WO2006115198A1 - 多孔質セルロース凝集体及びその成型体組成物 - Google Patents
多孔質セルロース凝集体及びその成型体組成物 Download PDFInfo
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- WO2006115198A1 WO2006115198A1 PCT/JP2006/308414 JP2006308414W WO2006115198A1 WO 2006115198 A1 WO2006115198 A1 WO 2006115198A1 JP 2006308414 W JP2006308414 W JP 2006308414W WO 2006115198 A1 WO2006115198 A1 WO 2006115198A1
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- cellulose
- porous
- particles
- aggregate
- dispersion
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
- A23L29/206—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of vegetable origin
- A23L29/262—Cellulose; Derivatives thereof, e.g. ethers
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P10/00—Shaping or working of foodstuffs characterised by the products
- A23P10/20—Agglomerating; Granulating; Tabletting
- A23P10/28—Tabletting; Making food bars by compression of a dry powdered mixture
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2013—Organic compounds, e.g. phospholipids, fats
- A61K9/2018—Sugars, or sugar alcohols, e.g. lactose, mannitol; Derivatives thereof, e.g. polysorbates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/205—Polysaccharides, e.g. alginate, gums; Cyclodextrin
- A61K9/2059—Starch, including chemically or physically modified derivatives; Amylose; Amylopectin; Dextrin
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/205—Polysaccharides, e.g. alginate, gums; Cyclodextrin
- A61K9/2054—Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/05—Elimination by evaporation or heat degradation of a liquid phase
- C08J2201/0504—Elimination by evaporation or heat degradation of a liquid phase the liquid phase being aqueous
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
Definitions
- the present invention relates to a moldability useful mainly as an excipient in the chemical industry, particularly in medicine and food.
- the present invention relates to a porous cellulose aggregate excellent in fluidity and a molded body composition thereof.
- Patent Document 1 has a secondary aggregate structure of the primary cellulose particles formed by agglomerating a particle pore volume within 0. 265cm 3 Zg ⁇ 2. 625cm 3 Zg , containing type I crystals Porous cellulose with an average particle size of more than 30 / zm and less than 250 / zm, a specific surface area of 1.3-20m 2 Zg, an angle of repose of 25 ° to less than 44 °, and a property of disintegrating in water
- An aggregate (corresponding to Comparative Examples 15 to 17), two or more types of cellulose primary particles having different average particle sizes, and a liquid medium, and the average particle size of the cellulose dispersed particles is 1 to: L 10 / zm
- a method for producing the above-mentioned porous cellulose aggregate comprising a step of drying a certain dispersion is described.
- porous cellulose aggregate of the patent document requires two or more types of cellulose primary particle groups having different average particle diameters, as described in the examples of the patent document, a commercial sales pulp is used. It was necessary to mix and treat the separate cellulose primary particles prepared in two steps, such as pulverizing the dried acid-insoluble residue.
- the porous cellulose particles of the present invention have the advantage that they can be obtained in a single step without going through a step such as pulverization.
- the porous cellulose aggregate of the present invention has an average width and an average thickness within a specific range, and is easy to bend the cellulose primary particles, so that the size of the major axis of the cellulose primary particles is not limited.
- Rulose particles have a secondary aggregate structure with a pore size smaller than that of the porous cellulose aggregate of the present invention, and have a low degree of swelling in water. Therefore, even in the case of poorly soluble drugs or water-soluble drugs, In order to avoid tableting troubles, such as magnesium stearate, it is necessary to add a water-repellent additive such as magnesium stearate. There was a case.
- the porous cellulose aggregate of Patent Document 1 is a mixture of two or more types of cellulose particles having different average particle diameters, and when the cellulose dispersion is dried, the cellulose dispersed particle groups having a small average particle diameter are average particles. It is described that by entering between cellulose dispersed particle components having a large diameter, excessive aggregation of cell-dispersed particles having a large average particle diameter is suppressed and a large pore volume is imparted in the secondary aggregate structure. Yes.
- the porous cellulose aggregate of the present invention uses single cellulose primary particles, it is not as densely aggregated as the porous cellulose aggregate of the patent document and has a pore diameter of at least 3 m. Is different.
- a clear peak can be identified in the range of 0.1 to 10 m in the patent document, and the central pore diameter, which is the peak top of the pore distribution, is effective for water permeability into the particles.
- the porous cellulose aggregate of the present invention is a separate cellulose primary product prepared in two steps from a large porous cellulose aggregate having a median pore diameter of 3 m or more, which was not obtained by the production method of the patent document. It has the advantage that it can be prepared in a single step without the need to mix particles.
- cellulose particles are mixed with a third component such as a crystalline substance that is insoluble or hardly soluble in water and soluble in an organic solvent, and this is mixed with water or an aqueous solution of a water-soluble organic solvent. After granulation and drying, the crystal component is obtained by extracting and removing the third component with an organic solvent. Pore diameter is 0.1 ⁇ m or more and porosity is 20% or more. And porous cellulose particles (corresponding to Comparative Example 6 of the present application) having a fraction of 350 mesh or more and 90% by weight or more.
- the porous cellulose particles described in the literature have a cellulose-like dense and strong cellulose wall structure in which the cellulose primary particles are uniformly continuous so that the boundaries between the particles are unclear.
- the particle structure is completely different from that of porous cellulose aggregates.
- the cellulose particles of Patent Document 2 are excellent in fluidity, water does not easily permeate into a dense and continuous cellulose wall, so that they do not disintegrate in water and may impede the rapid release of active ingredients.
- the cellulose particles of Patent Document 2 have insufficient moldability, which is poor in plastic deformability when cellulose is compressed, and further, such as crystalline substances that are soluble in organic solvents and organic solvents in the manufacturing process. Since the third component is used, not only the production cost increases, but the active component may be deactivated, which is insufficient for stable use as an excipient.
- Patent Document 3 fine natural cellulose dispersed in an organic solvent is granulated and dried by a spray drying method, the crystal form is type I, the specific surface area is 20 m 2 / g or more, Porous microcellulose particles having a porous structure with a diameter of 0.01 m or more and a pore volume of 0.3 cm 3 Zg or more and an average particle size of at most 100 ⁇ m (corresponding to Comparative Example 7 of the present application)
- the micro cellulose particles also have the above cellulose wall structure, and the particle structure is completely different from the porous cellulose aggregate of the present invention. Further, the cellulose particles of Patent Document 3 have a large pore volume per se, and the particle structure is different from that of the porous cellulose aggregate of the present invention. There is a problem.
- porous cellulose aggregate particles use an organic solvent in the production process, not only the production cost is increased, but also the specific surface area is too large, which promotes the interaction between the active ingredient and moisture. In some cases, the active ingredient may be deactivated, which is insufficient for stable use as an excipient.
- Patent Document 4 as a cellulose powder having good moldability and disintegration, the average degree of polymerization is 150 to 375, it is pleasing it bulk force S i .84 to 8.92 cm 3 / g, particle size force 300 m
- the following senorelose powder (corresponding to Comparative Example 8 of the present application) is described.
- Patent Document 5 as a cellulose powder having good fluidity and disintegration, the average degree of polymerization is 60 to 375, the apparent specific volume is 1.6 to 3. lcm 3 Zg, and the apparent tapping specific volume is 1.4 cmV.
- a microcrystalline cellulose aggregate (corresponding to Comparative Example 9 of the present application) having an angle of repose of 35 to 42 ° and a component of 200 mesh or more of 2 to 80% by weight.
- the cellulose powder obtained by the examples described in these patent documents is intentionally formed as in the present invention having a small intraparticle pore volume. It is completely different from the pore structure.
- these cellulose powders have a small specific surface area of 0.6 to 1.2 m 3 / g and low compression moldability.
- the apparent specific volume is adjusted to control the formability, fluidity and disintegration of cellulose particles.
- the apparent specific volume is 2.0 to 2.9 cm 3 Zg. In a relatively small range, the fluidity and disintegration are excellent, but the moldability is not satisfactory. On the other hand, if the apparent specific volume is slightly increased to 3.0 to 3.2 cm 3 Zg, the moldability is excellent. There was a problem that fluidity and disintegration deteriorated.
- Patent Document 6 as cellulose powder having good moldability, an average particle size of at most 30
- j8-1, 4-glucan powder (corresponding to Comparative Example 1 of the present application) having a specific surface area of 1.3 m 2 Zg is described.
- the j8-1, 4-glucan powder described in this document does not have a secondary aggregation structure, and individual primary particles exist alone. Although this glucan powder has good moldability, it has a problem that it is inferior in disintegration and has a small average particle diameter, so that it has poor fluidity.
- Patent Document 7 has good moldability and disintegration, and has an average degree of polymerization of 100 to 375 obtained by hydrolyzing a cellulosic substance as cellulose powder, an acetic acid retention rate of 280% or more, and Kawakita.
- a value force SO. 85 to 0.90, b value force 0.05 to 0.10 in the formula (P'V0 / (V0—V) l / a'b + P / a), apparent specific volume 4.0 to 6.
- cellulose powder corresponding to Comparative Example 10 of the present application having substantially no particles of 355 m or more and an average particle diameter of 30 to 120 m.
- the cellulose powder obtained by the method of the example described in this document is also intentionally formed as in the present invention because the pore volume in the particles is small according to the result of pore distribution measurement using mercury porosimetry. It is completely different from the pore structure.
- Patent Document 7 is excellent in compression moldability and disintegration, when the angle of repose is measured with respect to an example that is specifically disclosed and has the best balance, it exceeds 55 °.
- the formulation that contains many active ingredients with poor fluidity, which is not fully satisfactory, has a problem that the coefficient of variation of the tablet weight increases and affects the uniformity of drug content.
- the cellulose powder of the literature can impart high hardness when molded under high pressure, but the water penetration into the particles formed by the intentionally formed intraparticle pores is low. There was a problem when the collapse was delayed!
- Patent Document 8 the moldability, fluidity and disintegration are good, and particles remaining as a cellulose powder on a 38 ⁇ m sieve after passing through a 75 ⁇ m sieve with an average polymerization degree of 00 to 375 are shown.
- Crystalline cellulose (corresponding to Comparative Example 11 of the present application) characterized in that it is 70% or more of the total weight and the average value of the major axis / minor axis ratio of the particles is 2.0 or more.
- Patent Document 9 discloses that the average LZD (major axis Z minor axis ratio) of particles having an average degree of polymerization power of 50 to 450 and 75 m or less as a cellulose powder having good moldability, disintegration property and fluidity is 2.0. -4.5, cellulose having an average particle size of 20-250 111, an apparent specific volume of 4.0-7.0 cm3 / g, an angle of repose of 54 ° or less, and a specific surface area of 0.5-4 m 2 Zg There is a description of powder (corresponding to Comparative Examples 2 to 4 of the present application).
- the cellulose powder described in these publications is completely different from the pore structure intentionally formed as in the present invention because the pore volume in the particles measured by silver porosimetry is small.
- the cellulose powders described in these publications have a long and slender shape that gives the molded body a high hardness by making the shape of the particles slender. Therefore, the apparent specific volume is increased and the moldability is increased. The higher the value, the lower the fluidity. In the cellulose powders of the examples described in these publications, when the repose angle is measured for the best fluidity, the angle of repose is 44 °.
- the formulation contains many active ingredients and is continuously molded at a high speed, the coefficient of variation of the tablet weight increases and affects the uniformity of drug content, which is not satisfactory in terms of fluidity. It was. Furthermore, the cellulose powders described in these publications can impart high hardness when molded under high pressure, but have low water permeability into the particles formed by the intentionally formed intraparticle pores. Therefore, there was a problem that the collapse was delayed.
- Patent Document 10 discloses that an average degree of polymerization is 150 to 450, an average particle size is 30 to 250 ⁇ m, an apparent specific volume is more than 7 cm 3 / g, and a polyethylene glycol retention rate of a molecular weight of 400 is 190%.
- the cellulose powder described in this document does not have a secondary agglomeration structure, and the cellulose primary particles exist substantially alone.
- the pore volume in the particles measured by mercury porosimetry is small and completely different from the pore structure intentionally formed as in the present invention.
- the apparent specific volume is large, the fluidity is greatly degraded.
- the repose angle of the best fluidity of this document is 50 °.
- it contains many active ingredients with poor fluidity.
- the coefficient of variation of the tablet weight increases and affects the uniformity of the content of the drug.
- the cellulose powder of this document can impart high hardness when molded under high pressure, it does not disintegrate due to its low water permeability into the particles formed by the intentionally formed intraparticle pores. There was a problem with delay!
- the average particle size of the cellulose dispersed particles existing in the cellulose dispersion must be 50 ⁇ m or more.
- the average particle size of the cellulose dispersed particles of the present invention is 10 m. This is obtained at less than 50 m, and the manufacturing method is also clearly different.
- the apparent specific volume is in the range of 2.3 to 6.4 cm 3 Zg.
- the apparent ratio is In the range where the volume exceeds 7 cm 3 / g, sufficient moldability was obtained, but there was a problem that fluidity and disintegration were poor.
- Patent Document 11 describes pharmaceutically containing 10 to 70% crystalline cellulose having an average degree of polymerization of 60 to 375 as cellulose particles having good fluidity and 10 to 90% of a water-soluble additive. Inactive spherical nuclei are described.
- Patent Document 12 a powder containing 50% or more of crystalline cellulose is mixed with a mixing and agitation granulator while adding distilled water and kneaded to have a water absorption capacity of 0.5 to 1.5 mlZg, true sphere.
- compositionspherical nucleus containing at least 50% crystalline cellulose having a degree of 0.7 or more, a tapping apparent specific volume of 0.65 gZml or more, a friability of 1% or less, and an average degree of polymerization of 60 to 375 (Corresponding to Comparative Example 12 of the present application).
- hydrolyzed cellulose particles are mechanically reduced in particle size and have a dry density of at least 0.4 gZcm 3 (2.5 cmVg in apparent specific volume) when spray dried.
- Microcrystalline cellulose particles having a smooth surface with a spherical shape and an average particle diameter of 2 to 35 m are described.
- Patent Document 14 a cellulosic material is hydrolyzed to an average degree of polymerization of 60 to 350, then mechanically ground to an average particle size of 15 m, and the resulting dispersion containing crystalline cellulose is obtained.
- 10% or more of crystalline cellulose having an average degree of polymerization of 60 to 350 which can be dried in the form of droplets, with an apparent specific volume of tapping of 0.60-0.95 gZmL and a sphericity of 0.
- Cellulose particles (corresponding to Comparative Example 13 of the present application) having a shape factor of 1.10-1.50 and an average particle diameter of 10 to 400 ⁇ m are described.
- the cellulose particles described in these documents do not have a secondary aggregate structure, and the cellulose particles obtained by the methods of Examples described in these patent documents have an apparent specific volume of 2. Although it is 5cm 3 Zg or less and has a shape close to a sphere and excellent fluidity, it is inferior in compression moldability, and a molded body having practically sufficient hardness cannot be obtained at a compression pressure of 10 to 20 MPa.
- the cellulose particles described in No. 10 have an apparent specific volume that is too high. In particular, when compression molding is performed at a high speed, the cellulose particles may not be practically used in terms of fluidity and disintegration.
- these cellulose particles do not have intentionally formed intraparticle pores, and the intraparticle pore volume is small, so that the active component can hardly be supported in the particles.
- the elution of the active ingredient is slow and cannot be put to practical use unless it undergoes complicated steps such as granulation once with water or an organic solvent and drying.
- the active ingredient is recrystallized during storage, which has the disadvantage that the commercial value is impaired.
- the active ingredient in a solid preparation for internal use elutes from the preparation into the body fluid in the digestive tract, is absorbed from the digestive tract, enters the systemic blood, and exhibits its medicinal effects.
- Active ingredients that are sparingly soluble in water have low solubility, so that all of the administered active ingredient may be excreted before it elutes and may not exhibit sufficient medicinal effects.
- the ratio of the amount of all active ingredients that enter the systemic circulation to the amount of active ingredient administered is generally known as bioavailability.To improve this bioavailability and to improve the active ingredient, Various methods have been investigated for improving the dissolution of hardly soluble active ingredients.
- Patent Document 15 describes a method of co-grinding a water-insoluble active ingredient with j8-1,4-glucan powder. In this method, it is necessary to pulverize for a long time until the crystallinity of the j8-1,4-glucan powder disappears, and it is necessary to continue a strong shear for a long time with a roll mixer. There was a problem with inefficiency. In addition, ⁇ 8-1,4-glucan, which has lost crystallinity, has a problem of low compression moldability.
