WO2010095578A1 - 粘着剤組成物及び粘着テープ - Google Patents
粘着剤組成物及び粘着テープ Download PDFInfo
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- WO2010095578A1 WO2010095578A1 PCT/JP2010/052145 JP2010052145W WO2010095578A1 WO 2010095578 A1 WO2010095578 A1 WO 2010095578A1 JP 2010052145 W JP2010052145 W JP 2010052145W WO 2010095578 A1 WO2010095578 A1 WO 2010095578A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2453/00—Presence of block copolymer
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- 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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2883—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer of diene monomer [e.g., SBR, SIS, etc.]
Definitions
- the present invention relates to an adhesive composition and an adhesive tape in which the adhesive composition layer is provided on a substrate. More specifically, the present invention relates to a pressure-sensitive adhesive composition excellent in coating suitability, having good adhesion to the skin and self-back surface adhesion, little skin irritation, and reduced pain during peeling, and the pressure-sensitive adhesive.
- the present invention relates to an adhesive tape having a composition layer.
- the pressure-sensitive adhesive tape of the present invention is suitable for use as an external skin patch such as a taping tape.
- ⁇ Adhesive tapes have been used as medical adhesive products such as adhesive bandages, surgical adhesive tapes, and therapeutic adhesive tapes using their adhesive strength.
- taping tape is an adhesive tape made for the purpose of fixing soft tissue such as joints, muscles, ligaments, and tendons.
- taping is performed for the purpose of injury prevention, first aid, and recurrence prevention.
- Injury prevention is performed to prevent injury by taping before competition or exercise.
- Taping for first aid is performed for the purpose of first aid for injury caused by exercise.
- Taping for preventing recurrence is performed in order not to repeat the same injury again.
- Sports taping prevents injury by wrapping taping tape around joints such as fingers, hands, and feet, muscles, ligaments, tendons, etc. to reinforce areas that are susceptible to injury or restrict their movement. , Preventing recurrence. Sprains, ligament damage, dislocation, and the like are obstacles that occur when the site exceeds the normal range, and it is effective to limit the movable range by taping. Taping can reinforce and protect past injury sites, thereby reducing the fear of injury.
- TAPING is expanding not only in the sports field, but also in the taping field in everyday life where various pains such as back pain, tight waist, joint pain due to injury, and hallux valgus pain are prevented and softened. Taping is often performed as an auxiliary means of rehabilitation for the purpose of relieving pain by supporting an injured site during a functional recovery period.
- the taping tape generally has a layer structure in which an adhesive layer is provided on one side of a base material, and is roughly classified into a non-stretchable tape and a stretchable tape.
- the taping tape is required to have high adhesion to the skin.
- taping tape is required not to cause pain when it is peeled from the skin.
- the adhesive strength of the taping tape is too great, it becomes easy to cause blurring and blood circulation injury, and strong pain tends to occur at the time of peeling from the skin. If the adhesive strength of the taping tape is too small, the applied tape is easy to peel off due to intense movement of the application site due to exercise or the like, and the application site cannot be protected. In order to adjust the adhesive strength of the taping tape, it is considered that an adhesive composition exhibiting an appropriate adhesive strength may be selected. However, the peeling pain from the skin does not always increase in proportion to the adhesive strength of the taping tape. Therefore, it has been a difficult task to satisfy the demands for both high adhesion to skin and relief of peeling pain.
- the taping tape is required not to leave an adhesive on the skin surface when it is peeled off from the skin. Residue of the adhesive on the skin surface (hereinafter referred to as “glue residue”) not only gives discomfort, but also requires post-treatment for its removal.
- the adhesive residue phenomenon does not appear in proportion to the adhesive strength, and is greatly influenced by the adhesive composition such as adhesion to the substrate (anchoring property) and cohesive strength of the adhesive.
- taping tape is required to be capable of being overlaid.
- taping generally, a single piece of taping tape is wound around an ankle or the like, or a plurality of taping tape pieces are stacked and pasted.
- the taping tape is not only excellent in adhesiveness to the skin, but also on the back surface of the tape itself (the surface on the side where the adhesive layer of the base material is not provided) so that it can be overwrapped. It is required to be excellent in adhesiveness (hereinafter referred to as “self-back-side adhesiveness”).
- a cloth base material having flexibility and air permeability is generally used as a base material for the taping tape.
- a method of increasing the adhesive force of the adhesive layer or softening the adhesive composition to reduce the cohesive force is effective.
- the adhesive strength becomes too large, the peeling pain from the applied skin becomes strong.
- the pressure-sensitive adhesive composition is too soft, adhesive residue on the skin surface when peeled off tends to occur.
- the taping tape is required to have conflicting characteristics that both the adhesiveness to the skin and the adhesiveness to the back surface are increased, the peeling pain is small, and the adhesive residue is small.
- the adhesive strength is set large.
- a taping tape is peeled off, it is strongly applied to the skin, so that the peeling is heavy, and the body hair is involved at the time of peeling or the skin is peeled off, which is very painful.
- a method of taping after applying an under tape to the skin in advance is known, but the operation is complicated.
- the taping tape is required to have conflicting characteristics that both the adhesiveness to the skin and the adhesiveness to the back surface are increased, the peeling pain is small, and the adhesive residue is small. Furthermore, in order to produce a taping tape, it is necessary to provide a pressure-sensitive adhesive composition layer on a substrate. For this purpose, the pressure-sensitive adhesive composition to be used is required to have excellent coating suitability.
- Patent Document 1 an oxygen-reactive exothermic composition is stored on the surface of the heat-seal resin layer of a laminated sheet of a material layer having an oxygen gas barrier performance and a resin layer having a heat-seal performance.
- the laminated sheet having the same configuration as the laminated sheet is covered with the heat seal resin layer on the inner surface, and the periphery of the two laminated sheets is heat-sealed to the back surface.
- a medical pressure-sensitive adhesive tape coated with a pressure-sensitive adhesive containing a drug Although the medical adhesive tape can be used for warming therapy, the thickness of the multilayer laminated sheet is large, so that it is difficult to detach and attach clothes at the time of application. It is difficult to apply them in a stacked manner or in a spiral manner, and the taping inherent function of fixing the joint cannot be exhibited.
- Patent Document 2 proposes a pressure-sensitive adhesive composition that can be applied to human skin in which the weight ratio of solid rubber to liquid rubber is 1: 0.5 to 1: 7. Has been.
- the solid rubber include SBR and ABA type block copolymer elastomers.
- the liquid rubber include liquid isoprene and liquid isoprene-styrene.
- the pressure-sensitive adhesive composition described in Patent Document 2 attempts to develop adhesive properties only by using a solid rubber and a liquid rubber together without adding a tackifier resin to a solid rubber component at room temperature. Is.
- Patent Document 2 since the pressure-sensitive adhesive composition disclosed in Patent Document 2 contains a large amount of liquid rubber, it has a sticky feeling, the cohesive force becomes too low, and it becomes too soft to cause cohesive failure or covering. There are disadvantages such as the adhesive residue on the body being liable to occur.
- Patent Document 3 describes 30 to 170 parts by weight of a rubber component that is liquid at room temperature and 50 to 400 parts by weight of a tackifier with respect to 100 parts by weight of a rubber component that is solid at room temperature.
- a pressure-sensitive adhesive composition containing the above is disclosed.
- the solid rubber component include an AB type or ABA type block copolymer
- examples of the liquid rubber component include liquid polyisoprene and liquid polybutadiene.
- Tackifiers include terpene, rosin and other natural resin systems; aliphatic, aromatic, petroleum resin, alkylphenol, xylene, coumarone indene and other synthetic resin systems. Has been. An olefin film is shown as the support film.
- the pressure-sensitive adhesive composition disclosed in Patent Document 3 has a hard sticky feeling and a heavy peel feeling when the solid rubber at room temperature is an ABA type block copolymer, which causes rash and the like. Easy to cause skin irritation.