- Patent Document 16 when a poorly water-soluble active ingredient is used as a solid preparation for oral administration by a direct compression method, ⁇ -1,4-glucan, a disintegrant and a surfactant are added to increase strength. It describes a method that eliminates the variation in the content of the active ingredient and increases the disintegration rate of the tablet and the dissolution rate of the active ingredient.
- a surfactant it is necessary to add a surfactant to promote the elution of the poorly water-soluble active ingredient.
- the solid preparation is taken, it is digested by the surfactant. The challenge was to cause inflammation in the ductal mucosa.
- Patent Document 17 describes that tablets are prepared by a wet-pulling method using powdery water mixing, kneading, granulation, and drying steps using a poorly water-soluble main ingredient and
- a water-soluble polymer solution it is described that by adding a water-soluble polymer solution, a tablet having a high tablet hardness and a high dissolution rate of the active ingredient with a high disintegration time is described.
- This document also does not describe porous cellulose particles with large pores in the particles, and it is completely unknown to improve the water solubility of drugs by blending poorly water-soluble active ingredients and porous cellulose aggregates. won.
- many steps related to drying are essential, and the associated equipment cost and the energy cost used for drying are high.
- Patent Document 18 discloses a porous structure having a specific specific surface area and pore volume, which is obtained by granulating and drying particulate natural cellulose dispersed in an organic solvent by a spray dry method. A method of improving the elution of a drug by mixing a poorly soluble drug with the cellulose particles and adsorbing the cellulose particles by sublimation is described. Since the porous cell-particles described in this document have a high specific surface area and a large intra-particle pore volume, elution is improved when a poorly water-soluble active ingredient is adsorbed.
- cellulose particles having an excessively high specific surface area are used, and the active ingredient adsorbed on the surface thereof is amorphous. Active ingredients that are difficult to disintegrate due to storage stability problems such as partial crystallization during storage and changes in dissolution rate, and molded compositions such as tablets that are firmly bound. There was a disadvantage that the elution of was slow.
- the sublimable active ingredient has a problem of extruding the solid preparation force during storage, and in order to prevent this, many of these solid preparations have been subjected to film coating or sugar coating.
- the active ingredient in the formulation may vary by passing through the film layer and leaching out of the formulation, or it may adhere to the surface of the formulation, resulting in irritation when taking the drug.
- the commercial value was remarkably lowered by giving off an odor or recrystallization in a storage container such as a bottle. Further, in the case of a preparation without coating, sublimation recrystallization becomes more prominent than when coating is applied.
- Patent Document 19 as a method for preventing recrystallization due to sublimation of ibuprofen in the solid preparation, a group comprising ibuprofen-containing solid preparation, polyvinylpyrrolidone, acid magnesium and sodium hydrogen carbonate is used. Describes a method for storing one or more stable substances in a closed container such as a bottle. According to the powerful method, crystal adhesion to the sealed container during preparation storage and the irritating odor of the preparation are improved, but polyvinylpyrrolidone, magnesium oxide, sodium carbonate, etc. are put in separate containers in the container. Since the process is complicated, the sublimation is prevented by adding porous cellulose in the preparation such as the sublimable active ingredient-containing preparation of the present invention to form a single preparation. Is completely different.
- a composition containing an active ingredient that is oily, liquid, or semisolid at room temperature has a liquid component that oozes out from the preparation when it is compression-molded as compared to a solid active ingredient.
- problems such as tableting damage, liquid spots on the surface of the obtained preparation, and poor fluidity in the case of a granular preparation. Improvement of these problems is an extremely important issue because they cause variations in active ingredient concentration and drug efficacy that cannot be achieved by force that significantly reduces product quality.
- Patent Documents 20 to 31 in the manufacture of tablets, a liquid 'semi-solid active ingredient is held on an adsorption carrier as it is at room temperature, or the active ingredient is water, an organic solvent, an oil or fat, a water-soluble polymer, A method is described in which a solution dissolved, emulsified and suspended in a surfactant is retained, and then a dry powder or granule obtained is compression molded through a drying step.
- liquid or semi-solid active ingredients are leached out at room temperature at the time of compression, causing tableting troubles, and sufficient compression molding cannot be obtained. was there.
- Patent Document 1 International Publication No. 2005Z073286 Pamphlet
- Patent Document 2 Japanese Patent Application Laid-Open No. 1-272643
- Patent Document 3 Japanese Patent Laid-Open No. 2-84401
- Patent Document 4 Japanese Patent Publication No. 40-26274 (CA 699100 A)
- Patent Document 5 Japanese Patent Laid-Open No. 53-127553 (US4159345 A)
- Patent Document 6 Japanese Patent Laid-Open No. 63-267731
- Patent Document 7 JP-A-6-316535 (US5574150)
- Patent Document 8 JP-A-11-152233
- Patent Document 9 International Publication No. 02Z02643 Pamphlet (US20040053887 A1)
- Patent Document 10 International Publication No. 2004Z106416 Pamphlet (EP1634908)
- Patent Document 11 Japanese Patent Laid-Open No. 4 283520
- Patent Document 12 Japanese Patent Laid-Open No. 7-173050 (US5505983, US5384130)
- Patent Document 13 Japanese Patent Publication No. 7-507692 (US5976600 A)
- Patent Document 14 International Publication No. 02Z36168 Pamphlet HUS20040043964 A1
- Patent Document 15 Japanese Patent Publication No. 53-22138 (US4036990 A)
- Patent Document 16 Japanese Patent Laid-Open No. 53-044617
- Patent Document 17 Japanese Patent Laid-Open No. 54-052718
- Patent Document 18 Japanese Patent Laid-Open No. 03-264537
- Patent Document 19 Japanese Patent Application Laid-Open No. 08-193027
- Patent Document 20 Japanese Patent Laid-Open No. 56-7713
- Patent Document 21 Japanese Patent Application Laid-Open No. 60-25919
- Patent Document 22 Japanese Patent Laid-Open No. 61-207341
- Patent Document 23 Japanese Patent Laid-Open No. 11-193229 (EP972513 B1)
- Patent Document 24 Japanese Patent Laid-Open No. 11-35487
- Patent Document 25 Japanese Unexamined Patent Publication No. 2000--16934
- Patent Document 26 JP 2000-247247 A
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- Patent Document 28 Japanese Patent Laid-Open No. 2001-316316
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- Patent Document 31 Japanese Patent Laid-Open No. 2003-55219
- the present invention provides excellent moldability, fluidity, and disintegration used in the production of molded articles containing various active ingredients by making cellulose particles into porous cellulose aggregates having a specific pore volume. It is an object of the present invention to provide an excipient having properties.
- the present inventors have controlled the particle structure of the cellulose aggregate to develop a secondary aggregate structure, thereby increasing the pore volume in the particle of the cellulose aggregate, and the cellulose aggregate.
- the present invention was achieved by controlling the powder physical properties within a specific range. That is, the present invention is as follows.
- (1) has a secondary aggregate structure primary cellulose particles formed by agglomerating, pore volume within a particle is 0. 265cm 3 Zg ⁇ 2. 625cm 3 is Zg, containing type I crystals, the average Particle size greater than m and 250 m or less, specific surface area of 0.1 lm 2 Zg or more and less than 20 m 2 Zg, repose angle 25 ° or more and less than 44 °, swelling degree 5% or more, and disintegration in water
- the porous cellulose aggregate according to any one of (1) to (3) which can be obtained by a production method including a step of obtaining a cellulose dispersion and a step of drying the obtained cellulose dispersion. Collection,
- cellulose dispersion is a cellulose dispersion in which particles that do not settle under a centrifugal separation condition with a centrifugal force of 4900 mZs 2 are 10% by weight or less
- the natural cellulosic material is subjected to shearing or stirring in the process of mechanical treatment such as grinding and grinding, chemical treatment such as hydrolysis, or a combination of both, or these treatments.
- mechanical treatment such as grinding and grinding
- chemical treatment such as hydrolysis, or a combination of both, or these treatments.
- the natural cellulosic material is wood pulp having a level-off polymerization degree of 130 to 250, a whiteness of 90 to 99%, S power to 20%, and S power ⁇ to 10%.
- the natural cellulosic material strength is a wood pulp having a level-off polymerization degree of 130 to 250, a whiteness of 90 to 99%, S power to 20%, and S power ⁇ to 10%. Quality
- a method for producing a roulose aggregate A method for producing a roulose aggregate
- a method for producing a roulose aggregate A method for producing a roulose aggregate
- a method for producing a roulose aggregate A method for producing a roulose aggregate
- the natural cellulosic material strength is a wood pulp according to (9), which is a wood pulp having a level-off polymerization degree of 130 to 250, whiteness of 90 to 99%, S force to 20%, S force ⁇ to 10%. Quality
- a method for producing a roulose aggregate A method for producing a roulose aggregate
- the natural cellulosic material strength is a wood pulp according to (10), which is a wood pulp having a level-off polymerization degree of 130 to 250, whiteness of 90 to 99%, S force to 20%, S force ⁇ to 10%. Quality
- a method for producing a cellulose aggregate A method for producing a cellulose aggregate
- a method for producing a cellulose aggregate (22) The porous material according to (12), wherein the natural cellulosic material is a wood pulp having a level-off polymerization degree of 130 to 250, a whiteness of 90 to 99%, S force to 20%, and S force ⁇ to 10%. quality
- a method for producing a cellulose aggregate A method for producing a cellulose aggregate
- a method for producing a cellulose aggregate A method for producing a cellulose aggregate
- a molded body composition comprising one or more active ingredients and the porous cellulose aggregate according to any one of (1) to (3),
- a molded article composition comprising one or more active ingredients, and a porous cellulose aggregate obtainable by the method according to (6),
- a molded article composition comprising one or more active ingredients, and a porous cellulose aggregate obtainable by the method according to (7),
- a molded body composition comprising one or more active ingredients and a porous cellulose aggregate obtainable by the method according to any one of (8) to (10),
- a molded article composition comprising one or more active ingredients, and a porous cellulose aggregate obtainable by the method according to (11),
- a molded article composition comprising one or more active ingredients, and a porous cellulose aggregate obtainable by the method according to (12),
- a molded article composition comprising one or more active ingredients, and a porous cellulose aggregate obtainable by the method according to (13),
- the porous cellulose aggregate of the present invention is extremely excellent in moldability, fluidity and disintegration! /
- the porous cellulose aggregate of the present invention is used.
- it When used as an excipient, it has excellent mixing uniformity with the active ingredient, excellent content uniformity of the active ingredient that does not vary in weight, sufficient hardness, and friability that prevents tableting problems.
- a molded article having excellent low disintegration property can be provided by a simple method.
- the porous cellulose aggregate of the present invention is a solid preparation containing a poorly water-soluble active ingredient, the dissolution, tableting and disintegrating properties of the active ingredient are extremely good. It is particularly useful in the use of other excipients.
- the porous cellulose aggregate of the present invention in a solid preparation containing a liquid or semi-solid active ingredient, prevents the liquid or semi-solid active component from leaching, and has good disintegration. It is particularly useful in the use of excipients for solid formulations.
- the porous cellulose aggregate of the present invention is a mixture of an active ingredient and a component other than the active ingredient when the active ingredient is in a very small amount, particularly when the average particle size of the active ingredient is small and the adhesion cohesiveness is high.
- This is particularly useful in the use of excipients for solid preparations, because it can contribute to the reduction of mixing speed and concentration variation of active ingredients in solid preparations with improved tableting and disintegration properties. is there.
- the porous cellulose aggregate of the present invention can prevent recrystallization due to sublimation of a sublimable active ingredient in a solid preparation of a sublimable active ingredient, and prevent a decrease in commercial value. It is particularly useful in the use of excipients for solid formulations.
- the porous cellulose aggregate of the present invention needs to have a secondary aggregate structure in which primary particles are aggregated.
- This is a secondary aggregate structure where the boundary of primary particles is clear when the particle surface is observed at 250x or 1500x with a scanning electron microscope (SEM).
- SEM scanning electron microscope
- the secondary aggregate structure formed by agglomerating primary particles is closely related to the disintegration property. If this particle structure is not used, the disintegration property is deteriorated.
- the boundaries of primary particles are clear For example, in the case of having a film-like dense and continuous cellulose partition wall, the cellulose primary particles are densely continuous and firmly bonded, so the particles do not disintegrate in water and the disintegration of the molded product also deteriorates. Preferred,
- the secondary aggregation structure formed by aggregation of primary particles is closely related not only to the disintegration property but also to the elution property of the active ingredient.
- Porous cellulose particles with a secondary agglomeration structure formed by agglomeration of primary particles are promoted to disintegrate into primary particles in water where the water permeates quickly between primary particles and retains the active ingredient. Since the contact area between the active ingredient and water increases, it has the effect of improving the elution property of the active ingredient that is hardly soluble in water.
- This secondary agglomeration structure is uniformly distributed regardless of the inner surface of the particle, and when mixed with the active ingredient, the active ingredient is also retained in the cellulose primary particle gap. In particular, the liquid component can be prevented from being leached out.
- this secondary agglomeration structure can hold active ingredients not only on the particle surface but also inside, contributing to improved mixing speed and uniformity of active ingredients, and greatly reducing concentration variations. I like it because I can.
- the porous cellulose aggregate of the present invention has a pore volume within a particle is required to be 0. 265cm 3 Zg ⁇ 2. 625cm 3 Zg .
- Porous particles having a large pore volume in the particles are excellent in plastic deformability, and are excellent in moldability because the particles are easily crushed during compression.
- the porous cellulose aggregates of the present invention are those in which the pore volume in the aggregated particles is intentionally increased in addition to those derived from the original cellulose. It has improved deformability. For this reason, high compression moldability is exhibited regardless of the apparent specific volume of the particles.
- the pore volume force within the particle is less than 0.265 cm 3 Zg, it is formed by the intrinsic pores of the cellulose primary particles, or by the agglomeration of the cell source naturally, not intentionally formed. In addition, since the pores inside the particles are not cautious, the plastic deformability is poor. In order to increase the moldability, the apparent specific volume of the particles must be increased, resulting in poor fluidity of the particles.
- the porous cellulose aggregate of the present invention can ensure good moldability with its relatively small apparent specific volume, and as a result, has excellent fluidity.
- the particle has a sufficient pore volume. Therefore, the active component taken into the pores in the particles or on the surface of the particles during the mixing process or compression process is difficult to desorb, so that a sufficient amount of liquid components can be retained in the pores in the particles, so that
- a solid active ingredient that is preferred because it is excellent in prevention, it is possible to maintain a uniform and large amount of finely pulverized active ingredient for the purpose of improving water dispersibility and solubility, and It is particularly preferable because it can prevent recrystallization during storage, and contribute to stabilization and prevention of deterioration of commercial value.It also contributes to improving the mixing speed and mixing uniformity of active ingredients. This is preferable because it can greatly reduce variation.
- the use of a slightly water-soluble active ingredient dissolved and suspended or emulsified is also preferred because of its excellent liquid component retention.
- the drug concentration coefficient of variation which is an indicator of variation in the concentration of the active ingredient, preferably does not exceed 3.0% during the mixing time, more preferably 2.0% or less, particularly preferably 1.5% or less. It is. Particularly when an active ingredient having an average particle size of 10 / zm or less and an extremely high aggregation property is mixed, the pore volume in the particle is not less than 0.25 cm 3 Zg as in the case of the porous cellulose aggregate of the present invention. It is preferable that the active ingredient is retained not only on the surface of the particles but also in the interior, so that the drug concentration variation coefficient can be reduced to 2.0% or less.
- the pore volume in the particles is less than 0.265 cm 3 Zg, the dispersion uniformity and retention of the solid active ingredient and liquid active ingredient are impaired, so that the concentration of the active ingredient varies and the solid preparation aggregates. Resulting in loss of compression moldability, sublimable active ingredients are recrystallized during storage, and the above effects cannot be obtained, such as reduced stability and commercial value. Although it is good, there is a limit to the pore volume that the particles can have, which is at most about 2.625 cm 3 Zg.
- the larger the pore volume in the particle the more the moldability is improved by imparting plastic deformability to the particle, the active ingredient is taken in, the elution is improved, and the pulverized active ingredient can be retained more. It is preferable in terms of preventing recrystallization of the sublimable component, improving the mixing speed of the active component, improving the mixing uniformity, and retaining the liquid component. If the pore volume becomes too large, the apparent specific volume tends to increase and the fluidity tends to decrease.Therefore, the preferred and range of the pore volume within the particle that can provide a good balance between moldability and fluidity is 0. 265 cmVg ⁇ l. 500 cm 3 Zg, particularly preferably 0.265 cmVg ⁇ l.
- the pore size distribution of the porous cellulose aggregate of the present invention is measured, for example, by mercury porosimetry.
- it is preferable that “clear peaks” can be identified in the range of 0.1 to LO / z m.
- the median pore diameter which is the peak top of the pore distribution, is closely related to the permeability of water into the particles, and the median pore diameter is preferably 0 or more.
- the central pore diameter is preferably as large as possible. Repulsive force is in the range of 10 to 15 m at most.
- the packing between the particles becomes too good, and a large fine particle of 3 ⁇ m or more is substantially obtained. It was difficult to obtain the pore size.
- the balance between moldability and disintegration is particularly excellent, and the median pore diameter is preferably 3 to 15 / ⁇ ⁇ , more preferably 3 to LO / z m.
- the crystalline form of the porous cellulose aggregate of the present invention must be type I.
- Known crystal forms of cellulose include type I, type II, type III, and type IV.
- type I is called “natural cellulose”
- type II is called “regenerated cellulose” and is widely used.
- the type III and type IV can be obtained on the laboratory scale, but they are widely used on the industrial scale.
- Natural cellulose has been used for food as vegetable fiber since ancient times, and is now widely used as a dispersion stabilizer for liquid foods and as a pharmaceutical excipient.
- regenerated cellulose is obtained by removing chemical products and solvents such as carbon disulfide and sodium hydroxide, regenerating and changing the crystal structure, and is partly wet and used as a food shape-retaining agent.
- Regenerated cellulose with a crystal form of type II changes its crystal form from that of natural cellulose with a crystal form strength, which makes the particles stiff, reduces plastic deformation during compression, and gives the molded body sufficient hardness.
- the porous cellulose aggregate of the present invention has an average particle size of more than 30 ⁇ m and 250 ⁇ m. Must be: If the average particle size is 30 m or less, the cellulose particles agglomerate with each other, so when mixing with the active ingredient, the active ingredient dispersion of the resulting molded body that is difficult to disperse the active ingredient evenly becomes large. In addition, the weight variation of the molded product during continuous production tends to increase. On the other hand, if the average particle diameter exceeds 250 m, segregation and segregation are likely to occur when continuously compressing a prescription powder mixed with an active ingredient having poor fluidity.
- the specific surface area of the porous cellulose aggregate of the present invention should be not less than 0.1 lm 2 Zg and less than 20 m 2 Zg.
- the specific surface area is less than 0.1 lm 2 Zg, the compression moldability becomes low, and it is difficult to impart high hardness and low friability to the molded product.
- the specific surface area exceeds 20 m 2 Zg, when the active ingredient is blended with cellulose, the contact area between the cellulose and the active ingredient becomes excessively large, and the active ingredient is easily deactivated. Absent.
- the angle of repose of the porous cellulose aggregate of the present invention must be 25 ° or more and less than 44 °.
- the active ingredient is prepared so that it diffuses in the gastric juice or intestinal fluid medium when taken and can quickly increase the medicinal effect, and is often pulverized or originally finely pulverized. Since they are fine powders, they have poor fluidity.
- the angle of repose of the cellulose powder is 44 ° or more, when a large amount of active ingredients with poor fluidity are blended, it is not preferable from the viewpoint of fluidity of the mixed powder. ,. In particular, tens of thousands to hundreds of thousands of tablets tend to increase the weight variation of the molded product during high-speed tableting.
- the porous cellulose aggregate of the present invention needs to have a swelling degree of 5% or more. It is preferably 6 to 50%, particularly preferably 7 to 30%.
- the degree of swelling can be measured as follows. About 10 g of powder is slowly poured into a cylindrical container with a volume of 100 cm 3 (V), and about 50 cm 3 of pure water is added to the powder layer so that the powder is completely wetted. From the volume (V) after mixing and allowing to stand for 8 hours, use the following formula.
- the degree of swelling is determined by the cellulose concentration given when the primary cellulose particles are aggregated by drying. This is the gap between the next particles, and the larger the value, the more easily the water penetrates into the particles, and the more easily it collapses.
- those with improved moldability must have low swelling, and as a result, disintegration may not be sufficient, and those with improved fluidity have high swelling and disintegration. Although the moldability was good, it was difficult to keep the moldability at a high level.
- Patent Document 1 there is a porous cellulose aggregate described in Patent Document 1 that is most excellent in formability and disintegration.
- the power was 4%. It has not been achieved so far to improve the moldability while maintaining the disintegration property at a high level of swelling, and has been achieved for the first time by the present invention.
- the apparent specific volume of the porous cellulose aggregate of the present invention is preferably 2.0 to 6.0 cm 3 Zg. Since the porous cellulose aggregate of the present invention has a porous structure, it has hardness, fluidity, and disintegration in a well-balanced manner over almost the entire area of the apparent specific volume. In order to give high compression moldability, the apparent specific volume is preferably 2. Ocm 3 Zg or more, and in order to give high fluidity, the apparent specific volume is preferably 6.0 cm 3 Zg or less. Specially preferred ⁇ , 2.5 to 5.0 cm 3 / g.
- porous cellulose aggregate of the present invention 0.5 g of cellulose powder is weighed and placed in a mortar (manufactured by Kikusui Seisakusho, using material SUS2, 3), and a circular flat bowl having a diameter of 1.1 cm (Kikusui). Compressed until the pressure reaches 10MPa and 20MPa (made by Seisakusho, material SUS2, 3) (Aikoichi Engineering, using PCM-1A, compression speed is lcmZ) and kept at the target pressure for 10 seconds It is preferable that the hardness of the cylindrical molded body obtained in (1) is 60N or more and 165N or more, respectively.
- the hardness of lOMPa is less than 60N and the hardness power of 20MPa is less than 165N, the active ingredient is blended in a large amount, and the molded product made from tens of thousands to hundreds of thousands of tablets has low hardness. And tableting troubles such as cabbing are likely to occur. The higher the tablet hardness is, the better. However, the hardness of lOMPa is 160N at most, and the hardness force of 20N is 20N.
- the porous cellulose aggregate of the present invention is compressed until the pressure becomes lOMPa.
- the hardness of the molded product on the cylinder obtained by compressing until the hardness of the obtained molded product on the cylinder is 70 to 160N or 20MPa, and the repose angle is more than 36 ° and less than 44 °.
- the drug content is a high content of about 30% by weight or more
- the porous cellulose aggregate of the present invention is added in a small amount of about 1 to 30% by weight, sufficient moldability, friability, and disintegration are achieved.
- it is excellent because the physical properties required for the preparation such as uniformity of content can be imparted.
- the conventional cellulose powder has a high drug content of about 30% by weight or more, and even though it can suppress tableting troubles such as sticking and cabbing, it does not have sufficient fluidity. In terms of weight CV, content CV, etc., it was unsuccessful in practical use.
- the present invention is a remarkably improved flowability of a conventional cellulose powder, and has been made compatible at a high level in spite of the fact that the moldability and flowability are contradictory so far. It is excellent in terms.
- the porous cellulose aggregate of the present invention is molded on a cylinder obtained by compressing until the hardness of the molded article on a cylinder obtained by compressing until the pressure becomes lOMPa is 60-10 ON or 20 MPa.
- the drug content should be 30% by weight in a formulation that can contain about 30% by weight or more of excipients. It is particularly preferable in that it becomes possible for the first time to have a high content of about the above level.
- the moldability decreases when the angle of repose is decreased. Therefore, if cellulose powder is contained in an amount of about 30% by weight or more, and an attempt is made to increase the drug content, cellulose having good fluidity is obtained. Powders have insufficient moldability, and cellulose with good moldability has insufficient fluidity, making it difficult to formulate.
- the present invention significantly improves the fluidity of conventional cellulose powders in the above applications.
- the porous cellulose aggregate of the present invention is prepared by the method described above.
- the collapse time of the cylindrical molded body obtained under the condition of compressing to 20 MPa and holding at the target pressure for 10 seconds is preferably 75 seconds or less in terms of disintegration. Particularly preferably, it is 50 seconds or less. The shorter the decay time, the better.
- active ingredients are diffused in the gastric juice intestinal fluid medium when ingested and are prepared so as to quickly increase the medicinal effect. It is slow and does not absorb quickly in the gastrointestinal tract and tends to decrease its immediate effect.
- Compression moldability and disintegration are contradictory properties, and the porous cellulose aggregate of the present invention has these contradictory properties enhanced to an unprecedented level, and is preferably 1 OMPa.
- the hardness of the molded product on the cylinder obtained by compressing until it becomes 60 to 160 N, or the hardness of the molded product on the cylinder obtained by compressing until 20 MPa is 165 to 410 N, and the disintegration time is 75 seconds.
- the hardness of the molded article on a cylinder obtained by compressing until lOMPa is particularly preferably 60 to 160 N, or the hardness of the molded article on a cylinder obtained by compressing until 20 MPa is 165 to 410 N, and
- the decay time is less than 50 seconds.
- the porous cellulose aggregate of the present invention can have a larger central pore diameter. Therefore, when compared with the same hardness with a high degree of swelling, the disintegration time Has the advantage of being short!
- the porous cellulose aggregate of the present invention comprises 55 parts by weight of acetoaminophen (manufactured by API Corporation, powder type), light anhydrous kaiic acid (manufactured by Nippon Aerosil Co., Ltd., trade name, Aerosil 200).
- the molded body having a weight of 200 mg preferably has a hardness of 50 N or more, a friability of less than 1%, and no tableting trouble.
- the porous cellulose aggregate of the present invention has a prescription powder having a repose angle of 45 ° to 55 ° composed of a medicinal component and a component other than cellulose particles and having a poor flowability of 0.001 to 50% by weight.
- the repose angle of the final prescription powder constituting the molded product composition of the present invention is 25 ° to 45 °, and more than 50,000 tablets per hour.
- the tablet composition has a tablet hardness of 50N to 100N (compression pressure range 1 to LOkN) and tablet weight variation (CV value) of 2.0% or less.
- the angle of repose of all prescription powders is 45 ° or less
- the tablet hardness of the molding composition is 50 to: L0 0N
- tablet weight variation (CV value) is 1.5% or less, particularly preferably all
- the repose angle of the prescription powder is 42 ° or less
- the tablet hardness of the molding composition is 50 N to 100 N
- the tablet weight variation (CV value) is 1.0% or less (Examples 17 to 19 and Comparative Examples 80 to 91).
- the porous cellulose aggregate of the present invention has a good balance of moldability, fluidity, and disintegrability, the medicinal components in the composition, such as direct tableting, and the porous cell of the present invention.
- the flowability of other components other than mouth agglomerates is poor (the angle of repose is 45 ° to 55 °), and Z or the compression moldability of the component is poor, a large amount of porous cellulose agglomerates are blended
- the conventional cellulose powder and cellulose particles have a remarkable effect which is not obtained.
- the porous cell of the present invention Loose aggregates are at a high level not found in conventional cellulose powders and cellulose particles, and have an excellent balance of moldability, fluidity, and disintegration, so even if a large amount of porous cellulose aggregates are blended, fluidity deterioration will not occur. It does not occur but rather has the advantage of improving the fluidity.
- the term “mixed in a large amount” as used in the present invention means that 30 to 90% of the present porous cellulose aggregate is contained in the composition. Preferably it is 30 to 80%, particularly preferably 30 to 70%. Below, the manufacturing method of the cellulose powder of this invention is described.
- the porous cellulose aggregate of the present invention has, for example, an average particle diameter of cellulose primary particles of 10 ⁇ m or more and less than 50 ⁇ m, an average width of 2 to 30 ⁇ m, and an average thickness of 0.5 to 5 ⁇ m. It is necessary to obtain a dispersion containing a natural cellulosic material (hereinafter also referred to as a cellulose dispersion). It is preferable to make the primary particles of cellulose in such a shape because the entanglement of the primary cellulose particles in the drying process can be promoted.
- the present invention focuses on the shape of the cellulose primary particles.
- entanglement of particles can be promoted by controlling this within a specific range.
- the aggregated particles can be easily controlled to be spherical, and voids can be easily formed inside the aggregated particles, thereby enhancing the plastic deformability of the particles and making it easier to impart formability. This is possible for the first time.
- the porous cellulose aggregate of the present invention is produced by a production method including a step of drying the cellulose dispersion. can get.
- the natural cellulosic substance may be plant or animal, for example, wood, bamboo, straw, rice straw, cotton, ramie, bagasse, kenaf, beet, squirt, nocterelle cell mouth. It is a fibrous material derived from a natural product containing cellulose such as cellulose and has only to have a cellulose I type crystal structure.
- a raw material one kind of natural cellulosic substance among the above may be used, or a mixture of two or more kinds may be used. Further, it is preferably used in the form of refined pulp, but the pulp refining method is not particularly limited, and any pulp such as dissolving pulp, kraft pulp, NBKP pulp, etc. may be used.
- a Wood-derived pulp is preferred because of its high cellulose purity, easy availability, and high supply stability.
- a wood pulp having a level-off polymerization degree of 130 to 250, a whiteness of 90 to 99%, an S force of 20%, and an S force of 10% as measured by a copper ethylenediamine solution method is preferable.
- a level-off polymerization degree of less than 130 is not preferable because moldability is hardly exhibited.
- the degree of polymerization exceeds S250, it is not preferable because the average width and average thickness of the cellulose primary particles are difficult to control within a specific range.
- the whiteness is less than 90, the appearance of the porous cellulose aggregate is inferior, which is not preferable. Higher whiteness is preferable, but at most it is about 99% at most. If S and S are out of the above range, it is not preferable in terms of formability and yield. here
- the natural cellulosic material may or may not hydrolyze raw materials such as pulp.
- hydrolyzing either acid hydrolysis, alkaline oxidative decomposition, thermal moisture decomposition, steam explosion, or any other method may be used alone, or two or more may be used in combination. May be.
- water is preferable as the medium used when the solid content containing the natural cellulosic substance is then dispersed in an appropriate medium, but there is no particular limitation as long as it is industrially used.
- a mixture of water and an organic solvent may be used.
- the organic solvent include alcohols such as methanol, ethanol, isopropyl alcohol, butyl alcohol, 2-methylbutyl alcohol, and benzyl alcohol, hydrocarbons such as pentane, hexane, heptane, and cyclohexane, acetone, and ethylmethyl.
- Ketones such as ruketone
- organic solvents used in pharmaceuticals Preferred are those classified as solvents in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.). Water and organic solvents can be used alone or in combination of two or more. Once dispersed in one medium, the medium is removed and dispersed in a different medium. A little.
- the porous cellulose aggregate of the present invention is not particularly limited as long as the natural cellulosic material is a known method.
- the average particle size of cellulose primary particles is 10 ⁇ m or more but less than 50 ⁇ m, the average width is 2 to 30 m, and the average thickness is 0. It is necessary to prepare a cellulose dispersion having 5 to 5 / ⁇ ⁇ and a solid content of 5 to 40% by weight, and then to dry.
- the cellulose primary particles referred to in the present invention are fibers constituting a natural cellulosic material, or are subjected to mechanical treatment such as pulverization and grinding, or chemical treatment such as hydrolysis of the natural cellulosic material.
- mechanical treatment such as pulverization and grinding, or chemical treatment such as hydrolysis of the natural cellulosic material.
- it means a particle having a size in the range of 1 to 500 ⁇ m in which the fiber is divided and newly formed.
- Examples of a method for reducing the average particle diameter of cellulose primary particles to less than 50 ⁇ m include mechanical treatment such as pulverization and grinding, or cyclone.
- This is achieved by appropriately adjusting conditions that are generally known to affect the treatment, such as sieve opening, and for example, when chemical treatment such as acid hydrolysis is performed.
- This can be achieved by appropriately changing the conditions such as acid concentration and temperature at the time, or in addition to those conditions already known to affect the mechanical treatment and fractionation treatment. Is done.