- the pressure-sensitive adhesive composition is applied to use as an emergency bandage or a dressing material, and is not applied to a taping tape.
- the pressure-sensitive adhesive tape provided with the pressure-sensitive adhesive composition layer on the substrate is unsatisfactory in use feeling when used as a taping tape, such as insufficient cohesive force and adhesive residue.
- the pressure-sensitive adhesive composition disclosed in Patent Document 3 is applied with a method in which the organic solvent solution is applied onto a separator and dried to form a pressure-sensitive adhesive layer, and the coating suitability is unsatisfactory. is there.
- Patent Document 4 contains polyisoprene, styrene-isoprene-styrene copolymer, and solid polyisobutylene in a weight ratio of 10 to 60:10 to 50:20 to 60 Furthermore, an adhesive composition containing 1 to 30 parts by weight of a non-solid isobutylene polymer and a tackifier with respect to a total of 100 parts by weight of these three components is disclosed. However, the pressure-sensitive adhesive tape provided with the pressure-sensitive adhesive composition layer on the base material still has a large pain at the time of peeling in addition to insufficient adhesive strength.
- Patent Document 5 describes a functional group modification to a rubber-based pressure-sensitive adhesive composed of an elastomer component made of natural rubber and / or a diene-based synthetic rubber, a tackifier resin, and a hydrophilic polymer component.
- a rubber-based pressure-sensitive adhesive composition containing a liquid rubber component in a proportion of 10 to 40% by mass is disclosed.
- the pressure-sensitive adhesive composition disclosed in Patent Document 5 and the pressure-sensitive adhesive tape using the pressure-sensitive adhesive composition are applied to uses such as an emergency bandage and a dressing material, and are not used as a taping tape. It does not have the characteristics required for taping tape.
- Patent Document 6 a plaster layer containing a rubber-based adhesive, a tackifier, a liquid additive, and a styrene-based thermoplastic elastomer is provided on at least one side of a support layer.
- An adhesive patch is disclosed.
- the patch is characterized by excellent balance of cold flow suppression, cohesiveness, and adhesiveness even when a relatively large amount of liquid additive is blended.
- the pressure-sensitive adhesive composition disclosed in Patent Document 6 and a pressure-sensitive adhesive tape using the same are not used as taping tapes and do not have various properties required for taping tapes.
- Patent Document 6 shows that an organic solvent solution of the pressure-sensitive adhesive composition was applied onto a release liner to form a pressure-sensitive adhesive composition layer, and is not excellent in coating suitability.
- An object of the present invention is to provide a pressure-sensitive adhesive composition having excellent coating suitability, good adhesion to the skin and self-back surface adhesion, little skin irritation, and reduced pain during peeling, and the pressure-sensitive adhesive composition It is providing the adhesive tape which has a layer.
- an object of the present invention is to provide a pressure-sensitive adhesive composition that is excellent in the above-mentioned various properties and is suitable for taping tape applications, and a pressure-sensitive adhesive tape having the pressure-sensitive adhesive composition layer.
- the present inventor contains polyisoprene, styrene-isoprene-styrene block copolymer, and polyisobutylene in a specific mass ratio as a solid rubber component at room temperature, and The present inventors have found that the above-mentioned problems can be solved by a pressure-sensitive adhesive composition containing polyisobutylene that is liquid at normal temperature, a tackifier, and a plasticizer that is liquid at normal temperature in a specific ratio.
- the tackifier it is preferable to use a terpene resin and an aliphatic hydrocarbon resin in combination at a specific mass ratio. It is preferable that the liquid plasticizer contains liquid paraffin.
- the adhesive composition of the present invention can contain a warm point stimulant or a cold point stimulant as a local stimulant.
- the pressure-sensitive adhesive composition of the present invention is excellent in coating suitability, and is applied on a substrate or a release liner by a calendar coating method or a hot melt coating method without using a solution coating method. A composition layer can be formed. The present invention has been completed based on these findings.
- the polyisoprene is 10% by mass or more and less than 50% by mass
- the styrene-isoprene-styrene block copolymer is more than 50% by mass and 90% by mass or less
- the polyisobutylene 0 1 to 30 parts by weight of polyisobutylene that is liquid at room temperature, 50 to 120 parts by weight of a tackifier, and plastic that is liquid at room temperature with respect to 100 parts by weight of the solid rubber component.
- a pressure-sensitive adhesive composition containing 1 to 40 parts by mass of the agent is provided.
- an adhesive tape in which the adhesive composition layer is provided on a substrate.
- the present invention it is possible to provide a pressure-sensitive adhesive composition having an excellent balance between adhesive strength and cohesive strength, good self-back surface adhesive strength, reduced peeling pain, and excellent coating suitability.
- the pressure-sensitive adhesive composition of the present invention is excellent as a medical pressure-sensitive adhesive tape and is particularly suitable for taping tape applications.
- the rubber component that is solid at normal temperature used in the present invention is a rubber component that does not exhibit fluidity or semi-fluidity at normal temperature (20 ⁇ 15 ° C.) and can maintain a solid shape.
- the pressure-sensitive adhesive composition of the present invention comprises, as a solid rubber component at room temperature, a polyisoprene of 10% by weight to less than 50% by weight, a styrene-isoprene-styrene block copolymer of more than 50% by weight and 90% by weight or less, and polyisobutylene. 0 to 30% by mass (the total of the three components is 100% by mass).
- the polyisoprene used in the present invention is a synthetic polyisoprene rubber (cis-1,4-polyisoprene).
- Polyisoprene is a high molecular weight polymer, and is a rubber that shows a solid state at room temperature.
- the Mooney viscosity (ML 1 + 4 , 100 ° C.) of polyisoprene is usually 40 to 96, preferably 50 to 90.
- the number average molecular weight of polyisoprene is usually in the range of 100,000 to 2,500,000, preferably 500,000 to 2,000,000.
- the number average molecular weight is a value measured as a standard polystyrene equivalent value by gel permeation chromatography (GPC).
- Examples of commercially available products of polyisoprene include IR2200 manufactured by JSR Corporation; Nipol IR2200, Nipol IR2200L, Nipol IR2205 (registered trademark) manufactured by ZEON Corporation; IR-307 manufactured by Kraton Polymer Japan Co., Ltd. IR-310; manufactured by Kuraray Co., Ltd .; These can be used alone or in combination of two or more.
- the styrene-isoprene-styrene block copolymer used in the present invention generally has a styrene content of 10 to 30% by mass and a melt flow rate (measured according to JIS K7210 at a temperature of 200 ° C. and a load of 5 kg) of 1 to 20 g. / A thermoplastic elastomer that is solid at room temperature for 10 minutes.
- the number average molecular weight of the styrene-isoprene-styrene block copolymer determined by the GPC method is in the range of 45,000 to 400,000.
- Examples of commercially available styrene-isoprene-styrene block copolymers include Clayton D1107CP, D1107CU, D1161JP (registered trademark) manufactured by Clayton Polymer Japan; SIS5000, SIS5002 manufactured by JSR; Quintac 3421, 3460 manufactured by Nippon Zeon Co., Ltd. , 3520, 3530, 3620, 3570C (registered trademark); These can be used alone or in combination of two or more.
- the solid polyisobutylene used in the present invention at normal temperature is an elastomer having a high molecular weight and elasticity.
- the viscosity average molecular weight determined based on the relationship between the intrinsic viscosity [ ⁇ ] in diisobutylene and the molecular weight of solid polyisobutylene is usually 200,000 to 1,500,000, preferably 300,000 to 1,300, Within the range of 000.
- Examples of commercially available solid polyisobutylene include: Opanol B100 (registered trademark) manufactured by BASF; Vistanex MML-80, Vistanex MML-100, Vistanex MML-140 (registered trademark) manufactured by ExxonMobil; Can be mentioned. These can be used alone or in combination of two or more.