- the method for setting the average width of the cellulose primary particles to 2 to 30 ⁇ m and the average thickness to 0.5 to 5 ⁇ m is particularly limited as long as it is a method of tearing cellulose primary particles mainly in the longitudinal direction.
- a treatment such as high-pressure homogenizer treatment, and mechanical treatment such as grinding or fractionation treatment, or a combination of both as appropriate.
- high-pressure homogenizer treatment the pressure range may be adjusted appropriately from 10 to 200 MPa, depending on the amount of treatment!
- a pulp having an average width of cellulose primary particles of ⁇ 30 ⁇ m and an average thickness of 0.5-5 ⁇ m may be selected and used.
- the cellulose dispersion is preferably 10% by weight or less of particles that do not settle under centrifugal conditions with a centrifugal force of 4900 mZs 2.
- the hydrolysis conditions are hydrolyzed. For example, a method of appropriately changing in a direction in which it is difficult to proceed, a method of removing fine particle components that are difficult to settle by fractionation from the hydrolysis residue or dispersion, or a method of combining both.
- Centrifugation conditions with a centrifugal force of 4900mZs 2 as used in the present invention are based on the centrifugal force calculation method defined in the following formula, taking into account the rotational radius (using the maximum radius) of the commercial centrifuge to be used. This means that the number of rotations is determined for each device, and the center is separated for 10 minutes in the range of 15 to 25 ° C under the condition of the number of rotations.
- inverter As sales equipment, it is an inverter 'multipurpose high-speed cooling centrifuge (model number 6930, manufactured by Kubota, Rapid uses acceleration and deceleration modes), RA —400 angle rotor (capacity: 50cm 3 , material: polypropylene copolymer, tube) Corner (Degree: 35 °, maximum radius: 10.5 cm, minimum radius 5.8 cm, rotation speed 4100 rpm) is preferably used.
- the average particle size of the primary cellulose particles is 10 ⁇ m or more and less than 50 ⁇ m, the average width is 2 to 30 ⁇ m, and the average thickness is 0.5 to 5 / ⁇ ⁇ (preferably, in addition to these, centrifugal Se force 4900mZs particles do not settle in centrifugal separation conditions of 2 to 10 wt% or less) to prepare a cellulose dispersion of the time of drying the cellulose dispersion has an average thickness and a specific average width cellulose Since primary particles tend to bend easily, entanglement with adjacent cellulose primary particles tends to occur, contributing to the formation of voids inside the aggregates when the aggregates of cellulose primary particles are formed.
- cellulose dispersion 10% by weight or less of the primary cellulose particles in the cellulose dispersion that do not settle under centrifugal conditions with a centrifugal force of 4900 mZs 2 can be used to enclose the voids formed in the aggregate. Buried Contributes to the formation of porous secondary aggregate structure having an Nag dry large pore volume even in the continued particles-out bow I after.
- the average particle size of the cellulose primary particles is 50 ⁇ m or more, even if the shape of the cellulose primary particles is in a specific range, the primary particles that are difficult to take a secondary aggregate structure are dried alone. Therefore, it is preferable in terms of the pore volume in the particles, and the apparent specific volume becomes too large, which is preferable in terms of fluidity.
- the average particle size of the cellulose primary particles is 10 ⁇ m or less, the interparticle bonding force becomes too strong when the particles take a secondary aggregate structure, which is not preferable in terms of disintegration.
- the average width of the cellulose primary particles exceeds 30 m, the cellulose primary particles are difficult to bend and the entanglement with the adjacent cellulose primary particles is lowered, which is not preferable in terms of pore volume in the particles. If the average width of the cellulose primary particles is less than 2 m, it is not preferable because it is densely aggregated and pores in the particles are not formed, and the moldability and disintegration properties are poor.
- the average thickness of the primary cellulose particles exceeds 5 ⁇ m, the primary cellulose particles are difficult to bend, and the entanglement with the adjacent primary cellulose particles decreases, which is not preferable in terms of pore volume in the particles.
- the lower the lower limit of the average thickness of the cell mouth primary particles the more likely the particles are entangled.
- it is preferable in terms of the pore volume in the particles it is at most about 0.5 m. If the width of the cellulose primary particles is less than 2 ⁇ m and the thickness is less than 0.5 ⁇ m, such fine particles are closely bonded and the pore volume in the particles is reduced, so that moldability and disintegration are reduced. Not good because it is inferior.
- the particle shape of the primary cellulose particles it is preferable to use those having an average value ratio (LZ D) of the major axis to the minor axis of 2.0 or more.
- LZ D average value ratio
- the cellulose dispersion referred to in the present invention is not particularly limited, but i) A method in which cellulose primary particles obtained by treating single or two or more natural cellulosic substances are used as a cellulose dispersion.
- Ii) A method in which the cellulose dispersion liquid in i) is divided and subjected to separate treatment, and then mixed to obtain a cellulose dispersion liquid.
- the cellulose dispersion liquid in i) or ii) is fractionated, After the treatment, it may be produced by any method of mixing to make a cellulose dispersion, or iv) mixing two or more types of separately prepared cellulose primary particles to make a cellulose dispersion. Economic viewpoint i) is particularly preferred.
- the treatment method applied here may be either wet or dry, and each of those obtained by wet may be mixed before drying, or each of those obtained by dry may be dried. Even if it mixes before, the thing obtained by the wet type or the dry type may be combined.
- Known methods and the like are not particularly limited, and examples include methods such as mechanical treatment of pulverization and grinding, centrifugation using a cyclone and a centrifuge, and classification such as classification using a sieve. It may be a combination of both methods.
- a mixing blade such as a portable mixer, a three-dimensional mixer, a side mixer, etc., which is a one-way rotating type, a multi-axis rotating type, a reciprocating reversing type, a vertical moving type, a rotating + vertical moving type, a pipe type, etc.
- a grinding method using a jet mixer, a jet mixer agitating method such as a line mixer, a grinding method using a high shear homogenizer, a high pressure homogenizer, an ultrasonic homogenizer, etc. You can use the grinding method.
- the pulverization methods include screen-type pulverization methods such as screen mills and hammer mills, blade-rotating screen-type pulverization methods such as flash mills, air-flow-type pulverization methods such as jet mills, and ball-type pulverization methods such as ball mills and vibration ball mills.
- the method, blade stirring type pulverization method, etc. may be misaligned.
- the aggregate of cellulose dispersed particles obtained by the above operation is preferably made into a dispersion having a concentration of 5 to 40% by weight before drying. When this concentration is less than 5% by weight, the average particle diameter of the obtained cell mouth particles becomes small and the self-fluidity tends to be impaired. On the other hand, if this concentration exceeds 40% by weight, the apparent specific volume of the cellulose particles becomes small and the compression moldability tends to be impaired.
- the amount is preferably 10 to 40% by weight, more preferably 15 to 40% by weight.
- the drying method is not particularly limited. For example, any one of freeze drying, spray drying, drum drying, shelf drying, airflow drying, and vacuum drying may be used. Two or more kinds may be used in combination.
- the spraying method for spray drying can be any spraying method such as a disk type, pressurized nozzle, pressurized two-fluid nozzle, pressurized four-fluid nozzle, etc. May be used in combination. From an economical viewpoint, spray drying is preferred. When spray drying is performed, a foaming agent or a gas is added for the purpose of accelerating the vaporization rate of the medium even if a small amount of water-soluble polymer or surfactant is added for the purpose of lowering the surface tension of the dispersion. It may be added to the dispersion.
- water-soluble polymer examples include hydroxypropylcellulose, hydroxypropylmethylcellulose, polyacrylic acid, carboxyvinyl polymer, polyethylene glycol, polybulal alcohol, polybulurpyrrolidone, methylcellulose, gum arabic, and starch paste.
- Water-soluble high molecular weight compounds described in “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) can be used, and one kind can be used alone or two or more kinds can be used in combination.
- surfactant examples include phospholipid, glycerin fatty acid ester, polyethylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, and polyoxyethylene.
- Ethylene nonyl phenyl ether polyoxyethylene polyoxypropylene glycol, polyoxyethylene sorbitan sun monolaurate, polysorbate, sorbitan monooleate, glyceride monostearate, monooxyethylene sorbitan monopalmitate, monooxyethylene sorbitan “Pharmaceutical Additives Encyclopedia” such as monostearate, polyoxyethylene sorbitan monooleate, sorbitan monopalmitate, sodium lauryl sulfate Can be mentioned those classified as a surfactant in Daily Co., Ltd. issued) You can use it alone or in combination of two or more.
- effervescent agents include “Pharmaceutical Additives Encyclopedia” such as tartaric acid, sodium hydrogen carbonate, potato starch, citrate anhydride, medicinal sarcophagus, sodium lauryl sulfate, lauric acid diethanolamide, and laumacrogol (Pharmaceutical Daily Inc. ( (E.g., issue)), and may be used alone or in combination of two or more.
- pyrolysis of sodium bicarbonate, ammonium bicarbonate, etc. to generate gas react with acids such as sodium carbonate, ammonium carbonate, etc. to generate gas Carbonates may be used. However, when using the above carbonates, it is necessary to use them together with an acid.
- the acid examples include organic acids such as citrate, acetic acid, ascorbic acid, and adipic acid, acid substances such as protonic acid such as hydrochloric acid, sulfuric acid, phosphoric acid and nitric acid, and Lewis acid such as boron fluoride. Those used as food are preferred, but other than these have the same effect. Impregnating the dispersion with gases such as nitrogen, carbon dioxide, liquefied petroleum gas, and dimethyl ether.
- gases such as nitrogen, carbon dioxide, liquefied petroleum gas, and dimethyl ether.
- water-soluble polymers are not particularly limited as long as they are added before drying.
- the molded body composition referred to in the present invention is not particularly limited as long as it contains at least one active ingredient and the porous cellulose aggregate of the present invention.
- the active ingredient is 0.001 to 99%, and the cellulose powder of the present invention is 1 to 99%. Furthermore, it can be processed by known methods such as mixing, stirring, granulation, sizing, and tableting. If the active ingredient is less than 0.001%, a therapeutically effective amount cannot be secured, and if it exceeds 99%, the porous cellulose aggregate of the present invention is less than 1%, and the practical hardness, friability, It is difficult to obtain a molded body showing collapse.
- the molded body composition of the present invention includes excipients, disintegrants, binders, fluidizing agents, lubricants, flavoring agents, flavoring agents, coloring agents, and sweetening agents as necessary. It is also free to include.
- Examples of the molded body composition referred to in the present invention include tablets, powders, fine granules, granules, extracts, pills and the like when used for pharmaceuticals. Not only pharmaceuticals, but also foods such as confectionery, health foods, texture improvers, dietary fiber reinforcements, solid foundations, bath preparations, veterinary drugs, diagnostic drugs, agricultural chemicals, fertilizers, ceramic catalysts, etc. Included in the invention.
- wrinkle active ingredient means pharmaceutical medicinal ingredient, agricultural chemical ingredient, fertilizer ingredient, feed ingredient, food ingredient, cosmetic ingredient, pigment, fragrance, metal, ceramics, catalyst, surfactant, solid form (Powder, crystal, etc.), oily, liquid, semi-solid, etc. may be used. Further, it may be coated for the purpose of elution control and bitterness reduction.
- the active ingredients may be used alone or in combination.
- the active ingredient may be dissolved, suspended, or emulsified in a medium.
- medicinal medicinal ingredients include antipyretic analgesic / anti-inflammatory drugs, hypnotic sedatives, drowsiness preventives, antipruritics, pediatric analgesics, stomachic drugs, antacids, digestive drugs, cardiotonic drugs, arrhythmic drugs, antihypertensive drugs, vasodilators Drugs, diuretics, anti-ulcers, intestinals, osteoporosis treatments, antitussive expectorants, antiasthmatics, antibacterials, frequent urinations, nourishing tonics, vitamins, etc. It becomes.
- the medicinal ingredients can be used alone or in combination of two or more.
- the active pharmaceutical ingredients used in the present invention include, for example, aspirin, aspirin aluminum, acetaminophen, ethenamide, sazapyrine, salicylamide, lactylphenetidine, isothibenzyl hydrochloride, diphenylhydraline hydrochloride, diphenhydramine hydrochloride, Difeterol hydrochloride, triprolidine hydrochloride, triberenamine hydrochloride, tondialamine hydrochloride, phenetazine hydrochloride, methodilazin hydrochloride, diphenhydramine salicylate, carbinoxamine diphenyldisulfonate, diphenhydramine tannate, diphenyldimethypropylmethadipyramedapromate teprolate Methylene disalicylate, carbinoxamine maleate, dl-chloramine-lamine maleate, d-chlorfelaminate maleate , Difeterol phosphat
- the poorly water-soluble active ingredient as used in the present invention refers to, for example, a pharmaceutical active ingredient, and the amount of water required to dissolve the solute lg in the 14th revised Japanese Pharmacopoeia is 30 mL or more. If it is sparingly soluble in water, the effect can be obtained by blending it into the composition of the present invention as an active ingredient regardless of the degree of sublimation and surface polarity.
- Examples of the poorly water-soluble and solid active ingredient include acetaminophen, ibuprofen, benzoic acid, ethenzamid, caffeine, camphor, quinine, calcium dalconate, dimethinorecapronole, snolefamine, theophylline, Antipyretic analgesics such as theopromin, riboflavin, mefenesin, phenovabital, aminophylline, thioacetazone, taercetin, rutin, salicylic acid, theophylline sodium salt, virapital, quinine hydrochloride, irgapilin, diquitoxin, griseofulvin, phenacetin, etc.
- Drugs muscle relaxants, blood pressure sclerosis agents, antihistamines, etc., acetylsiramycin, ampicillin, erythromycin, xatamycin, chloramphenicol, triacetyloleandomycin, Antibiotics such as isatin and colistin sulfate, methyltestosterone, methylandrostetolone diol, progesterone, estradiol benzoate, ethi-rest radiol, deoxycorticosterone 'acetate, cortisone acetate, hide mouth cortisone, hide mouth cortisone Steroid hormones such as acetate and bradnisolone,dienstrone, hexastronore, getinorestino lestellonole, getinorestino levesterol, non-steroidal egg yolk hormones such as chlorotriacene, and other fat-soluble vitamins
- pharmacologically active pharmaceutical ingredients described in “Japanese Pharmacopoei
- Examples of the poorly water-soluble oily and liquid active ingredient used in the present invention include vitamins such as teprenone, indomethacin 'farnesyl, menatetrenone, phitonadione, vitamin A oil, phenpentol, vitamin D, and vitamin E.
- "Japanese Pharmacy” such as DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), higher unsaturated fatty acids such as liver oil, coenzyme Q, orange oil, lemon oil, peppermint oil and other oil-soluble flavorings Medicine, medicinal active ingredients described in “Method”, “External base”, “USP”, “NF”, “EP”, and the like.
- vitamin E there are family members and derivatives, but there is no particular limitation as long as it is liquid at room temperature.
- family members and derivatives dl- ⁇ -tocopherol, acetic acid dl--tocopherol, d--tocopherol, acetic acid d- ⁇ -tocopherol, etc. Two or more types can be used together.
- Examples of poorly water-soluble semi-solid active ingredients include terrestrial dragon, licorice, keihi, peonies, button pie, force ginkgo, salamander, ginger, chimpi, maou, nantenji, oohi, onji, kikiyou,rissazushi, technicallyzou , Sarcophagus, senne force, baimo, wiki, ovata, ollen, gadju, force mitsu, gentian, go, beast, shajin, shokiyo, sojutsu, chiyouji, chinhi, biakujutsu, chikusennin, carrot, kakoch , Katsura hot springs, kososan, purple katsura hot water, small purple hot water, small blue dragon hot water, barmon winter hot water, semi-summer koboku hot water, mao hot water, etc., herbal medicine extract, oyster meat extract, propolis and propolis extraction Products, ferment
- the finely pulverized active ingredient used in the present invention is used for the purpose of improving the dispersibility of the poorly water-soluble solid active ingredient and improving the mixing uniformity of the active ingredient having a medicinal effect in a small amount. , 1-40 m or less finely pulverized.
- the average particle size of the active ingredient is more preferably 1 to 20 / z m, and further preferably 1 to 10 / ⁇ ⁇ .
- the sublimable active ingredient referred to in the present invention is not particularly limited as long as it has sublimability, and it is solid at room temperature, liquid, semi-solid. However, the state may be any.
- sublimable active ingredients examples include ⁇ Japanese pharmacopoeia '' such as benzoic acid, ethenzamid, caffeine, camphor, salicylic acid, phenacetin, ibuprofen, etc., ⁇ external group '', ⁇ USP '', ⁇ NF '', ⁇ EP ''
- the sublimable medicinal medicinal ingredients described in the above can be mentioned, and one kind selected from the above can be used alone or two or more kinds can be used together.
- the solid pharmaceutical composition of the present invention may further contain other physiologically active ingredients.
- Examples of active ingredients that are liquid at room temperature used in the present invention include vitamins such as teprenone, indomethacin 'farnesyl, menatetrenone, phytonadione, vitamin A oil, fe-pentol, vitamin D, and vitamin E. , Japanese Pharmacopoeia such as DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), higher unsaturated fatty acids such as liver oil, coenzyme Q, oil-soluble flavorings such as orange oil, lemon oil, peppermint oil ”,“ External group ”,“ USP ”,“ NF ”,“ EP ”, and the like.
- vitamins such as teprenone, indomethacin 'farnesyl, menatetrenone, phytonadione, vitamin A oil, fe-pentol, vitamin D, and vitamin E.
- Japanese Pharmacopoeia such as DHA (docosahexaenoic
- Vitamin E has various homologues and derivatives, but is not particularly limited as long as it is liquid at room temperature.
- dl a tocopherol
- acetic acid dl tocopherol
- d tocopherol
- acetic acid d tocopherol
- Two or more types can be used together.
- Examples of semi-solid active ingredients used in the present invention at room temperature include, for example, earth dragons, licorice, peony, peonies, buttonpis, power nokosou, salamander, ginger, chimpi, maou, nantenji, oohi, Onji, Kikiyou, Shazenshi, Shazenso, sarcophagus, Sene force, Baimo, Wikiwe, Obata, Oren, Gaju, force mitsu, Gentian, Go, Beast, Shajin, Shokiyo, Souju, Chiyouji, Chinhi, Beak Juk, Chikuse Traditional Chinese medicines or herbal extracts such as carrot, carrot, kakkon-yu, katsushi-yu, koso-san, shikoku-eda-yu, shikoku-yu, shosei-ryu, bakumon-toyu, half-summer Kokaku-yu, mao-yu, etc.
- Disintegrants include croscarmellose sodium, carmellose, carmellose calcium, carmellose sodium, celluloses such as low-substituted hydroxypropyl cellulose, carboxymethyl starch sodium, hydroxypropyl starch, rice starch, wheat starch
- celluloses such as low-substituted hydroxypropyl cellulose, carboxymethyl starch sodium, hydroxypropyl starch, rice starch, wheat starch
- a disintegrating agent in the “Pharmaceutical Additives Encyclopedia” published by Yakuji Nippo Co., Ltd.
- starches such as corn starch, potato starch and partially alpha starch
- synthetic polymers such as crospovidone and crospovidone copolymer What can be classified. It is free to use one kind selected from the above alone or two or more kinds.
- binder examples include sugars such as sucrose, glucose, lactose, and fructose, sugar alcohols such as mannitol, xylitol, maltitol, erythritol, and sorbitol, gelatin, pullulan, carrageenan, locust bean gum, agar, Water-soluble polysaccharides such as dalcomannan, xanthan gum, tamarind gum, pectin, sodium alginate, gum arabic, etc., celluloses such as crystalline cellulose, powdered senorelose, hydroxypropinoresenorelose, methinorescenellose, alpha-unified starch , Starches such as starch paste, synthetic polymers such as polybutylpyrrolidone, carboxyvinyl polymer, polyvinyl alcohol, inorganic compounds such as calcium hydrogen phosphate, calcium carbonate, synthetic hydrotalcite, magnesium aluminate silicate And the like, which are classified
- fluidizing agent those classified as fluidizing agents in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as hydrous silicon dioxide, key compounds such as light anhydrous keying acid, etc. Can be mentioned.
- One kind selected from the above can be used alone, or two or more kinds can be used in combination.
- Lubricants are classified as lubricants in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as magnesium stearate, calcium stearate, stearic acid, sucrose fatty acid ester, and talc. Things can be mentioned. It is possible to use one selected from the above alone or in combination of two or more.
- Examples of the corrigent include glutamic acid, fumaric acid, succinic acid, succinic acid, sodium succinate, tartaric acid, malic acid, ascorbic acid, sodium chloride sodium salt, and 1-menthol. Nichihosha Co., Ltd.) can be listed as a corrigent. One kind selected from the above can be used alone, or two or more kinds can be used in combination.
- Perfumes include oranges, vanillas, strawberry, yogurt, menthol, wikiweed oil, kayoh oil, spruce oil, hearth oil, and other “pharmaceutical additives encyclopedias” such as green tea powder (Pharmaceutical Daily Inc. ) Issuance) can be classified as fragrances and fragrances.
- One kind selected from the above can be used alone, or two or more kinds can be used in combination.
- colorants include food additives such as food red No. 3, food yellow No. 5, food blue No. 1, etc., copper chlorophine sodium, titanium oxide, riboflavin, etc. (Pharmaceutical Daily Report ( And those classified as colorants in the issue).
- food additives such as food red No. 3, food yellow No. 5, food blue No. 1, etc., copper chlorophine sodium, titanium oxide, riboflavin, etc.
- One kind selected from the above may be used alone, or two or more kinds may be used in combination.
- sweeteners they are classified as sweeteners in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as aspartame, saccharin, dipotassium darhinorelitic acid, stevia, maltose, maltitol, chickenpox, and Amatya powder. Can be mentioned. One kind selected from the above may be used alone, or two or more kinds may be used in combination.
- the following is a force for describing a method for producing a tablet mainly composed of one or more active ingredients and the porous cellulose aggregate of the present invention.
- the method includes the active ingredient and the porous cell port of the present invention.
- a method of compression molding after mixing the cellulose aggregates can be employed.
- other additives that may be mixed with other additives as necessary include, for example, the excipients, disintegrants, binders, fluidizing agents, Lubricants, flavoring agents, fragrances, coloring agents, sweeteners
- One or more selected from the components of the solubilizing agent may be blended.
- each component is not particularly limited. 0 Active ingredient, the porous cellulose aggregate of the present invention, and other additives as needed are mixed together and compression molded, ii) Activity
- the ingredients and additives such as a fluidizing agent and Z or a lubricant are pretreated and mixed, and the porous cellulose aggregate of the present invention and other additives as necessary are mixed, followed by compression molding. Either method is acceptable.
- a lubricant may be added to the mixed powder for compression molding obtained in i) or ii), and after further mixing, compression molding may be performed.
- the following production method can be employed.
- the production method include: i) pulverizing the active ingredient or using it as it is, mixing the porous cellulose aggregate of the present invention with other ingredients as necessary, and compression molding; ii) activity
- the components are dissolved or dispersed in water and Z or an organic solvent and Z or a solubilizing agent, and then adsorbed on the porous cellulose aggregate and Z or other additives used in the present invention as necessary.
- Any of the method of mixing with the porous cellulose aggregate of the present invention and Z or other additives, distilling off water and Z or an organic solvent as required, and performing compression molding may be used.
- the crystalline form of the active ingredient before compression molding may be the same as or different from that before the preparation, but is preferably the same in terms of stability.
- a water-insoluble active ingredient it is particularly effective to use a water-soluble polymer and a surfactant in combination as a solubilizing agent and disperse them in a medium.
- the other additives referred to here are additives other than the porous cellulose aggregate of the present invention.
- liquid dispersion such as polyethylene glycol
- the dispersion in which it is dispersed becomes liquid or semi-solid. Therefore, it cannot be tableted unless it is excellent in compression moldability and fluidity like the porous cellulose aggregate of the present invention.
- polyethylene glycol or the like is used as a dispersion of a pharmaceutical active ingredient, it is said that when the active ingredient is absorbed into the body, it takes a structure that is coated with a polyethylene glycol in the blood. It is also expected to maintain the medicinal properties of easily active components that are metabolized in the liver.
- the method of adding each component is usually performed and is not particularly limited as long as it is a method.
- a small suction transport device, a pneumatic transport device, a bucket conveyor, a pressure transport device, a vacuum converter Even if it is added continuously using a vibratory quantitative feeder, spray, funnel, etc., throw it all together.
- the concentration of the active ingredient in the final product can be determined by adopting a method of spraying them on porous cellulose aggregates or other additives. This is preferable because the tack is small.
- the spraying method uses a pressure nozzle, two-fluid nozzle, four-fluid nozzle, rotating disk, ultrasonic nozzle, etc. to spray the active ingredient solution and dispersion, and a method of dropping the active ingredient solution Z dispersion from the tubular nozzle. No!
- the active ingredient solution Z dispersion When the active ingredient solution Z dispersion is added, it may be layered or coated so that the active ingredient is laminated on the surface of the porous cellulose aggregate particles, or may be supported inside the porous cellulose aggregate particles.
- the active ingredient solution Z dispersion may be used as a binding solution to granulate porous cellulose aggregate particles or a mixture of porous cellulose and other additives into a matrix. Layering and coating may be wet or dry.
- the mixing method is not particularly limited as long as it is a normal method, but is a container rotary mixer such as a V-type, W-type, double cone type, container tack type mixer, or high-speed stirring.
- Stirring mixers such as a mold, a universal stirring type, a ribbon type, a bag type, and a Nauter type mixer, a high-speed fluidized mixer, a drum mixer, and a fluidized bed mixer may be used. Also shaker etc.
- a container-shaking mixer can also be used.
- the compression molding method of the composition is usually performed and is not particularly limited as long as it is a method, but a method of compression molding into a desired shape using a mortar and a pestle, and compression molding into a sheet in advance A method of cleaving into the desired shape may be used.
- a roller press such as a static pressure press, a briquetting roller press or a smooth roller press, a compressor such as a single punch tablet press or a rotary tablet press is used. it can.
- a method for dissolving or dispersing the active ingredient in a medium is not particularly limited as long as it is a commonly used dissolution and dispersion method, but it is a one-way rotation type, multi-axis rotation such as a portable mixer, a three-dimensional mixer, and a side mixer. , Reciprocating reversal, up-and-down moving, rotating + up-and-down moving, pipe-type stirring and mixing methods, jet-type stirring and mixing methods such as line mixers, gas blowing type stirring and mixing methods, high shear You can use a mixing method that uses a homogenizer, high-pressure homogenizer, ultrasonic homogenizer, or a container-shaking mixing method that uses a shaker!
- the solvent used in the above production method is not particularly limited as long as it is used in pharmaceuticals.
- water and Z or an organic solvent may be used.
- Alcohols such as methanol, ethanol, isopropyl alcohol, butyl alcohol, 2-methylol butyl alcohol and benzyl alcohol, hydrocarbons such as pentane, hexane, heptane and cyclohexane, ketones such as acetone and ethylmethyl ketone can be classified as a solvent in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.). It can be used alone or in combination of two or more. After being dispersed once with the above medium, the medium may be removed and dispersed in a different medium.
- water-soluble polymer as a solubilizer examples include hydroxypropylcellulose, hydroxypropylmethylcellulose, polyacrylic acid, carboxyvinyl polymer, polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, ethylcellulose, Water-soluble polymers such as gum arabic, starch paste, etc. listed in the “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) are listed. Is also free.
- Oils and fats as solubilizing agents include, for example, stearic acid monoglyceride, stearic acid “Pharmaceutical Additives Encyclopedia” such as triglycerides, stearic acid sucrose ester, paraffins such as liquid paraffin, hard oils such as carnauba wax, hardened castor oil, castor oil, stearic acid, stearyl alcohol, polyethylene glycol (Pharmaceutical Daily)
- the fats and oils listed in “Issue Co., Ltd.” can be used. They can be used alone or in combination of two or more.
- Surfactants as solubilizing agents include, for example, phospholipids, glycerin fatty acid ester, polyethylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene cetyl ether, polyoxyethylene stearin.
- the tablet referred to in the present invention contains the porous cellulose aggregate of the present invention, one or more active ingredients, and optionally other additives, and can be obtained by compression molding.
- the tablet composition containing the porous cellulose aggregate of the present invention can obtain practical hardness by a simple method such as a direct tableting method without going through complicated steps. Dry granule compression method, wet granule compression method, latter method, multi-nuclear tablet with pre-compressed tablet as inner core, and multi-layer tablet manufacturing method in which a plurality of pre-compressed molded products are stacked and compressed again. Use the manufacturing method.
- the porous cellulose aggregate of the present invention is excellent in various physical properties required as a compression moldability, self-flowing property, and a disintegrating excipient. Tablets that easily cause tableting troubles such as peeling from the inside and cracks, and that contain a large amount of drugs, such as tablets containing extract powders such as popular medicines and Kampo medicines, small tablets, and constrictions at the edges Non-circular deformed tablets that have areas where pressure is not evenly applied, It is effective for drugs such as enzymes and proteins that are easily inactivated by friction with the formulation, and tablets containing coated granules.
- the cellulose powder of the present invention is excellent in compression moldability and disintegration, a tablet showing a practical friability at a relatively low compression pressure can be obtained. For this reason, voids (water conduits) can be maintained in the tablet, which is also effective for orally disintegrating tablets that disintegrate rapidly in the oral cavity.
- porous cellulose aggregate of the present invention has a secondary aggregation structure in which primary particles are aggregated, it is excellent in the splitting property of the particles themselves, and when used in a scored tablet or the like, it is easy to uniformly divide the tablet. Become. Furthermore, since the porous cellulose aggregate of the present invention has a developed porous structure, and the cellulose particles themselves are excellent in the retention of fine-particle drugs, suspension drugs, and liquid components, tablets using the same are also available.
- the solid, liquid, semi-solid active ingredient and porous cellulose aggregate particle composition obtained by the method described so far can be used as a solid preparation in the form of powder or granule, or the powder or granule composition can be used.
- the product may be further coated with a coating agent and used as a coating powder or a granular solid preparation.
- the powder or granular composition with or without the coating obtained here may be filled in a capsule or used. They may be compressed and used as a tablet-type solid preparation. In addition, use capsules or tablets with coating.
- a coating agent in the case of coating for example, ethyl acrylate
- the porous cellulose aggregate of the present invention has a developed porous structure, and the particles themselves are excellent in drug retention, so that the particles carrying the drug in the pores are used as fine granules as they are. Alternatively, they may be granulated and used as granules, or they may be compression molded. These granules, granules and tablets may be further coated thereon.
- the loading method is not particularly limited as long as it is a known method, but i) a method of mixing with a fine drug and loading it in the pores,
- the porous cellulose aggregate of the present invention has a developed pore structure and has moderate water retention and oil retention, so it can be used as core particles for layering and coating in addition to excipients. In this case, there is an effect of suppressing aggregation between particles in the layering and coating processes. Layering and coating may be dry or wet.
- the active ingredient is a solution, suspension, or emulsion
- porous cellulose aggregate particles or a mixture of porous cellulose aggregate particles and other additives as a carrier is used. It is possible to use a method of retaining the active ingredient by immersing it in an active ingredient solution, suspension or emulsion. Depending on conditions such as active ingredient species and concentration, even liquid dipping methods such as stubble dipping are excellent in that the uniformity of the active ingredient is practically maintained and the process is simple compared to the above spraying. Yes.
- the active ingredient is a solution, suspension, or emulsion
- the active ingredient solution, suspension, or mixture of porous cellulose aggregate particles or porous cellulose aggregate particles and other additives is used as a carrier.
- the dispersion After immersing in the emulsion, the dispersion may be spray-dried to form a composite.
- porous cellulose aggregate particles before or after the addition of the active ingredient solution Z dispersion or the mixture of the porous cellulose aggregate particles and other additives are in a state in which each unit particle is individually dispersed. Also, you can take the form of agglomerated granules.
- granulation methods in the case of granulation include dry granulation, wet granulation, heated granulation, spray granulation, and microcapsule koji.
- the fluidized bed granulation method, the stirring granulation method, the extrusion granulation method, the crushing granulation method, and the rolling granulation method are effective as the wet granulation method.
- the layer granulator the fluidized powder is sprayed with the binding liquid and granulated.
- the stirring granulation method powder is mixed, kneaded, and granulated simultaneously in a sealed structure by rotating the stirring blade in the mixing tank while adding the binding liquid.