- the pressure-sensitive adhesive composition of the present invention comprises, as a solid rubber component, a polyisoprene of 10% by weight to less than 50% by weight, a styrene-isoprene-styrene block copolymer of more than 50% by weight and 90% by weight or less, and polyisobutylenes 0-30.
- the content of styrene-isoprene-styrene block copolymer is high. Therefore, the pressure-sensitive adhesive composition of the present invention is suitable for coating by heat melting. Examples of the coating method of the pressure-sensitive adhesive composition of the present invention include a hot melt method and a calendar method.
- the cohesive strength of the pressure-sensitive adhesive composition can be reduced by using a combination of styrene-isoprene-styrene block copolymer having strong cohesive force and high molecular weight solid polyisobutylene in a specific ratio. This improves the amount of biting of the pressure-sensitive adhesive composition into the unevenness of the skin. Increasing the proportion of styrene-isoprene-styrene block copolymer tends to increase the cohesive force of the pressure-sensitive adhesive composition and become hard, and increasing the proportion of polyisoprene and solid polyisobutylene tends to become softer. is there.
- the pressure-sensitive adhesive composition by including polyisoprene rubber in the pressure-sensitive adhesive composition, it is possible to improve the self-rear surface adhesive strength and skin adhesive force of the pressure-sensitive adhesive tape obtained using the pressure-sensitive adhesive composition.
- the adhesive strength of the pressure-sensitive adhesive composition can be controlled within a desired range by appropriately blending low molecular weight liquid polyisobutylene and a tackifier. Therefore, it is preferable to determine the ratio of the rubber component that is solid at room temperature from the viewpoint of highly balancing various properties such as adhesive properties, processability, and cohesive strength.
- the proportion of the rubber component that is solid at normal temperature is (1) 15% by weight or more and less than 50% by weight of polyisoprene, more than 50% by weight of styrene-isoprene-styrene block copolymer, and 85% by weight or less of polyisobutylene.
- Polyisoprene is 17% by mass or more and less than 50% by mass
- styrene-isoprene-styrene block copolymer is more than 50% by mass and 83% by mass or less
- polyisobutylene is 0 to 23% by mass.
- (3) 18-49% by mass of polyisoprene, 51-82% by mass of styrene-isoprene-styrene block copolymer, and 0-20% by mass of polyisobutylene are particularly preferable.
- the rubber component that is solid at room temperature may be composed of two components of polyisoprene and a styrene-isoprene-styrene block copolymer.
- the proportion thereof is obtained by removing polyisobutylene from the proportion of the three components, and (1) 10% by mass or more of polyisoprene to 50% by mass Less than 50% by weight, and styrene-isoprene-styrene block copolymer more than 50% by weight and less than 90% by weight, (2) preferably, 15% by weight to less than 50% by weight polyisoprene, and styrene-isoprene-styrene block copolymer More than 50% by weight and 85% by weight or less, more preferably (3), more preferably 17% by weight to less than 50% by weight of polyisoprene, and styrene-isoprene-styrene block copolymer
- the proportion of polyisobutylene that is solid at normal temperature is preferably 1 to 30% by mass, more preferably 2 to 25% by mass, and even more preferably 5 to 5%. It is in the range of 23% by weight, particularly preferably 7 to 20% by weight (the total of the three components is 100% by weight). In many cases, good results can be obtained when the proportion of polyisobutylene solid at room temperature is 8 to 20% by mass.
- the proportion of polyisoprene is too small and the proportion of styrene-isoprene-styrene block copolymer is too large, the pressure-sensitive adhesive composition becomes too hard and adversely affects the adhesive properties and feeling of use of the adhesive tape.
- the proportion of polyisoprene is too small, the self-back surface adhesive strength of the adhesive tape and the adhesive strength to the skin tend to decrease.
- the pressure-sensitive adhesive composition can be softened, and a soft sticking feeling and peeling feeling can be obtained.
- the ratio of solid polyisobutylene is too small, the function accompanying use of solid polyisobutylene cannot be obtained. If the proportion of solid polyisobutylene is too large, the proportion of polyisoprene and / or styrene-isoprene-styrene block copolymer will be too small, and the adhesive properties and cohesive strength will be reduced.
- the pressure-sensitive adhesive composition of the present invention contains the above-described solid rubber component with a specific proportion of liquid polyisobutylene at normal temperature, a tackifier, and a plasticizer that is liquid at normal temperature.
- Various properties such as peelability, self-back surface adhesive strength, self-back surface adhesiveness, and peeling pain can be comprehensively improved. Since the pressure-sensitive adhesive composition of the present invention is excellent in the above properties, it can be suitably applied to medical pressure-sensitive adhesive tapes such as taping tapes.
- the polyisobutylene that is liquid at room temperature used in the present invention is usually a viscous liquid at room temperature (20 ⁇ 15 ° C.), but it is fluid or semi-fluid at room temperature and exhibits an amorphous shape and is constant.
- the viscosity average molecular weight determined by the Flory method or FCC method (FDA) determined based on the relationship between the intrinsic viscosity [ ⁇ ] of liquid polyisobutylene in diisobutylene and the molecular weight is usually 30,000 to 100,000, preferably 35, It is within the range of 000 to 90,000, particularly preferably 40,000 to 70,000.
- a commercial item can be used as such a low molecular weight and liquid polyisobutylene.
- liquid polyisobutylene for example, Vistanex LM-MS, Vistanex LM-MH (registered trademark) manufactured by ExxonMobil; Opanol B10SFN, Opanol B12SFN, Opanol B13SFN (registered trademark) manufactured by BASF; Tetrax 4T, Tetrax 5T, Tetrax 6T (registered trademark) manufactured by Petrochemical Co., Ltd .; High Mall 4H, High Mall 5H, High Mall 5.5H, High Mall 6H (registered trademark) manufactured by Nippon Petrochemical Co., Ltd .; Is mentioned. These can be used alone or in combination of two or more.
- the polyisobutylene that is liquid at room temperature is used in a proportion of 1 to 30 parts by weight, preferably 3 to 28 parts by weight, more preferably 5 to 25 parts by weight, based on 100 parts by weight of the rubber component that is solid at room temperature.
- liquid polyisobutylene and a tackifier in the pressure-sensitive adhesive composition of the present invention, the adhesive strength against bakelite and probe tack can be highly balanced, thereby exhibiting good adhesive properties to the skin. it can. If the ratio of the liquid polyisobutylene is too large, the adhesive force and tack can be increased, but the cohesive force is reduced.
- terpene resins and aliphatic hydrocarbon resins are preferable.
- the mass ratio of the terpene resin and the aliphatic hydrocarbon resin is preferably in the range of 1: 1 to 5: 1.
- the softening point of the terpene resin and the aliphatic hydrocarbon resin is preferably in the range of 65 to 130 ° C.
- terpene resin examples include YS Resin PX and YS Resin PXN (registered trademark) manufactured by Yasuhara Chemical Co .; and Picolite (registered trademark) manufactured by Rika Finetech.
- aliphatic hydrocarbon resin examples include Quinton A100, Quinton B170, Quinton K100, Quinton M100, Quinton R100, and Quinton C200S (registered trademark) manufactured by ZEON Corporation. These can be used alone or in combination of two or more.
- tackifiers can be used in combination as desired.
- Other tackifiers include, for example, rosin resins (Ester gum (registered trademark), Harima Kasei Harrier Star (registered trademark), Harima Kasei Haritac (registered trademark)) manufactured by Arakawa Chemical Industries, phenol resins, xylene Resin, alkylphenol resin, coumarone indene resin and the like. These can be used alone or in combination of two or more.
- the use ratio of the other tackifier is preferably 50 parts by mass or less, more preferably 30 parts by mass or less, and particularly preferably 20 parts by mass or less with respect to 100 parts by mass of the solid rubber component.