- the extrusion granulation method granulation is performed by forcibly extruding the wet mass kneaded by the addition of the binding liquid from a screen of an appropriate size by a screw type or basket type method.
- the crushing granulation method the wet lump kneaded by the addition of the binding liquid is cut and crushed with a rotary blade of a granulator, and granulated by ejecting it from the outer screen by the centrifugal force.
- rolling granulation method rolling is performed by the centrifugal force of a rotating rotor, and spherical particles having a uniform particle size are grown in a snowman-like manner using a binding liquid sprayed by a spray gun. Grain.
- the method for drying the granulated product can be any of hot air heating type (shelf drying, vacuum drying, fluidized bed drying), conduction heat transfer type (flat pan type, shelf box type, drum type), freeze drying, etc. Use one of these methods You can also.
- hot air heating type the material is brought into direct contact with hot air, and at the same time, evaporated water is removed.
- conduction heat transfer type the material is indirectly heated through the heat transfer wall.
- a mixture of an active ingredient and porous cellulose aggregate particles, or a mixture of one or more active ingredients and porous cellulose aggregate particles, and if necessary, other additives Compressed by the usual method (direct tableting method), ii) After mixing the active ingredient, porous cellulose aggregate particles, and other additives as necessary, granulate into granules. Compression molding by the method. (Wet Z dry granule compression method), or m) active ingredient, porous cellulose aggregate particles, and other additives as necessary, mixed and granulated into granules, and more porous Cellulose aggregate particles and other additives as necessary are mixed and compression-molded by a normal method (wet Z dry granule powder compression method).
- the method of adding one or more active ingredients, porous cellulose aggregates, other additives, or granules is not particularly limited as long as it is a commonly used method. It may be added continuously using a pneumatic transportation device, a bucket conveyor, a pressure-feeding transportation device, a vacuum conveyor, a vibratory quantitative feeder, a spray, a funnel or the like, or may be charged all at once. Besides being compressed and molded as described above and used as a tablet, the tablet composition of the present invention also has excellent retention of solid and liquid components, and thus improves fluidity, blocking resistance, and aggregation resistance. It may be used as a granule or powder for the purpose. As a method for producing granules and powders, for example, a deviation of dry granulation, wet granulation, heat granulation, spray drying, or microencapsulation may be used!
- Cellulose primary particles which also have natural cellulosic material strength, are dried if necessary, placed on a sample table with carbon tape, and platinum palladium is vacuum-deposited.
- the film thickness is 20 nm or less), and using JASCO Corporation Heng SM-5550LV (trade name), observed at an acceleration voltage of 6 kV and a magnification of 250 times to obtain the average value of three typical cellulose primary particles. .
- Cellulose primary particles which also have natural cellulosic material strength, are dried if necessary, placed on a sample table with carbon tape, and after vacuum deposition of gold, a focused ion beam processing device (manufactured by Hitachi, Ltd., FB — Using 2100 (trade name)), a cross section of cellulose primary particles was cut out with a Ga ion beam and observed at an acceleration voltage of 6 kV and a magnification of 1500 times. The average value of three typical cellulose primary particles It was.
- the cellulose dispersion before drying was accurately weighed (A (g)) in a centrifuge tube (with an internal volume of 50 cm 3 ), and pure water was added thereto to prepare a cellulose concentration of about 1%.
- the cellulose dispersion before drying was weighed so that the weight after preparation was about 30 g.
- a tube for centrifugation containing approximately 1% concentration of cellulose dispersion is connected to an inverter multipurpose high-speed cooling centrifuge (Model No.
- a laser diffraction particle size distribution analyzer (LA-910 (trade name) manufactured by Horiba, Ltd.), a cellulose dispersion liquid dispersed in water was sonicated for 1 minute, and the cumulative volume measured at a refractive index of 1.20 was 50. Expressed as% particles.
- this measured value does not necessarily correlate because the measurement principle is completely different from the particle size distribution of the dry particles obtained by the following low tap method.
- laser The average particle diameter measured by one diffraction is measured from the volume frequency depending on the major axis of the fibrous particles, whereas the average particle diameter obtained by the low tap method is obtained by sieving the obtained powder on a sieve. Therefore, it is dependent on the minor axis of the fibrous particles. Therefore, the laser diffraction type that depends on the major axis of the fibrous particles may be larger and more value than the low tap type that depends on the minor axis of the fibrous particles.
- X-ray diffraction was performed using an X-ray diffractometer, and the determination was made based on the X-ray pattern.
- the average particle size of the powder sample is a low-tap sieve shaker
- Measurement was performed by the BET method using a product name, TriSTAR manufactured by Micromeritics Co., Ltd., using nitrogen as an adsorption gas. Each sample powder was charged into a cell about lg and measured. Each sample powder used for measurement was dried under reduced pressure at 110 ° C for 3 hours.
- the pore distribution was determined by mercury porosimetry using Shimadzu Corporation auto pore type 9520 (trade name). Each sample powder used for measurement was dried under reduced pressure at room temperature for 15 hours. By measuring the initial pressure at 20 kPa, from the obtained pore distribution, a “clear peak portion” in the pore diameter range of 0.1 to 15 m was calculated as the intraparticle pore volume. In addition, from the obtained pore distribution, the peak top of the “clear peak” seen in the pore diameter of 0.1 to 15 m was taken as the central pore diameter, and the value was read.
- Aspirin a small amount of pulverized crystal aspirin, ⁇ ⁇ . 5mm, 1-pass treatment
- 5Z5 total amount 0.5g
- the decomposition rate was measured. 8 g of ferric sulfate (III) sulfate ⁇ 12 hydrate was introduced into a lOOmL volumetric flask, pure water was made up to 10 mL, and used as a color test solution.
- Degradation rate (%) (1 (Absorbance after storage Z Absorbance before storage)) X 100
- Sugihara style repose angle measuring instrument (slit size depth 10 X width 50 X height 140 mm, width 50 mm A protractor was installed at the position), and a quantitative feeder was used to measure the dynamic self-fluidity when the cellulose powder was dropped into the slit at 3 gZ.
- the angle between the bottom of the device and the formed layer of cellulose powder is the angle of repose.
- each cellulose powder is weighed and placed in a mortar (manufactured by Kikusui Seisakusho, using material SUS2, 3), and pressure is applied by a circular flat bowl (made by Kikusui Seisakusho, using material SUS2, 3) with a diameter of 1.1 cm.
- the product was compressed to 10 MPa and 20 MPa (product name, PCM-1A manufactured by Aiko I Engineering Co., Ltd., compression speed is lcmZ), held at the target pressure for 10 seconds, and the cylindrical molded body was taken out.
- Acetaminophen (manufactured by API Corporation, powder type) 55 parts by weight, light anhydrous kaiic acid (manufactured by Nippon Aerosil Co., Ltd., Aerosil 200 (trade name)) is obtained in 0.25 parts by weight, Examples and Comparative Examples 27 parts by weight of the obtained cellulose particles or powder, 2 parts by weight of crospovidone (BASF, Kollidon CL (trade name)), and 15 parts by weight of granulated lactose (Lattose-Egyland, Super-Tab (trade name)) Place in a 100-liter scale V-type mixer (Dalton), mix for 30 minutes, and then add 0.5 parts by weight of magnesium stearate (Taipei Sogaku Sangyo Co., Ltd., vegetable) 5 Mixed for minutes to obtain a prescription powder.
- crospovidone BASF, Kollidon CL (trade name)
- 15 parts by weight of granulated lactose Lattose-E
- the total charge of each powder was 25 kg.
- a rotary tableting machine manufactured by Kikusui Seisakusho Co., Ltd., LIBRA-II (trade name), rotating disk diameter ⁇ 410 ⁇ , 36 stand
- Tableting was performed using a 12R mortar with a diameter of 8 mm at a turntable rotation speed of 50 rpm and a stirring compression pressure of 7.5 kN to obtain a tablet having a weight of 200 mg.
- the cylindrical molded body or tablet is broken by applying a load in the diameter direction of the cylindrical molded body or tablet. The load of was measured. The average value of 10 samples was expressed.
- Disintegration tests were conducted in accordance with the 14th revised Japanese Pharmacopoeia, General Tests, and Tablet Disintegration Tests.
- a disintegration tester manufactured by Toyama Sangyo Co., Ltd., NT-40HS type (trade name), with a disk for cellulose alone, no disk for prescription), 37 ° C, pure Calculated as the disintegration time in water. The average value of 6 samples was expressed.
- the weight (Wa) of 20 tablets was measured, put in a friability tester (Japan Machinery Co., Ltd., PTF-3RA type (trade name)), rotated for 4 minutes at 25 rpm, and then adhered to the tablets. The fine powder was removed, the weight (Wb) was measured again, and the friability was calculated from the following equation.
- Friction 100 X (Wa-Wb) / Wa
- Randomly select 100 tablets obtained by a rotary tableting machine observe them visually, count the number of tablet cracks (lamination), chipping (chipbing), and peeling (cabbing). It was shown as a value (percentage) divided by the number of tablets observed.
- G Pulp weight X (100—Pulp moisture) Z 100
- Pulp moisture is calculated by drying the pulp for 1.5 hours at 125 ° C.
- a high-pressure homogenizer manufactured by MFIC Corp., trade name "Microfluidizer I" M-140K type, The material treated twice at a treatment pressure of 200 MPa was centrifuged at a centrifugal force of 19600 m / s 2 and the supernatant was discarded to obtain a sediment. About 2kg of the sediment dried for 16 hours at 40 ° C and 30L of 4N hydrochloric acid aqueous solution were put into a low-speed stirrer (Ikebukuro Sakai Kogyo Co., Ltd., 50LGL reactor (trade name)) and stirred at 40 ° C, 48 hours Hydrolysis gave an acid-insoluble residue.
- a low-speed stirrer Ikebukuro Sakai Kogyo Co., Ltd., 50LGL reactor (trade name)
- the resulting acid-insoluble residue is thoroughly washed with pure water, filtered, introduced into a 90-liter plastic bucket, and purified water is added so that the total solid concentration is 20% by weight.
- 3-1 Motor The mixture was neutralized with aqueous ammonia while stirring at pH (pH after neutralization was 7.5 to 8.0).
- the cellulose dispersion was spray-dried (dispersion supply rate 6 kgZhr, inlet temperature 180 to 220 ° C., outlet temperature 50 to 70 ° C.) to obtain cellulose particles A as cellulose aggregates.
- Table 1 shows the physical properties of cellulose particles A.
- Fig. 1 shows the results of measuring the pore distribution of cellulose particles A by mercury porosimetry
- Fig. 6 shows an electron micrograph of the cross section of cellulose particles A.
- “clear peaks” derived from the pores in the particles were observed in the cellulose particles A at 0.1 to 15 m. This is about the same size as the pore size shown in the electron micrograph by SEM.
- the peak shown at 10-50 / ⁇ ⁇ shown in FIG. 1 is caused by the particle gap.
- FIG. 6 it was observed that the intra-particle pores having a pore diameter corresponding to the “clear peak portion” shown in FIG. 1 were developed.
- the average fiber width of the primary cellulose particles is about 19 ⁇ m, the average thickness is about 3 ⁇ m, the level-off polymerization degree is 140-220, the moisture is 5-10%, Whiteness 92-97%, Viscosity 5-40cps, S 5-15%, S 1-8%, Copper value 0.5
- the average fiber width of the primary cellulose particles in the cellulose dispersion having a solid content of 15% by weight was 22 ⁇ m, the average thickness was 2.5 m, and the average particle size was 38 ⁇ m.
- the cellulose dispersion is spray-dried (dispersion supply rate: 6 kgZhr, inlet temperature: 180 to 220 ° C, outlet temperature: 50 to 70 ° C).
- Cellulose particles B which are roulose aggregates, were obtained. Table 1 shows the physical properties of Cellulose Particle B.
- the average fiber width of the primary cellulose particles is about 19 ⁇ m, the average thickness is about 3 ⁇ m, the level-off polymerization degree is 140-220, the moisture is 5-10%, Whiteness 92-97%, Viscosity 5-40cps, S 5-15%, S 1-8%, Copper value 0.5
- Pulp of ⁇ 1.5 and dichloromethane extract 0.03 ppm or less was obtained. 2 kg of the pulp and 30 L of 5 N hydrochloric acid aqueous solution are hydrolyzed at 40 ° C for 20 hours while stirring in a low-speed stirrer (trade name, 50LGL reactor, manufactured by Ikebukuro Sakai Kogyo Co., Ltd.), acid insoluble A residue was obtained. The obtained acid-insoluble residue is thoroughly washed with pure water, filtered, introduced into a 90 L plastic bucket, and purified water is added so that the total solid concentration is 15% by weight. While stirring with a motor, the solution was neutralized with aqueous ammonia (pH after neutralization was 7.5 to 8.0).
- the average fiber width of the primary cellulose particles in the cellulose dispersion having a solid content of 18% by weight was 22 ⁇ m, the average thickness was 2.5 m, and the average particle size was 35 ⁇ m.
- the cellulose dispersion was spray-dried (dispersion supply rate 6 kgZhr, inlet temperature 180 to 220 ° C., outlet temperature 50 to 70 ° C.) to obtain cellulose particles C as cellulose aggregates.
- Table 1 shows the physical properties of Cellulose Particle C.
- a high-pressure homogenizer (MFIC Cor p., “Microfluidizer I” M-140K type ( The product treated 4 times at a trade name of 200 MPa) was centrifuged with a centrifugal force of 19600 mZs 2 and the supernatant was discarded to obtain a sediment.
- About 2 kg of the sediment dried at 40 ° C for 16 hours and 30 L of 5N hydrochloric acid aqueous solution were placed in a low-speed stirrer (Ikebukuro Sakai Kogyo Co., Ltd., 50 LGL reactor (trade name)) while stirring. ° C, 2 Hydrolysis for 0 hour gave an acid-insoluble residue.
- the obtained acid-insoluble residue is thoroughly washed with pure water, filtered, introduced into a 90-liter plastic bucket, and pure water is added so that the total solids concentration becomes 20% by weight.
- the mixture was neutralized with aqueous ammonia while stirring at pH (pH after neutralization was 7.5 to 8.0).
- the average fiber width of the primary cellulose particles in the cellulose dispersion having a solid content of 20% by weight was 15 ⁇ m, the average thickness was 1.5 m, and the average particle size was 31 m.
- the cellulose dispersion was spray-dried (dispersion supply rate: 6 kgZhr, inlet temperature: 180 to 220 ° C., outlet temperature: 50 to 70 ° C.) to obtain cellulose particles D as cellulose aggregates.
- Table 1 shows the physical properties of Cellulose Particle D.
- the cellulose dispersion was spray-dried (dispersion supply rate 6 kgZhr, inlet temperature 180 to 220 ° C., outlet temperature 50 to 70 ° C.) to obtain cellulose particles E as cellulose aggregates.
- Table 1 shows the physical properties of Cellulose Particle E.
- the cellulose dispersion was spray-dried (dispersion supply rate 6 kgZhr, inlet temperature 180 to 220 ° C., outlet temperature 50 to 70 ° C.) to obtain a cellulose aggregate.
- This cellulose aggregate was pulverized by using an airflow type pulverizer (manufactured by Seishin Enterprise Co., Ltd., single track jet mill STJ-200 type (trade name)), and cellulose powder F (in Example 1 of Patent Document 6) Equivalent).
- Table 1 shows the physical properties of the obtained cellulose powder F.
- Cellulose powder G (corresponding to Example 5 of Patent Document 9), except that the hydrolysis conditions were 3N hydrochloric acid solution, 40 ° C, 40 hours, and drying was performed with a solid content concentration of 8%. ) Table 1 shows various physical properties of the obtained cellulose powder G.
- the average fiber width of the cellulose primary particles in the cell mouth dispersion before drying was 39 ⁇ m, the average thickness was 8 ⁇ m, and the average particle size was 47 ⁇ m.
- Table 1 shows various physical properties of the obtained cellulose powder H.
- the average fiber width of the primary cellulose particles in the cell mouth dispersion before drying is 39 ⁇ m, the average thickness is 8 ⁇ m, The average particle size was 49 ⁇ m.
- Fig. 2 shows the pore distribution of cellulose powder H measured by mercury porosimetry.
- Cellulose powder H did not have a “clear peak” as observed in the porous cellulose aggregate of Example 1. Without such a “clear peak”, the pores are those of the original cellulose primary particles.