- the proportion of the tackifier is 50 to 120 parts by mass, preferably 55 to 110 parts by mass, more preferably 60 to 100 parts by mass, and particularly preferably 65 to 90 parts by mass with respect to 100 parts by mass of the rubber component solid at normal temperature. Within the range of parts by mass.
- the ratio of the tackifier is too small, the adhesive force and tack of the adhesive composition tend to decrease.
- the adhesive strength and tack improve as the proportion of the tackifier increases, if it increases excessively, the adhesive properties at low temperatures tend to deteriorate and peeling from the skin tends to be painful.
- a plasticizer that is liquid at room temperature exhibits an excellent plasticizing action.
- liquid plasticizer liquid paraffin is particularly suitable in terms of excellent compatibility with the solid rubber component.
- the liquid plasticizer plays a role of controlling the viscoelasticity of the pressure-sensitive adhesive by adjusting the ratio to the solid rubber component, increasing the adhesiveness to the skin, and reducing pain at the time of peeling.
- the pressure-sensitive adhesive composition of the present invention preferably contains substantially no solid plasticizer (solid plasticizer) at room temperature.
- liquid plasticizers can be used for the purpose of improving transdermal absorbability and storage stability and enhancing drug solubility in the adhesive composition.
- liquid plasticizers other than liquid paraffin include fatty acid esters composed of higher fatty acids having 12 to 16 carbon atoms such as isopropyl myristate, ethyl laurate, and isopropyl palmitate and lower monohydric alcohols having 1 to 4 carbon atoms; carbon Fatty acids of several 8 to 10; glycols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, and polypropylene glycol; fats and oils such as olive oil, castor oil, squalene, and lanolin; ethyl acetate, ethyl alcohol, dimethyldecyl Sulfoxide, decylmethyl sulfoxide, dimethyl sulfoxide, dimethylformamide, dimethylacetamide, dimethyllaurylamide, dodecylpyrrolidone, isosorbitol, oleyl alcohol Organic solvents such as lauric acid, liquid surfactants; ethoxy
- liquid plasticizers can be used alone or in combination of two or more.
- glycerin esters are preferable, and medium-chain fatty acid triglycerides that are esters of 8 to 10 fatty acids and glycerin are more preferable.
- the medium chain fatty acid triglyceride include tri (caprylic acid / capric acid) glyceryl.
- liquid paraffin and a combination of other liquid plasticizers are used as the liquid plasticizer.
- the ratio of liquid paraffin in the liquid plasticizer is preferably 40% by mass or more, more preferably 45% by mass or more, and the upper limit is preferably Is 90% by mass.
- the ratio of the two is particularly preferably in the range of 1: 1 to 5: 1.
- the liquid plasticizer is 1 to 40 parts by weight, preferably 3 to 38 parts by weight, more preferably 5 to 35 parts by weight, and particularly preferably 8 to 33 parts by weight with respect to 100 parts by weight of the solid rubber component. use. If the proportion of the liquid plasticizer is too small, it will be difficult to exert its function, and if it is too large, the pressure-sensitive adhesive composition will be too flexible and the cohesive force will be reduced, so that satisfactory adhesive properties can be obtained. It becomes difficult. If the proportion of the liquid plasticizer is too large, the fluidity of the pressure-sensitive adhesive composition at a temperature near body temperature becomes high, and the fluidity makes it easy to peel off the substrate, and the pressure-sensitive adhesive composition is fine on the skin surface. It enters into irregularities and causes pain at the time of peeling.
- a liquid polyisobutylene, a tackifier, and a liquid plasticizer into a rubber component composed of a specific combination of solid rubbers, coating suitability, cohesiveness, adhesive strength It is possible to obtain a pressure-sensitive adhesive tape having a pressure-sensitive adhesive composition excellent in feeling of use and a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive composition, with self-back-side adhesive strength, self-back-side adhesion, peeling pain, etc. being improved overall it can.
- the adhesive composition has good adhesive properties to the skin. Can be obtained.
- the solid rubber component can be composed of two components of polyisoprene and a styrene-isoprene-styrene block copolymer.
- the pressure-sensitive adhesive tape using the pressure-sensitive adhesive composition of the present invention is improved in coating suitability and pressure-sensitive adhesive composition by constituting the solid rubber component from two components of polyisoprene and styrene-isoprene-styrene block copolymer. It is possible to provide functions such as improving the adhesive strength of an object to the skin, reducing peeling pain, and imparting good adhesiveness to skin with great individual differences.
- the adhesive composition of the present invention can contain a drug.
- the drug is not particularly limited as long as it is a transdermal drug.
- examples of drugs include skin stimulants, analgesic / anti-inflammatory agents, antifungal agents, central nervous system agents, diuretics, antihypertensive agents, coronary vasodilators, antitussive expectorants, antihistamines, arrhythmic agents, cardiotonics, contraceptives, Examples include corticosteroids, local anesthetics, and vitamins.
- Examples of the skin stimulant or analgesic / anti-inflammatory agent include salicylic acid, methyl salicylate, glycol salicylate, acetylsalicylic acid, L-menthol, camphor (D-form, L-form, DL-form), peppermint oil, thymol, nicotinic acid benzyl ester, chili pepper Extract, capsaicin, nonylic acid vanillylamide, felbinac, flufenamic acid butyl, piroxicam, indomethacin, ketoprofen, pranoprofen, feprazone, flurbiprofen, loxoprofen, amphenac sodium, oxaprozin, emorphazone, thiaprofen, fenbufen, fentiazac, diclofenac Sodium, diflunisal, ibuprofen piconol, bendazac, suprofen, buprenorphine hydrochloride,
- the above drugs can be used alone or in combination of two or more.
- nonyl acid vanillylamide as a warm point stimulant
- L-menthol as a cold point stimulant.
- L-menthol is contained in the pressure-sensitive adhesive composition, a refreshing feeling is felt, and a function of relieving an unpleasant odor due to perspiration or the like is imparted.
- L-menthol can be added to the base material, but it is preferably contained in the pressure-sensitive adhesive composition in order to impart a refreshing feeling to the skin.
- the ratio of nonylic acid vanillylamide is preferably 0.0001 to 0.1% by mass, more preferably 0.005 to 0.05% by mass, based on the total amount of the composition.
- the proportion of L-menthol is preferably 1 to 20% by mass, more preferably 3 to 18% by mass, based on the total amount of the composition. Since the pressure-sensitive adhesive composition of the present invention has an excellent balance between adhesive strength and cohesive strength, even when a relatively large amount of L-menthol is contained, it can exhibit a function as a taping tape, and is practical. The problem is unlikely to occur.
- the pressure-sensitive adhesive composition of the present invention has an excellent balance of various properties, it is not necessary to add a filler for the purpose of lowering the adhesive strength or reducing the cohesive strength.
- a filler for the purpose of lowering the adhesive strength or reducing the cohesive strength.
- fillers that do not need to be blended include calcium carbonate, magnesium carbonate, hydrous silica, silica, zinc oxide, synthetic aluminum silicate, and aluminum hydroxide.
- various fillers should be blended to such an extent that the physical and chemical properties are not adversely affected, preferably 3% by mass or less of the total amount of the pressure-sensitive adhesive composition. Is possible.
- the pressure-sensitive adhesive composition of the present invention includes a solubilizer, a solubilizer, an anti-aging agent, an antioxidant, an antiseptic, an ultraviolet absorber, a colorant, a flavoring agent, a surfactant, a pH adjuster, and the like.
- Various additive components can be blended depending on the purpose of the composition.
- the base material of the pressure-sensitive adhesive tape of the present invention is appropriately selected depending on the application.
- the base material include polyolefins such as polyethylene, polypropylene and ethylene vinyl acetate copolymer; polybutadiene; polyvinyl chloride; thermoplastic polyesters such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate; nylon; polyurethane; cotton; (Cellulose derivative); Aluminum foil; etc. Film, sheet, metal foil, etc. are mentioned.
- Stretchable or non-stretchable base materials such as porous bodies and foams made of these polymers, paper, woven fabric, knitted fabric, and non-woven fabric can also be used. You may use these laminated bodies as a base material.
- the pressure-sensitive adhesive composition and pressure-sensitive adhesive tape of the present invention can be used, for example, for percutaneous absorption patches, emergency bandages, surgical dressings for the purpose of protecting wounds after surgery; It can be used for surgical drapes; tapes for reinforcing and fixing incised sutures; taping tapes used during sports;
- the adhesive tape is often wrapped around the hand or foot, so a flexible base material with characteristics such as flexibility, stretchability, hand tearability, self-adhesiveness, etc.
- a flexible base material with characteristics such as flexibility, stretchability, hand tearability, self-adhesiveness, etc.
- a woven fabric in which a composite yarn composed of cellulosic fibers and elastic fibers is arranged on a part or all of the warp yarn, and the strength in the S / Z direction of the cellulosic fiber yarn is used as the warp yarn.
- a fabric in which one yarn is alternately arranged is preferable.
- Cellulosic fiber is a material that causes a decrease in the average degree of polymerization by partially decomposing molecular chains by treatment with natural cellulose-degrading enzymes such as cotton, viscose rayon, and polynosic fiber.
- the composite yarn of cellulose fiber and elastic fiber is a twisted yarn, covered yarn, core-spun yarn, etc. of cellulose fiber and elastic fiber (for example, polyether polyurethane fiber, polyester polyurethane fiber, synthetic rubber fiber). This means that, among these, a core-spun yarn of a polyether-based polyurethane fiber and a cellulose-based fiber is preferable, but is not limited thereto.
- the mixing ratio of the cellulosic fiber yarn and the elastic fiber is preferably from 85 to 98 mass%, more preferably from 90 to 95 mass%, based on the cellulosic fiber.
- Threads used in the weft direction may be any fibers such as so-called synthetic fibers such as polyester fibers, polyamide fibers, acrylic fibers, and cellulose fibers such as cotton and rayon.
- a release liner can be disposed on the pressure-sensitive adhesive composition layer as necessary.
- the release liner for example, polyolefin such as polyethylene and polypropylene; thermoplastic polyester such as polyethylene terephthalate and polyethylene naphthalate; nylon; aluminum; and the like film, sheet, foil, or paper are selected. It can also be used.
- the surface of the release liner can be surface-treated with silicone or the like.
- the production method of the pressure-sensitive adhesive composition and the pressure-sensitive adhesive tape of the present invention can be appropriately selected from conventionally practiced methods.
- a drug or other additive component is added to and mixed with the dissolved or kneaded pressure-sensitive adhesive composition, and the resulting mixture is directly spread on the substrate, or once peeled off.
- the pressure-sensitive adhesive tape can be produced by spreading on a release liner such as paper, film or the like, and then pressure-transferring onto a substrate.
- the pressure-sensitive adhesive composition of the present invention is suitable for coating by a calendar method. When solid polyisobutylene is not blended as a solid rubber component, it is possible to select coating by a hot melt method.
- the thickness of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape of the present invention is usually 30 to 400 ⁇ m, preferably 50 to 200 ⁇ m. If the thickness of the pressure-sensitive adhesive composition layer is too thick, adhesive residue may be generated on the skin after application, or the release rate of the drug contained in the pressure-sensitive adhesive composition tends to deteriorate. When the thickness of the pressure-sensitive adhesive composition layer is too thin, the adhesiveness to the skin is inferior and tends to cause peeling.
- Adhesive tape sample 1 cut into strips having a length of 100 mm and a width of 25 mm was attached to the bakelite panel.
- the pressure-sensitive adhesive tape sample 2 cut into strips having a length of 100 mm and a width of 15 mm was laminated and pasted with the end portions being left.
- the pressure-sensitive adhesive tape sample 2 was subjected to one reciprocal pressure bonding with a 2 kg rubber roll at a speed of 300 mm / min in an atmosphere at a temperature of 23 ° C. in accordance with JIS Z 0237.
- the peeling force of the pressure-sensitive adhesive tape sample 2 on the base material (back surface) of the pressure-sensitive adhesive tape sample 1 was measured under the conditions of a peeling angle of 180 degrees and a peeling speed of 300 mm / min.
- Adhesiveness of self-back surface An adhesive tape sample of 50 mm width ⁇ 250 mm length was wrapped around a wrist movable part of five adult boys and pasted while being overlaid. After leaving for about 6 hours, evaluate the adhesion state of the overlapped part immediately before peeling off according to the following criteria, find the average value and round off the first decimal place to A, where A is, and the rating is 3 B, the case where the score is 2 is C, and the case where the score is 1 is D. 4 points: not peeled off at all 3 points: partly peeled off, but not enough to cause problems 2 points: There was a problem in peeling and holding the laminated state, 1 point: Completely peeled off.
- peeling pain An adhesive tape sample having a width of 50 mm ⁇ 250 mm was wrapped around a wrist movable part of five adult boys and pasted while being overlaid. About 6 hours later, the peeling pain when peeling from the skin was evaluated according to the following criteria, the average value was obtained, the score obtained by rounding the first decimal place was A, and the score was 3 The evaluation result was defined as C when the score was 2, and D when the score was 1. 4 points: almost no pain, 3 points: I feel some pain but no problem, 2 points: Pain is a problem, 1 point: Very painful.
- Example 1 30 parts by mass of polyisoprene [Nipol IR2200 (registered trademark) manufactured by Nippon Zeon Co., Ltd.], 51 parts by mass of styrene-isoprene-styrene block copolymer [Clayton D1107CP (registered trademark) manufactured by Kraton Polymer Japan], and solid polyisobutylene [BASF Opanol B100 (registered trademark)] 19 parts by mass of solid rubber component consisting of 19 parts by mass, 10 parts by mass of liquid polyisobutylene [High Mall 4H (registered trademark) by Nippon Petrochemical Co., Ltd.], terpene resin [ 55 parts by mass of YS resin PX1150N (registered trademark) manufactured by Yasuhara Chemical Co., Ltd. and 20 parts by mass of an aliphatic hydrocarbon resin [Quinton B170 (registered trademark) manufactured by Nippon Zeon Co., Ltd.] were added and melt mixed.
- the pressure-sensitive adhesive composition thus obtained was spread so as to have a thickness of 70 ⁇ m on one side of a woven fabric (UK 7032 manufactured by Toyobo STC) having a basis weight of 150 g / m 2 and rolled into a width of 5 cm. It wound and produced the adhesive tape.
- a woven fabric UK 7032 manufactured by Toyobo STC
- Table 1 The results are shown in Table 1.
- Example 2 As shown in Table 1, except that the ratio of solid polyisoprene was changed from 30 parts by mass to 21 parts by mass, and the ratio of styrene-isoprene-styrene block copolymer was changed from 51 parts by mass to 60 parts by mass, respectively.
- a pressure-sensitive adhesive composition and a pressure-sensitive adhesive tape were produced. The results are shown in Table 1.
- Example 3 As shown in Table 1, the styrene-isoprene-styrene block copolymer was changed from Clayton D1107CP to Clayton D1107CU (manufactured by Kraton Polymer Japan), and solid polyisobutylene was changed from Opanol B100 to Vistanex MML-120 (manufactured by ExxonMobil, Instead of the registered trademark), the proportion of the terpene resin is changed from 55 parts by mass to 50 parts by mass, the proportion of the liquid paraffin is changed from 25 parts by mass to 5 parts by mass, L-menthol is not added, and nonyl acid vanillylamide is added.
- a pressure-sensitive adhesive composition and a pressure-sensitive adhesive tape were produced in the same manner as in Example 1, except that 0.01% by mass was added. The results are shown in Table 1.