- the peak observed at 10 to 50 / ⁇ ⁇ is due to the particle gap in consideration of the particle size distribution force of the powder.
- the product name “Avicel” PH-200 manufactured by FMC was used as the cellulose powder.
- cellulose aggregate obtained in Comparative Example 1 a bantam mill (Hosokawa Iron Works Co., use cleans diameter 2 mm) cellulose forces 0 weight Pharmacopeia ⁇ Seto ⁇ amino phen (manufactured Merukuhoei) were finely ground in a 0/0 Acetoaminophen is 50% by weight and 500g of powder meter is introduced into a high-speed agitation granulator (manufactured by Gohashi Seisakusho, NSK250 (trade name)). Then, the mixture was further mixed for 2 minutes while adding 245 to 255 g of 50% by weight aqueous ethanol solution as a binding solution to obtain a spherical granulated product.
- cellulose powder K (corresponding to Example 2 of Patent Document 2).
- Table 1 shows the physical properties of the obtained cellulose powder K.
- Fig. 3 shows an electron micrograph of cellulose particles K at a magnification of 250
- Fig. 5 shows an electron micrograph at a magnification of 1,500.
- a “clear peak” was confirmed for cellulose powder K in the pore distribution of 0.1 to 10 m.
- the particle structure is not a “secondary aggregate structure in which primary particles are aggregated” but a “uniform and dense film-like barrier rib structure”. It was confirmed to have.
- the cellulose primary particles are refined and the refined particles are strongly bonded during drying, so that the boundary of the primary particles is unclear.
- the particles did not disintegrate in the water.
- the cylindrical molded body (compressed pressure lOMPa) obtained with cellulose particles K was fragile and severely worn.
- the average particle size of the primary cellulose particles in the 9.8 wt% cellulose dispersion was 1 ⁇ m.
- the cellulose dispersion was used and spray dried using a nitrogen circulating spray dryer.
- the obtained sample was cut into a crude fraction of 250 m or more using a JIS standard sieve to obtain cellulose powder L (corresponding to Example 2 of Patent Document 3).
- Table 1 shows the physical properties of the obtained cellulose powder L.
- Cellulose particles L showed a “clear peak” below 0.1 m from the results of pore distribution measurement by mercury porosimetry.
- SEM micrographs confirmed that the particle structure was not a “secondary aggregate structure in which primary particles were aggregated” but a “film-like partition structure that was uniformly dense and continuous”. In the partition walls, the boundaries of the primary particles were unclear. The particles did not disintegrate in water, and the rate of aspirin degradation was higher than that of the drug alone.
- the cellulose dispersion was spray-dried (dispersion supply rate 6 kgZhr, inlet temperature 180 to 220 ° C., outlet temperature 50 to 70 ° C.) to obtain cellulose powder M (corresponding to Example 4 in Patent Document 4).
- Table 1 shows various physical properties of the cellulose powder M.
- Fig. 4 shows an electron micrograph of cellulose powder M at a magnification of 250 times.
- the average fiber width of the primary cellulose particles in the cellulose water / ethanol dispersion before drying was 31 ⁇ m, the average thickness was 8 ⁇ m, and the average particle size was 28 ⁇ m. After air-drying, it is crushed with a normal hammer mill, and coarse particles are removed with a 40-mesh sieve. Corresponding to Example 1). Table 1 shows the physical properties of the obtained cellulose powder N.
- % Dispersion was obtained.
- the average fiber width of the primary cellulose particles in the cellulose dispersion was 39 m, the average thickness was 8 ⁇ m, and the average particle size was 33 ⁇ m.
- the resulting cellulose dispersion was dispersed into a drum dryer (manufactured by Kashiwagi Machine Mfg. Co., Ltd., KDD-1 type (trade name), steam pressure 0.35 MPa, drum temperature 136 ° C, drum rotation speed 2 rpm.
- cellulose powder O After drying at a body temperature of 100 ° C., the mixture was pulverized with a hammer mill, and the coarse fraction was removed with a sieve having an opening of 425 ⁇ m to obtain cellulose powder O (corresponding to Example 1 of Patent Document 7). Table 1 shows the physical properties of the obtained cellulose powder O.
- Cellulose powder K obtained in Comparative Example 10 was removed using an air jet sieve, large particles were removed with a 75 ⁇ m sieve, fine particles were removed with a 38 ⁇ m sieve, and cellulose powder ⁇ (implemented in Patent Document 8) Equivalent to the example).
- Table 1 shows various physical properties of the obtained cellulose powder P.
- Cellulose spherical core particles Q were extremely heavy and had excellent fluidity.
- the specific surface area of the particles and the pore volume within the particles were almost 10.10 and 20MPa. .
- the mixture was milled for 1 hour with an active mixing stirrer (manufactured by Sanei Seisakusho, 5DM-03-R type (trade name)). Water is added to this ground cake, and the mixture is made into a cellulose dispersion with a solid content of 12.5% by weight using a homomixer (made by Tokushu Kika Kogyo Co., Ltd., TK homomixer MARKII type (trade name)). , Particle size, pH, and IC were adjusted. The primary cellulose particles in the cellulose dispersion obtained here had an average particle diameter of 7 m.
- the dispersion is spray-dried on a rotating disk of about 8 cm with a rotating disk speed of 5000 rpm, a flow rate of 6 LZhr, an intake air temperature of 170 ° C, and an exhaust temperature of 85 ° C, and is coarsened with a sieve having an opening of 177 m.
- the particles were removed to obtain cellulose powder R.
- Table 1 shows various physical properties of the obtained cellulose powder R (corresponding to Example 1 of Patent Document 14).
- Cellulose particle R is also heavy and has excellent fluidity Specific surface area, small pore volume in the particle 10 and 20MPa are used to form a molded body, but the molded body is brittle. It was worn out when taken out and easily broken by hand.
- wet flocs 90% by weight was further thoroughly washed with pure water and then ground with a planetary mixer (the average particle size of the cellulose dispersed particles in the ground wet floc was 1 ⁇ m). there were). 90% and 10 parts by weight (dry base) of wet floc, which has been ground and not ground, are introduced into a 90-liter poly bucket and pure water is added so that the total solids concentration is 30% by weight.
- the range of repose angle of the porous cellulose aggregate of the present application the range of hardness of the cylindrical molded body molded with lOMPa, the range of hardness of the cylindrical molded body molded at 20 MPa, the circle molded at 20 MPa
- the comparative examples 15 to 17 corresponding to the examples of Patent Document 1 satisfy only the collapse time range of the columnar molded body.
- the advantage of the porous cellulose aggregate of the present application is that the collapse time is short when compared at the same degree of hardness (Example 5 and Comparative Example 15, Example 2 and Comparative Example 16, Example 3 and Comparative Example 17) have the advantage that the cylindrical molded body can be collapsed in about half the time.
- the porous cellulose aggregate of Patent Document 1 has a large central pore size. This is due to the fact that the median pore diameter of the porous cellulose aggregate of the present application is at least about 3.0 m while it is about 1.5 / zm. This is because the permeation rate is high.
- Acetaminophen (Api Co., Ltd., powder type) 55 parts, light anhydrous caustic anhydride (Nippon Aerosil Co., Ltd., Aerosil 200 (trade name)) 0.25 parts by weight, cellulose obtained in Example 1 27 parts by weight of powder A or cellulose powders B, C, E to L, and O obtained in Comparative Examples 1, 2, and 4 to 11 and 14, Crospovidone (BASF, Kollidon CL (trade name)) Double Part, 15 parts of granulated lactose (Lattose New Zealand, Super-Tab (trade name)) are placed in a 100 L scale V-type mixer (Dalton), mixed for 30 minutes, then magnesium stearate ( 0.5% by weight of Taihei Ishigaku Sangyo Co., Ltd.
- a rotary tableting machine manufactured by Kikusui Seisakusho, LIBRA-II (trade name), 36-spindle rotating disk diameter ⁇ 410mm
- a turntable speed of 8mm and 12R Tableting was performed at 50 rpm and a compressive force of 7.5 kN to obtain a tablet having a weight of 200 mg. Tablets 60 minutes after the start of tableting were sampled, and the tablet weight, hardness, friability, and tableting failure incidence were measured. Table 2 shows the physical properties of the obtained tablets.
- this formulation contains a high content of drugs with poor moldability, it is difficult to make the tablet hardness 50N or more, which is called practical hardness. It is difficult to obtain a practical tablet because it is prone to failure.
- those with a tablet hardness of 50N or more have comparative examples 18, 19, 26, 27, and 28, but the variation in tablet weight is 1.8 to 3.5%, which is 0.8 in the examples. It was difficult to put it to practical use because it was very high.
- Acetaminophen manufactured by API Corporation, pulverized powder type, average particle size 16 m
- 40 parts light anhydrous carboxylic acid (manufactured by Nippon Aerosil Co., Ltd., Aerosil 200 (trade name)) 0.5 parts by weight, cellulose powders C and D obtained in Examples 3 and 4, cellulose powders G, I to P, S and V obtained in Comparative Examples 2, 4 to 11, 14 and 17 30 parts by weight, cross strength Lumellose sodium (sales from Asahi Kasei Chemicals Co., Ltd., manufactured by Nichirin Chemical Industry Co., Ltd., Kikkolate ND— 2HS (trade name)), 2 parts by weight, granulated lactose (from Ratato-Eugeland, Sup er-Tab (trade name)) 27.
- This prescription has the same fluidity as that used in the previous section because the type of drug is the same as that used in the previous section. For this reason, it is a formulation that has a lower drug content than the previous item, but is difficult to reduce the tablet weight variation, and it is difficult to make the tablet hardness more than 50N practical hardness. It is difficult to obtain a practical tablet from the viewpoint of easy failure.
- the tablet hardness strength s practical hardness 50N or more later, it comparison f row 29, 30, 33, 36, 37, 38, 39 force S, except for comparative example 39 3. Since the weight variation of the tablets was high compared with 5% and 0.2-0.5% of the examples, it was difficult to put it to practical use.
- Comparative Example 39 is equivalent to the porous cellulose aggregate of the present invention in terms of tablet hardness and tablet weight variation, but the collapse time at the same degree of hardness is inferior.
- the direct tableting method is susceptible to the effects of drug lot-to-lot differences, particularly the particle size, and is difficult to produce stably. Therefore, it is preferable to pulverize and manage the drug according to the particle size of the drug. The problem arises that the drug content cannot be increased due to the poor mobility.
- those having particularly good fluidity that is, those having an angle of repose in a range as low as 25 ° to 36 ° are useful for solving the above problems.
- the porous cellulose aggregate of the present invention has an advantage not found in conventional cellulose powders in that the fluidity and moldability are enhanced at the same time to overcome the above-mentioned problems.
- the total charge of each powder was 2 kg.
- the obtained prescription powder was turned into a turntable with a rotation speed of 54 rpm and a compression force of 8 kN using a 8 mm diameter, 12R punch.
- a weight of 180 mg Tablets 10 minutes after the start of tableting were sampled, and the tablet weight, hardness, friability, tableting failure rate, and disintegration time (without disk) were measured.
- Table 4 shows various physical property values of the obtained tablets.
- This prescription is a prescription that is difficult to reduce the variation in tablet weight because the drug is insoluble in water and pulverized and used, so its disintegration into water is poor and its fluidity is poor.
- it is a formulation that causes tableting problems that cause high pressure cabbing, and is one example where it is difficult to make a practical tablet with a high drug content.
- those having a tablet hardness of 50N or more are available in Comparative Examples 40, 41, 64, 47 to 51.Except for Comparative Examples 50 and 51, the variation in tablet weight is 1.6-4. It was very high compared to 0% and 0.5-0.7% of the examples, and it was difficult to put it to practical use.
- Comparative Examples 50 and 51 have the same strength as the porous cellulose aggregate of the present invention in terms of tablet hardness and tablet weight variation, and the disintegration time is inferior at the same degree of hardness.
- the porous cellulose aggregate of the present invention clearly shows that the lower the solubility of the drug in water, the wider the disintegration time difference from the porous cellulose aggregate of Patent Document 1. This is superior to the porous cellulose aggregate of Patent Document 1 in that it rapidly disintegrates.
- Example 9 B 0.5 70 0.4 0 15
- Ascorbic acid manufactured by Ebisu Chemical Co., Ltd., used after pulverization 55 parts, cellulose powders B and E obtained in Examples 2 and 5, celluloses obtained in Comparative Examples 2, 4-11, and 14-16 30 parts by weight of powders G, I to P, and S to U, croscarmellose sodium (sales from Asahi Kasei Chemicals Corporation, manufactured by Chirin Chemical Industry Co., Ltd., Kikkolate ND-2HS (trade name)) 1.5 Part by weight, 13 parts of granulated lactose (Lattose New Zealand, Super-Tab (trade name)) are placed in a 5L scale V-type mixer (Dalton), mixed for 30 minutes, and then stearate Gnesium (produced by Taihei Igaku Sangyo Co., Ltd., plant) was added in an external ratio of 2.0 parts by weight, and further mixed for 5 minutes to obtain a prescribed powder.
- the total amount of each powder charged was 2 kg.
- a rotary tableting machine manufactured by Kikusui Seisakusho Co., Ltd., Clean Press—12HUK (trade name), 12 pcs
- the prescription powder thus obtained was turned into a turntable with a rotation speed of 54rpm and a compression force of 8mm, 12R.
- Tableting was performed at 10 kN to obtain a tablet having a weight of 180 mg. Tablets 10 minutes after the start of tableting were sampled, and tablet weight, hardness, friability, tableting failure rate, and disintegration time (without disc) were measured. Table 5 shows various physical property values of the obtained tablets.
- the drug used in this formulation is relatively fluid even when pulverized. However, as the drug content increases, the fluidity of the formulation gradually deteriorates, and as the drug content increases, the variation in tablet weight decreases.
- the drugs used in this prescription are prescriptions that cause tableting problems, such as high-pressure and high-level staining and high-pressure cubbing. This is one of the examples where it is difficult to make a practical tablet as the product content increases.
- tablets with a practical hardness of 50N or more include Comparative Examples 52, 56, 59 to 63, except for Comparative Examples 62 and 63, the variation in tablet weight is 1. 8-2.6% Compared with 0.7 to 0.8% of Examples, it was very difficult to put it into practical use.
- Comparative Examples 62 and 63 have the same strength as the porous cellulose aggregate of the present invention in terms of tablet hardness and tablet weight variation, but the disintegration time is inferior at the same degree of hardness.
- the drug used in this formulation is one of the cases where water-repellent magnesium stearate has to be added in order to avoid a forceful tableting disorder that has a relatively high solubility in water. There is also. In such cases, the wettability of the tablets with water tends to decrease, and the disintegration time tends to be delayed even when the drug has high water solubility.
- the porous cellulose aggregate of the present invention has a disintegration time with the porous cellulose aggregate of Patent Document 1, particularly in the case of inhibiting water wettability of tablets, etc. during the formulation. It is clear that the difference between the two is superior to the porous cellulose aggregate of Patent Document 1.
- Cellulose particles A5g was added to 20g of a solution-like active ingredient obtained by diluting ibuprofen polyethylene glycol solution (quantity ratio 1: 5) 10 times with ethanol (Wako Pure Chemicals, special grade). Mix for 5 minutes. The obtained mixed solution was evaporated. The powder was obtained by vacuum drying using one ter. 0.2 g of the obtained powder is weighed and placed in a mortar (manufactured by Kikusui Seisakusho, using material SUS2, 3), and pressure is applied using a 0.8 cm diameter circular flat plate (manufactured by Kikusui Seisakusho, using material SUS2, 3).
- Example 13 The same procedure as in Example 13 was carried out except that cellulose particle A was changed to cellulose powder K (corresponding to Example 2 of Patent Document 2), a liquid component-containing molded article was produced, and the liquid component was leached and collapsed. Carried out. The results are shown in Table 6.
- Example 13 The same procedure as in Example 13 was carried out except that cellulose particle A was changed to cellulose powder L (corresponding to Example 2 of Patent Document 3), a liquid component-containing molded article was produced, and the liquid component was leached and collapsed. Carried out. The results are shown in Table 6.
- Example 13 The same procedure as in Example 13 was carried out except that the cellulose particles A were changed to cellulose powder M (corresponding to the example of Patent Document 4), a liquid component-containing molded product was produced, and the liquid component was leached and subjected to a collapse test. Carried out. The results are shown in Table 6.