- Example 4 As shown in Table 1, the ratio of liquid polyisobutylene is changed from 25 parts by mass to 20 parts by mass, the ratio of terpene resin is changed from 50 parts by mass to 55 parts by mass, and the ratio of liquid paraffin is changed from 5 parts by mass. Except having replaced with 10 mass parts, it carried out similarly to Example 3, and produced the adhesive composition and the adhesive tape. The results are shown in Table 1.
- Example 5 As shown in Table 1, the ratio of liquid polyisobutylene is changed from 25 parts by mass to 10 parts by mass, the ratio of terpene-based resin is changed from 50 parts by mass to 55 parts by mass, and the ratio of liquid paraffin is changed from 5 parts by mass. Except having replaced with 15 mass parts, it carried out similarly to Example 3, and produced the adhesive composition and the adhesive tape. The results are shown in Table 1.
- Example 6 As shown in Table 1, the ratio of the styrene-isoprene-styrene block copolymer was changed from 51 parts by mass to 60 parts by mass, and the ratio of the solid polyisobutylene was changed from 19 parts by mass to 10 parts by mass. Made an adhesive composition and an adhesive tape in the same manner as in Example 5. The results are shown in Table 1.
- Solid rubber component 100 comprising 40 parts by mass of polyisoprene [Nipol IR2200L (registered trademark) manufactured by Nippon Zeon Co., Ltd.] and 60 parts by mass of a styrene-isoprene-styrene block copolymer [Clayton D1107CU (registered trademark) manufactured by Kraton Polymer Japan] 5 parts by mass of liquid polyisobutylene [Himor 4H (registered trademark) manufactured by Nippon Petrochemical Co., Ltd.], 70 parts by mass of terpene resin [YS Resin PX1150N (registered trademark) manufactured by Yasuhara Chemical Co., Ltd.], and aliphatic 20 parts by mass of a hydrocarbon resin [Quinton B170 (registered trademark) manufactured by Nippon Zeon Co., Ltd.] was added and melt-mixed.
- the pressure-sensitive adhesive composition thus obtained was spread on one side of a woven fabric with a basis weight of 150 g / m 2 (UK 7032 manufactured by Toyobo STC) to a thickness of 80 ⁇ m, and rolled into a width of 5 cm. It wound and produced the adhesive tape.
- Table 1 The results are shown in Table 1.
- Example 8 As shown in Table 1, a pressure-sensitive adhesive composition and a pressure-sensitive adhesive tape were produced in the same manner as in Example 7 except that the ratio of the terpene resin was changed from 70 parts by mass to 60 parts by mass. The results are shown in Table 1.
- Comparative Example 2 As shown in Table 1, a pressure-sensitive adhesive composition and a pressure-sensitive adhesive tape were prepared in the same manner as in Comparative Example 1 except that the ratio of liquid paraffin was changed from 15 parts by mass to 45 parts by mass. The results are shown in Table 1.
- Liquid paraffin HICOAL M352 (registered trademark) manufactured by Kaneda Corporation
- Medium-chain fatty acid triglyceride tri (caprylic acid / capric acid) glyceryl;
- NIKKOL Triester F810 registered trademark) manufactured by Nikko Chemical Co., Ltd.
- Dibutylhydroxytoluene anti-aging agent; Irganox 565 (registered trademark) manufactured by Ciba Specialty Chemicals
- the adhesive tape to be applied to the skin has good adhesive properties when the 180 degree peel force of the bakelite plate is in the range of 3 to 9 N / 25 mm and the probe tack is in the range of 2 to 6 N / 5 mm ⁇ . It can be evaluated that there is.
- the pressure-sensitive adhesive tapes of Examples 1 to 8 exhibit pressure-sensitive adhesive properties within the preferred numerical ranges listed above.
- the adhesive strength of the self-backing surface of the adhesive tape is determined by applying the adhesive tape to the base material surface (self-backing surface) of the pressure-sensitive adhesive tape itself, and reapplying it after a short application time (about 20 minutes). .
- the self-back adhesiveness is examined for the peeled state after a long sticking time (about 6 hours) after the adhesive tape is actually wound around the arm.
- the peeling pain is obtained by examining the peeling pain when the adhesive tape is peeled from the skin after the adhesive tape has been applied to the skin for 6 hours.
- the adhesive tapes of Examples 1 to 8 are excellent in adhesive properties, have a good balance between the self-back surface adhesive strength and the self-back surface adhesive properties, and have eased peeling pain.
- the pressure-sensitive adhesive tape of Comparative Example 1 has a low probe tack value, a poor balance between the bakelite adhesive force and the probe tack, and a low initial back surface adhesive strength (after about 20 minutes). As the time passes (after 6 hours), the self-back surface adhesiveness tends to increase, and strong peeling pain is exhibited.
- the pressure-sensitive adhesive tape of Comparative Example 2 has a low bakelite adhesive strength and a very high initial self-back surface adhesive strength, but its self-back surface adhesiveness tends to be slightly low and exhibits strong peeling pain. It is.
- the pressure-sensitive adhesive composition of the present invention also has good coating suitability.
- the pressure-sensitive adhesive composition and pressure-sensitive adhesive tape of the present invention are excellent in the balance between pressure-sensitive adhesive force and cohesive force, have a good feeling of use, have reduced peeling pain, and are suitable for medical pressure-sensitive adhesive tapes.
- the adhesive tape of the present invention is particularly suitable as a taping tape because it can be overlaid.
- Example 9 20 parts by mass of polyisoprene [Nipol IR2200 (registered trademark) manufactured by Nippon Zeon Co., Ltd.], 60 parts by mass of styrene-isoprene-styrene block copolymer (Clayton D1161JP (registered trademark) manufactured by Kraton Polymer Japan), and solid polyisobutylene [BASF] Opanol B100 (registered trademark)] 20 parts by mass of solid rubber component 100 parts by mass, liquid polyisobutylene [Shin Nippon Petrochemical Co., Ltd.
- High Mall 4H (registered trademark)] 10 parts by mass, terpene resin [ 40 parts by mass of YS resin PX1150N (registered trademark) manufactured by Yasuhara Chemical Co., Ltd. and 10 parts by mass of an aliphatic hydrocarbon resin [Quinton B170 (registered trademark) manufactured by Nippon Zeon Co., Ltd.] were added and melt mixed.
- the pressure-sensitive adhesive composition thus obtained was spread to a thickness of 140 ⁇ m on one side of a woven fabric having a basis weight of 150 g / m 2 (UK 7032 manufactured by Toyobo STC), and rolled into a width of 5 cm. It wound and produced the adhesive tape.
- Table 2 The results are shown in Table 2.
- Example 10 The same operation as in Example 9 was carried out except that the ratio of the terpene resin was changed from 40 parts by weight to 96 parts by weight, and the ratio of the aliphatic hydrocarbon resin was changed from 10 parts by weight to 24 parts by weight. An adhesive tape was prepared. The results are shown in Table 2.
- Example 11 The same as Example 9 except that the ratio of the terpene resin was changed from 40 parts by weight to 37.5 parts by weight and the ratio of the aliphatic hydrocarbon resin was changed from 10 parts by weight to 37.5 parts by weight.
- a pressure-sensitive adhesive tape was prepared by operating the above. The results are shown in Table 2.
- Example 12 The same as Example 9 except that the ratio of the terpene resin was changed from 40 parts by weight to 62.5 parts by weight and the ratio of the aliphatic hydrocarbon resin was changed from 10 parts by weight to 12.5 parts by weight.
- a pressure-sensitive adhesive tape was prepared by operating the above. The results are shown in Table 2.
- Liquid paraffin HICOAL M352 (registered trademark) manufactured by Kaneda Corporation
- Medium-chain fatty acid triglyceride tri (caprylic acid / capric acid) glyceryl; NIKKOL Triester F810 (registered trademark) manufactured by Nikko Chemical Co., Ltd.