- Example 13 The same procedure as in Example 13 was carried out except that cellulose particle A was changed to cellulose powder N (corresponding to Example 1 of Patent Document 5), a liquid component-containing molded product was produced, and the liquid component was leached and collapsed. Carried out. The results are shown in Table 6.
- Example 69 The same procedure as in Example 13 was carried out except that the cellulose particles A were changed to cellulose powder G (corresponding to Example 5 of Patent Document 9), a liquid component-containing molded article was produced, and the liquid component was leached and collapsed. Carried out. The results are shown in Table 6. [0163] (Comparative Example 69)
- Example 13 The same procedure as in Example 13 was carried out except that cellulose particle A was changed to cellulose powder S (corresponding to Example 2 of Patent Document 10), a liquid component-containing molded body was produced, the liquid component was leached, and a disintegration test was conducted. Carried out. The results are shown in Table 6.
- Cellulose particles A are used, and commercially available ibuprofen (active ingredient described as being almost insoluble in water in the 14th revision of the Japanese Pharmacopoeia) is added to polyethylene glycol (Sanyo Kasei Co., Ltd., Macrogol 400) 1 : A solution dissolved at a ratio of 5 and further diluted 10-fold with ethanol was added to cellulose particles A so as to be 10% by weight and stirred in a mortar.
- Example 14 The same procedure as in Example 14 was carried out except that the cellulose particles A were made into cellulose powder K (corresponding to Example 2 of Patent Document 2), and the molding was prepared and the liquid component on the surface of the molding was observed. The drug dissolution rate from the cylindrical molded body was measured and the disintegration was observed. The results are shown in Table 7. The leaching of the liquid component from the cylindrical molded body was not recognized, but in the dissolution test, the liquid surface floated without collapsing for 3 minutes, and the disintegration was bad.
- Example 14 The same procedure as in Example 14 was carried out except that the cellulose particles A were made into cellulose powder L (corresponding to Example 2 of Patent Document 3), and the molding was prepared and the liquid component on the surface of the molding was observed to ooze out.
- the drug dissolution rate from the cylindrical molded body was measured and the disintegration was observed.
- Table 7 The results are shown in Table 7. The leaching of the liquid component from the cylindrical molded body was not recognized, but in the dissolution test, the liquid surface floated without collapsing for 3 minutes, and the disintegration was bad.
- Example 14 Operate in the same manner as in Example 14 except that the cellulose particle A is made of cellulose powder IM (corresponding to the example of Patent Document 4).
- Preparation of a molded body and observation of liquid component leaching on the surface of the molded body The drug dissolution rate from the columnar molded body was measured and the disintegration was observed. The results are shown in Table 7. It was confirmed that the liquid component oozed out on the surface of the cylindrical molded body, and it did not become a tablet.
- Example 14 The same procedure as in Example 14 was carried out except that cellulose particles A were made into cellulose powder N (corresponding to Example 1 of Patent Document 5). The drug dissolution rate from the cylindrical molded body was measured and the disintegration was observed. The results are shown in Table 7. It is confirmed that the liquid component oozes out on the surface of the cylindrical molded body. The dissolution test was not possible.
- Example 14 The same procedure as in Example 14 was carried out except that the cellulose particles A were changed to cellulose powder G (corresponding to Example 5 of Patent Document 9), production of a molded body and observation of leaching of liquid components on the surface of the molded body, The drug dissolution rate from the cylindrical molded body was measured and the disintegration was observed. The results are shown in Table 7. It was confirmed that the liquid component oozed out on the surface of the cylindrical molded body, and it did not become a tablet.
- Example 14 The same procedure as in Example 14 was conducted except that cellulose particle A was changed to cellulose powder S (corresponding to Example 2 of Patent Document 10), and a molded body was produced and observation of liquid components on the surface of the molded body was observed. The drug elution rate from the cylindrical molded body was measured and the disintegration was observed. The results are shown in Table 7. The extruding of liquid components from the cylindrical molded body was a powerful force S, and in the elution test, it did not collapse for 3 minutes, and the disintegration was bad.
- Example 15 Cellulose particles Alg in 10 mL of a solution of ethenzamide (manufactured by API Co., Ltd., powder grade pulverized with a small pulverizer) with ethanol (Wako Pure Chemicals, reagent grade) at a ratio of 5:95 And stirred with a magnetic stirrer for 3 minutes. The obtained dispersion was introduced into an evaporator and completely desolvated to obtain a powder sample.
- ethenzamide manufactured by API Co., Ltd., powder grade pulverized with a small pulverizer
- ethanol Waako Pure Chemicals, reagent grade
- Cellulose particles A are used, and commercially available ibuprofen (active ingredient described as ⁇ almost insoluble in water according to the 14th revision of the Japanese Pharmacopoeia) is added to ethanol (made by Wako Pure Chemicals, reagent grade) at a ratio of 1: 5.
- ethanol made by Wako Pure Chemicals, reagent grade
- the liquid dissolved in was added to cellulose particles A so as to be 10% by weight and stirred in a mortar.
- the obtained wet mixed powder was completely removed of ethanol using an evaporator to obtain a dry powder.
- 0.2 g of the obtained dry powder is weighed and placed in a mortar (manufactured by Kikusui Seisakusho, using material SUS2, 3), and a 0.8 mm diameter circular flat bowl (manufactured by Kikusui Seisakusho, material SUS 2 and 3) until the pressure reaches lOOMPa (product name, PCM-1A used, manufactured by Aikoichi Engineering Co., Ltd., compression speed is lcmZ) and held at the target pressure for 10 seconds. I took it out. 100 pieces of the obtained cylindrical molded body were put in a bottle and stored for 2 weeks at 40 ° C in a sealed cap system, and clouding of the bottle was observed.
- lOOMPa product name, PCM-1A used, manufactured by Aikoichi Engineering Co., Ltd., compression speed is lcmZ
- Example 16 Except that the cellulose particle A is cellulose powder K (corresponding to Example 2 of Patent Document 2), the same operation as in Example 16 was carried out to produce a cylindrical molded body, observation of the cloudiness of the bottle after storage in a sealed bottle, and elution Tests and observation of disintegration were performed. The results are shown in Table 9. No cloudiness was observed in the bottle. The tablet did not disintegrate in 1 minute and was floating on the liquid surface.
- Example 16 Except that the cellulose particle A is cellulose powder L (corresponding to Example 2 of Patent Document 3), the same operation as in Example 16 was carried out to produce a cylindrical molded body, and observed and eluted the bottle after it was sealed and stored Tests and observation of disintegration were performed. The results are shown in Table 9. No cloudiness was observed in the bottle. The tablet did not disintegrate in 1 minute and was floating on the liquid surface.
- Example 16 Except that the cellulose particle A is cellulose powder M (corresponding to the example of Patent Document 4), the same operation as in Example 16 was carried out to produce a cylindrical molded body, observation of cloudiness of the bottle after storage in a sealed bottle, and dissolution test The disintegration was observed. The results are shown in Table 9. The sublimated ibuprofen recrystallized inside the bottle wall, which confirmed the cloudiness of the bottle.
- Acetoaminophen (powder type made by API Co., Ltd. is used after pulverizing with a small pulverizer.
- the average particle size of the obtained atoaminophene is 16 ⁇ m) 20g, talc (Wako Pure Chemical Industries, Ltd.) 2) Put 2 Og in a polyethylene bag and shake and mix for 3 minutes by hand.
- Acetoaminophen (Apia Co., Ltd. powder type was used after being pulverized with a small pulverizer.
- the average particle size of Acetoaminophene was 16 / zm) 20g, Talc (Wako Pure Chemical ( Co., Ltd.) 20 g in a polyethylene bag and mixed by shaking for 3 minutes by hand, 40 g of the mixed powder, 100 mesh lactose (DMV Co., Ltd., Pharmatose 100M (trade name)) 952 g, Japan 408 g of pharmacopoeia corn starch (manufactured by Nissui Chemical Co., Ltd.) and porous cellulose particles A600 g were put into a 5 liter V-type mixer (Dalton) and mixed for 30 minutes.
- the final prescription powder is turned into a rotary tableting machine (manufactured by Kikusui Seisakusho, LIBRA-II (trade name), 3 Using a 6-spindle rotary disk diameter of ⁇ 410mm), using a 8mm diameter, 12R punch, tableted with a turntable speed of 50rpm (hours 108,000 tablets) and a compression force of 10kN to obtain a tablet with a weight of 180mg . Tablets 10 minutes after the start of tableting were sampled, and tablet weight variation, hardness, and friability were measured. Table 10 shows the physical properties of the obtained tablets.
- Example 17 The same operation as in Example 17 was performed except that the porous cellulose particles A of Example 17 were changed to cellulose powder K, ⁇ , ⁇ , or G. The results are shown in Table 10.
- Acetoaminophen (Apiai Co., Ltd. powder type is used after pulverizing with a small pulverizer.
- the average particle size of the obtained acetominophen is 16 g), 200g, granulated lactose (Asahi Kasei Chemicals Co., Ltd.) ) Sales, Manufactured by New Zealand Fontera, SUPER— TAB (trade name)) 760 g, Croscarmellose sodium (Asahi Kasei Chemicals Co., Ltd., manufactured by Nichirin Chemical Industries, Ltd., Kikkolate ND— 2HS (trade name)) 40 g
- acetoaminophen (Apia Co., Ltd. powder type is used after pulverizing with a small pulverizer.
- the average particle size of the obtained acetominophen is 16 m) 200 g, granulated lactose (Asahi Kasei Chemicals) Sold by Co., Ltd., manufactured by New Zealand Fontera Co., Ltd., SUPER— TAB (trade name)) 7 60 g, croscarmellose sodium (sales from Asahi Kasei Chemicals Co., Ltd., manufactured by Nichirin Chemical Industries, Ltd., Kikkolate ND— 2HS (trade name) ) 40 g and 100 g of porous cellulose particles A100 g were put into a V-type mixer (made by Dalton) having a capacity of 5 liters and mixed for 30 minutes.
- V-type mixer made by Dalton
- the final prescription powder is rotated using a rotary tableting machine (manufactured by Kikusui Seisakusho Co., Ltd., LIBRA-II (trade name), 3 6-spindle rotating disk diameter ⁇ 410mm), using a 8mm diameter, 12R punch. Tablets of several 50rpm (time 108,000 tablets), compression force 10kN, weight 180mg An agent was obtained. Tablets 10 minutes after the start of tableting were sampled, and tablet weight variation, hardness, and friability were measured. Table 10 shows the physical properties of the obtained tablets.
- Example 18 The same operation as in Example 18 was performed except that the porous cellulose particles A of Example 18 were changed to cellulose powder K, ⁇ , ⁇ , or G. The results are shown in Table 10.
- Acetoaminophene (Apia Co., Ltd. powder type is used after being pulverized with a small pulverizer. The average particle size of the obtained acetominophen is 16 ⁇ m) is used as a component model C having poor fluidity. The angle of repose was measured and found to be 55 °.
- acetoaminophen (Apia Co., Ltd. powder type is used after pulverization with a small pulverizer.
- the average particle size of acetoaminophen obtained is 16 m)
- A18000 g of particles A were charged into a 5 liter V-type mixer (Dalton) and mixed for 30 minutes.
- 10 g each of light anhydrous caustic acid and magnesium stearate (0.5% each in an external ratio) were added to the prescription powder and mixed for another 5 minutes.
- the final prescription powder is rotated using a rotary tableting machine (manufactured by Kikusui Seisakusho Co., Ltd., LIBRA-II (trade name), 3 6-piece rotating disk diameter ⁇ 410 mm) using a 8 mm diameter, 12R punch. Tableting was performed at several 50 rpm (time: 108,000 tablets) at a compression force of 2 kN to obtain a tablet having a weight of 180 mg. Tablets 10 minutes after the start of tableting were sampled, and tablet weight variation, hardness, and friability were measured. Table 10 shows the physical properties of the obtained tablets.
- Example 19 The same operation as in Example 19 was performed except that the porous cellulose particles A of Example 19 were changed to cellulose powder K, ⁇ , ⁇ , or G. The results are shown in Table 10.
- the highly fluid porous cellulose aggregate excellent in moldability and disintegration of the present invention, and the molded composition containing the cell mouth particles and one or more active ingredients have a crystal form of I type. Yes, has a porous structure with primary particles agglomerated, has a specific surface area within a specific range, rapidly disintegrates in water with a large pore volume within the particle, and has a low repose angle and high fluidity porous cellulose aggregation And a molded body composition containing cellulose particles and one or more active ingredients, and can be suitably used mainly in the field of pharmaceuticals.
- FIG. 1 is a pore distribution diagram of a porous cellulose aggregate of the present invention (Example 1) measured by mercury porosimetry.
- FIG. 2 is a pore distribution diagram of cellulose powder H (Comparative Example 3) measured by mercury porosimetry.
- FIG. 3 is an electron micrograph of cellulose particles K (Comparative Example 6) at a magnification of 250 times.
- FIG. 4 is an electron micrograph of cellulose powder M (Comparative Example 8) at a magnification of 250 times.
- FIG. 5 is an electron micrograph of cellulose particles K (Comparative Example 6) at a magnification of 1500 times. From the photograph, it can be seen that the partition walls are film-like and the boundaries of the primary particles are unclear.
- FIG. 6 Electron microscope cross-sectional image of porous cellulose aggregate of the present invention (Example 1). Is true.
- FIG. 7 is a cross-sectional photograph of particles of cellulose powder M (Comparative Example 8) taken with an electron microscope.
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Abstract
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CN2006800225598A CN101203553B (zh) | 2005-04-22 | 2006-04-21 | 多孔纤维素聚集体及其成型组合物 |
BRPI0608113A BRPI0608113B8 (pt) | 2005-04-22 | 2006-04-21 | agregado de celulose porosa, método para produzir o mesmo, e, composição de compactação |
JP2007514669A JP5240822B2 (ja) | 2005-04-22 | 2006-04-21 | 多孔質セルロース凝集体及びその成型体組成物 |
US11/918,979 US8153157B2 (en) | 2005-04-22 | 2006-04-21 | Porous cellulose aggregate and molding composition thereof |
EP06745545.1A EP1873196B1 (en) | 2005-04-22 | 2006-04-21 | Porous cellulose aggregate and molding composition thereof |
US12/926,318 US8771742B2 (en) | 2005-04-22 | 2010-11-09 | Porous cellulose aggregate and molding composition thereof |
US13/317,943 US20120045636A1 (en) | 2005-04-22 | 2011-11-01 | Porous cellulose aggregate and molding composition thereof |
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US11/918,979 A-371-Of-International US8153157B2 (en) | 2005-04-22 | 2006-04-21 | Porous cellulose aggregate and molding composition thereof |
US12/926,318 Division US8771742B2 (en) | 2005-04-22 | 2010-11-09 | Porous cellulose aggregate and molding composition thereof |
US13/317,943 Division US20120045636A1 (en) | 2005-04-22 | 2011-11-01 | Porous cellulose aggregate and molding composition thereof |
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- 2006-04-21 EP EP06745545.1A patent/EP1873196B1/en active Active
- 2006-04-21 CN CN2006800225598A patent/CN101203553B/zh active Active
- 2006-04-21 BR BRPI0608113A patent/BRPI0608113B8/pt active IP Right Grant
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Also Published As
Publication number | Publication date |
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JPWO2006115198A1 (ja) | 2008-12-18 |
EP1873196A1 (en) | 2008-01-02 |
EP1873196A4 (en) | 2010-03-17 |
US20090022791A1 (en) | 2009-01-22 |
US8153157B2 (en) | 2012-04-10 |
BRPI0608113B8 (pt) | 2021-07-27 |
JP5240822B2 (ja) | 2013-07-17 |
CN101203553A (zh) | 2008-06-18 |
EP1873196B1 (en) | 2016-04-13 |
TWI313278B (en) | 2009-08-11 |
BRPI0608113B1 (pt) | 2018-08-07 |
US8771742B2 (en) | 2014-07-08 |
US20110064805A1 (en) | 2011-03-17 |
CN101203553B (zh) | 2011-05-18 |
BRPI0608113A2 (pt) | 2010-11-03 |
US20120045636A1 (en) | 2012-02-23 |
TW200702365A (en) | 2007-01-16 |
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