- Dibutylhydroxytoluene anti-aging agent; Irganox 565 (registered trademark) manufactured by Ciba Specialty Chemicals
- the quantity ratio (T 1 / T 2 ) of the terpene resin (T 1 ) and the aliphatic hydrocarbon resin (T 2 ) is 1: 1 to Even if it is changed within the range of 5: 1, it has an excellent balance of various properties such as adhesive properties, self-back surface adhesiveness, and peeling pain, and is suitable for medical adhesive tape applications such as taping tape. It can be seen that a tape is obtained.
- the pressure-sensitive adhesive composition of the present invention can be used as a pressure-sensitive adhesive for pressure-sensitive adhesive tapes.
- the adhesive tape of this invention can be utilized in the technical field of medical adhesive tapes, such as a taping tape, for example.
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Abstract
Description
日本工業規格のJIS Z 0237に従い、温度23℃の雰囲気下でベークライトパネルに15mm幅の粘着テープ試料を貼付し、2kgのゴムロールで300mm/分の速度で1往復圧着した。この状態で20分間放置後、剥離角度180度と剥離速度300mm/分の条件で剥離力を測定した。この剥離力を対ベークライト粘着力(単位=N/25mm)という。対ベークライト板の180度剥離力が3~10N/25mmの範囲内が良好と評価される。
ニチバン(株)製プローブタックテスタ-を使用し、JIS Z 0237に参考として記載されているプローブタック試験法に従って、粘着テープ試料のプローブタックを測定した(単位=N/5mmφ)。プローブタックが2~6N/5mmφの範囲内が良好であると評価される。
ベークライトパネルに、縦100mm及び横25mmの短冊状に裁断した粘着テープ試料1を貼り付けた。該粘着テープ試料1の基材上(背面)に、縦100mm及び横15mmの短冊状に裁断した粘着テープ試料2を端部を残して重ね貼りした。次いで、粘着テープ試料2の基材上を、JIS Z 0237に従い、温度23℃の雰囲気下、2kgのゴムロールで300mm/分の速度で1往復圧着した。この状態で20分間放置後、剥離角度180度と剥離速度300mm/分の条件で、粘着テープ試料1の基材(背面)に対する粘着テープ試料2の剥離力を測定した。この剥離力を自背面粘着力(単位=N/25mm)という。
成年男子5名の手首可動部分に、50mm幅×250mm長の粘着テープ試料を巻き付けて重ね貼りしながら貼付した。約6時間放置後、剥がす直前の重ね貼り部分の付着状態を、下記の基準で評価し、平均値を求めて小数点第1位を四捨五入した評点が4の場合をA、評点が3の場合をB、評点が2の場合をC、評点が1の場合をDとして評価結果とした。
4点:全く剥がれていない、
3点:一部剥がれたが、問題が生じる程ではなかった、
2点:剥がれて重ね貼り状態の保持に問題があった、
1点:完全に剥がれた。
成年男子5名の手首可動部分に、50mm幅×250mm長の粘着テープ試料を巻き付けて重ね貼りしながら貼付した。約6時間後、皮膚から剥離したときの剥離痛さを、下記の基準で評価し、平均値を求めて小数点第1位を四捨五入した評点が4の場合をA、評点が3の場合をB、評点が2の場合をC、評点が1の場合をDとして評価結果とした。
4点:殆ど痛みを感じない、
3点:若干痛みを感じるが問題ない、
2点:痛みが感じられて問題である、
1点:非常に痛い。
ポリイソプレン〔日本ゼオン社製Nipol IR2200(登録商標)〕30質量部、スチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1107CP(登録商標)〕51質量部、及び固形状ポリイソブチレン〔BASF製オパノールB100(登録商標)〕19質量部からなる固形状ゴム成分100質量部に対して、液状ポリイソブチレン〔新日本石油化学社製ハイモール4H(登録商標)〕10質量部、テルペン系樹脂〔ヤスハラケミカル社製YSレジンPX1150N(登録商標)〕55質量部、並びに脂肪族系炭化水素樹脂〔日本ゼオン社製クイントンB170(登録商標)〕20質量部を添加し、溶融混合した。
表1に示すように、固形状ポリイソプレンの割合を30質量部から21質量部に、スチレン-イソプレン-スチレンブロック共重合体の割合を51質量部から60質量部に、それぞれ変更したこと以外は、実施例1と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、スチレン-イソプレン-スチレンブロック共重合体をクレイトンD1107CPからクレイトンD1107CU(クレイトンポリマージャパン製)に代え、固形状ポリイソブチレンをオパノールB100からビスタネックスMML-120(エクソンモービル社製、登録商標)に代え、テルペン系樹脂の割合を55質量部から50質量部に代え、流動パラフィンの割合を25質量部から5質量部に代え、L-メントールを添加せず、かつ、ノニル酸ワニリルアミドを0.01質量%の割合で添加したこと以外は、実施例1と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、液状ポリイソブチレンの割合を25質量部から20質量部に代え、テルペン系樹脂の割合を50質量部から55質量部に代え、かつ、流動パラフィンの割合を5質量部から10質量部に代えたこと以外は、実施例3と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、液状ポリイソブチレンの割合を25質量部から10質量部に代え、テルペン系樹脂の割合を50質量部から55質量部に代え、かつ、流動パラフィンの割合を5質量部から15質量部に代えたこと以外は、実施例3と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、スチレン-イソプレン-スチレンブロック共重合体の割合を51質量部から60質量部に代え、かつ、固形状ポリイソブチレンの割合を19質量部から10質量部に代えたこと以外は、実施例5と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
ポリイソプレン〔日本ゼオン社製Nipol IR2200L(登録商標)〕40質量部とスチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1107CU(登録商標)〕60質量部とからなる固形状ゴム成分100質量部に対して、液状ポリイソブチレン〔新日本石油化学社製ハイモール4H(登録商標)〕5質量部、テルペン系樹脂〔ヤスハラケミカル社製YSレジンPX1150N(登録商標)〕70質量部、並びに脂肪族系炭化水素樹脂〔日本ゼオン社製クイントンB170(登録商標)〕20質量部を添加し、溶融混合した。
表1に示すように、テルペン系樹脂の割合を70質量部から60質量部に代えたこと以外は、実施例7と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、ポリイソプレンの割合を30質量部から40質量部に、スチレン-イソプレン-スチレンブロック共重合体の割合を51質量部から40質量部に、固形状ポリイソブチレンの割合を19質量部から20質量部に、及び流動パラフィンの割合を25質量部から15質量部に、それぞれ変更したこと以外は、実施例1と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
表1に示すように、流動パラフィンの割合を15質量部から45質量部に代えたこと以外は、比較例1と同様にして、粘着剤組成物と粘着テープを作製した。結果を表1に示す。
(1)ポリイソプレン(a):日本ゼオン社製ポリイソプレンゴム〔Nipol IR2200(登録商標);ムーニー粘度(中心値)=83〕
(2)ポリイソプレン(b):日本ゼオン社製ポリイソプレンゴム〔Nipol IR2200L(登録商標);ムーニー粘度(中心値)=70〕
(3)SIS(a):スチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1107CP(登録商標)〕
(4)SIS(b):スチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1107CU(登録商標)
(5)ポリイソブチレン(a):固形状ポリイソブチレン〔BASF製オパノールB100(登録商標)〕
(6)ポリイソブチレン(b):固形状ポリイソブチレン〔エクソンモービル社製ビスタネックスMML-120(登録商標)〕
(7)液状ポリイソブチレン:新日本石油化学社製ハイモール4H(登録商標);粘度平均分子量=40,000
(8)テルペン系樹脂:ヤスハラケミカル社製YSレジンPX1150N(登録商標)、軟化点=115±5℃
(9)脂肪族系炭化水素樹脂:日本ゼオン社製クイントンB170(登録商標)、軟化点=70℃
(10)流動パラフィン:カネダ株式会社製ハイコールM352(登録商標)
(11)中鎖脂肪酸トリグリセリド:トリ(カプリル酸/カプリン酸)グリセリル;日光ケミカル社製NIKKOL トリエスターF810(登録商標)
(12)ジブチルヒドロキシトルエン:老化防止剤;チバ・スペシャルティ・ケミカルズ社製イルガノックス565(登録商標)
皮膚に貼付する粘着テープは、対ベークライト板の180度剥離力が3~9N/25mmの範囲内で、かつ、プローブタックが2~6N/5mmφの範囲内であると、その粘着特性が良好であると評価することができる。実施例1~8の粘着テープは、上記に挙げた好適の数値範囲内の粘着特性を示すものである。
ポリイソプレン〔日本ゼオン社製Nipol IR2200(登録商標)〕20質量部、スチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1161JP(登録商標)〕60質量部、及び固形状ポリイソブチレン〔BASF製オパノールB100(登録商標)〕20質量部からなる固形状ゴム成分100質量部に対して、液状ポリイソブチレン〔新日本石油化学社製ハイモール4H(登録商標)〕10質量部、テルペン系樹脂〔ヤスハラケミカル社製YSレジンPX1150N(登録商標)〕40質量部、並びに脂肪族系炭化水素樹脂〔日本ゼオン社製クイントンB170(登録商標)〕10質量部を添加し、溶融混合した。
テルペン系樹脂の割合を40重量部から96重量部に、かつ、脂肪族系炭化水素樹脂の割合を10重量部から24重量部に、それぞれ変更したこと以外は実施例9と同様に操作して粘着テープを作製した。結果を表2に示す。
テルペン系樹脂の割合を40重量部から37.5重量部に、かつ、脂肪族系炭化水素樹脂の割合を10重量部から37.5重量部に、それぞれ変更したこと以外は実施例9と同様に操作して粘着テープを作製した。結果を表2に示す。
テルペン系樹脂の割合を40重量部から62.5重量部に、かつ、脂肪族系炭化水素樹脂の割合を10重量部から12.5重量部に、それぞれ変更したこと以外は実施例9と同様に操作して粘着テープを作製した。結果を表2に示す。
(1)ポリイソプレン(a):日本ゼオン社製ポリイソプレンゴム〔Nipol IR2200(登録商標);ムーニー粘度(中心値)=83〕
(2)SIS(c):スチレン-イソプレン-スチレンブロック共重合体〔クレイトンポリマージャパン製クレイトンD1161JP(登録商標)〕
(3)ポリイソブチレン(a):固形状ポリイソブチレン〔BASF製オパノールB100(登録商標)〕
(4)液状ポリイソブチレン:新日本石油化学社製ハイモール4H(登録商標);粘度平均分子量=40,000
(5)テルペン系樹脂:ヤスハラケミカル社製YSレジンPX1150N(登録商標)、軟化点=115±5℃
(6)脂肪族系炭化水素樹脂:日本ゼオン社製クイントンB170(登録商標)、軟化点=70℃
(7)流動パラフィン:カネダ株式会社製ハイコールM352(登録商標)
(8)中鎖脂肪酸トリグリセリド:トリ(カプリル酸/カプリン酸)グリセリル;日光ケミカル社製NIKKOL トリエスターF810(登録商標)
(9)ジブチルヒドロキシトルエン:老化防止剤;チバ・スペシャルティ・ケミカルズ社製イルガノックス565(登録商標)
表2の結果から明らかなように、粘着付与剤として、テルペン系樹脂(T1)と脂肪族系炭化水素樹脂(T2)との量比(T1/T2)を、1:1~5:1の範囲内で変化させて併用しても、粘着特性、自背面接着性、及び剥離痛さなどの諸特性のバランスに優れ、テーピングテープなどの医療用粘着テープの用途に適した粘着テープの得られることが分かる。
Claims (15)
- 常温で固形状のゴム成分として、ポリイソプレン10質量%以上50質量%未満、スチレン-イソプレン-スチレンブロック共重合体50質量%超過90質量%以下、及びポリイソブチレン0~30質量%を含有し、かつ、該固形状のゴム成分100質量部に対して、常温で液状のポリイソブチレン1~30質量部、粘着付与剤50~120質量部、並びに常温で液状の可塑剤1~40質量部を含有する粘着剤組成物。
- 該常温で固形状のゴム成分が、ポリイソプレン18~49質量%、スチレン-イソプレン-スチレンブロック共重合体51~82質量%、及びポリイソブチレン0~20質量%を含有するものである請求項1記載の粘着剤組成物。
- 該常温で固形状のポリイソプレンが、ムーニー粘度(ML1+4、100℃)が40~96の範囲内で、かつ、ゲルパーミエーションクロマトグラフィにより標準ポリスチレン換算値として得られる数平均分子量が100,000~2,500,000の範囲内の合成ポリイソプレンゴムである請求項1記載の粘着剤組成物。
- 該常温で固体状のスチレン-イソプレン-スチレンブロック共重合体が、JIS K7210に従って温度200℃及び荷重5kgで測定したメルトフローレイトが1~20g/10分の範囲内で、かつ、ゲルパーミエーションクロマトグラフィにより標準ポリスチレン換算値として得られる数平均分子量が45,000~400,000の範囲内のものである請求項1記載の粘着剤組成物。
- 該常温で固体状のポリイソブチレンが、粘度平均分子量が200,000~1,500,000の範囲内のものである請求項1記載の粘着剤組成物。
- 該常温で液状のポリイソブチレンが、粘度平均分子量が30,000~100,000の範囲内のものである請求項1記載の粘着剤組成物。
- 該粘着付与剤が、テルペン系樹脂と脂肪族系炭化水素樹脂とを質量比1:1~5:1の範囲内で含有するものである請求項1記載の粘着剤組成物。
- 該粘着付与剤の割合が、常温で固形状のゴム成分100質量部に対して、50~120質量部の範囲内である請求項1記載の粘着剤組成物。
- 該常温で液状の可塑剤が、流動パラフィンを含有するものである請求項1記載の粘着剤組成物。
- 該常温で液状の可塑剤が、流動パラフィンと中鎖脂肪酸トリグリセリドとを質量比1:1~5:1の範囲内で含有するものである請求項1記載の粘着剤組成物。
- 該液状の液状可塑剤の割合が、固形状ゴム成分100質量部に対して、1~40質量部の範囲内である請求項1記載の粘着剤組成物。
- 該粘着剤組成物が、常温で固形状の可塑剤を実質的に含有しないものである請求項1記載の粘着剤組成物。
- 局所刺激剤として、温点刺激薬または冷点刺激薬をさらに含有する請求項1記載の粘着剤組成物。
- 冷点刺激薬として、L-メントールを粘着剤組成物全量基準で1~20質量%の範囲内でさらに含有する請求項1記載の粘着剤組成物。
- 基材上に、請求項1記載の粘着剤組成物層が設けられた粘着テープ。
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JP2011500589A JP5597187B2 (ja) | 2009-02-20 | 2010-02-15 | 粘着剤組成物及び粘着テープ |
US13/202,310 US20110306677A1 (en) | 2009-02-20 | 2010-02-15 | Pressure Sensitive Adhesive Composition and Pressure Sensitive Adhesive Tape |
CA2753052A CA2753052A1 (en) | 2009-02-20 | 2010-02-15 | Pressure sensitive adhesive composition and pressure sensitive adhesive tape |
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Also Published As
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US20110306677A1 (en) | 2011-12-15 |
JPWO2010095578A1 (ja) | 2012-08-23 |
JP5597187B2 (ja) | 2014-10-01 |
CA2753052A1 (en) | 2010-08-26 |
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