JPWO2005078058A1 - Detergent composition - Google Patents

Abstract

The present invention comprises 10 to 40% by weight of an alkylbenzene sulfonate, 7 to 40% by weight of an alkali agent, 15% by weight or less of a nonionic surfactant, and 0.07 to 10% by weight of a foam modifier. A detergent composition comprising a water-soluble organic polymer having an average molecular weight exceeding 1 million, a method for washing an object to be cleaned using a washing liquid containing the detergent composition, and a water-soluble composition having an average molecular weight exceeding 1 million. The present invention relates to a foam control agent containing a functional organic polymer. The detergent composition is suitably used for washing clothes and the like.

Description

  The present invention relates to a detergent composition, a washing method using the detergent composition, and a foam control agent.

  Generally, the washing liquid foams during washing, so that the consumer can get a feeling of washing power and can get comfort in washing work. Therefore, the design of detergent foaming is a factor that greatly affects the value of detergent products. On the other hand, the fact that bubbles remain even after rinsing many times after washing leads to dislike for consumers, and improving foaming as well as foaming is a factor that greatly affects the value of detergent products.

  As a method for controlling the foam of the detergent, it is common to optimize the type and / or amount of surfactants or combinations (for example, see Patent Documents 1, 2, and 3).

In addition, attempts have been made to reduce the amount of foam by blending a specific antifoaming substance. For example, in Patent Documents 4 and 5, a garment washing rinse aid using poly (dimethylsiloxane) is used, and in Patent Document 6, a garment using an aminoalkyl-modified silicone oil having specific physical properties as silicone constituting the rinse aid. Techniques for laundry rinse aids are disclosed. However, the detergent system for increasing the foam has a large amount of foam remaining even at the time of rinsing, and the system containing an antifoaming agent has a problem that it is difficult for the foam to form even at the time of washing.
As a method for imparting flexibility to washed clothes after washing, a method using a layered clay mineral is known. Since this effect is achieved by the action of solid lubrication by the clay mineral remaining on the garment, technology development for efficiently adsorbing and remaining the clay mineral on the garment has been carried out. For example, in Patent Document 7, a smectite-type clay mineral is adsorbed on clothing by a polymer flocculant to improve flexibility. However, a large amount of solid particles such as clay minerals remaining in clothing causes darkening, dullness, and the like, resulting in a loss in the cleaning properties of the clothing.
International Publication No. 98/0507 Pamphlet International Publication No. 97/44434 Pamphlet Japanese Patent Laid-Open No. 11-80785 JP-A-3-186307 Japanese Patent Laid-Open No. 4-311800 Japanese Patent No. 3162249 Japanese Patent No. 2620318

  An object of the present invention is to provide a detergent composition having a high detergency and having both high foamability at the time of washing and foamability at the time of rinsing, a washing method using the detergent composition, and foaming of the washing liquid at the time of washing And it is providing the foam regulator which can improve both the foaming property at the time of a rinse.

  As a result of intensive studies, the present inventors have an excellent detergency, and a detergent composition containing a specific foam regulator has an excellent foaming property in the cleaning process, and also has a foam persistence. However, the present invention has been completed by finding that the foaming property in the rinsing process is very excellent.

That is, the gist of the present invention is as follows.
[1] Alkylbenzene sulfonate 10 to 40% by weight, alkali agent 7 to 40% by weight, nonionic surfactant 15% by weight or less and foam regulator 0.07 to 10% by weight A detergent composition comprising a water-soluble organic polymer having an average molecular weight exceeding 1 million,
[2] The detergent composition according to [1], wherein the clay mineral content is 5% by weight or less,
[3] The detergent composition according to [1] or [2], wherein the content of the water-soluble organic polymer having an average molecular weight exceeding 1 million in the foam modifier is 30% by weight or more.
[4] The detergent composition according to any one of [1] to [3], wherein the water-soluble organic polymer is a polyacrylate.
[5] The detergent composition according to any one of [1] to [3], wherein the water-soluble organic polymer is polyethylene oxide,
[6] The detergent composition according to [5], wherein the nonionic surfactant is 3% by weight or less,
[7] The detergent composition according to any one of [1] to [3], wherein the water-soluble organic polymer is polyacrylamide,
[8] A method for washing an object to be cleaned using a washing liquid containing the detergent composition according to any one of [1] to [7], and
[9] The present invention relates to a use as a water-soluble organic polymer foam regulator having an average molecular weight exceeding 1 million.

  The detergent composition of the present invention has an excellent detergency and also contains a specific foam regulator, so that it is possible to perform washing with good foaming at the time of washing and with good foaming at the time of rinsing. Is played.

1. Detergent Composition The detergent composition of the present invention comprises 10 to 40% by weight of alkylbenzene sulfonate, 7 to 40% by weight of alkaline agent, 15% by weight or less of nonionic surfactant, and 0.07 to 10% by weight of foam control agent. %, And the foam regulator contains a water-soluble organic polymer having an average molecular weight of more than 1 million. By having such a configuration, the foam regulator has excellent detergency, and has good foaming at the time of washing. In the case of rinsing, there is an effect that washing with good foam can be performed.

<Alkylbenzene sulfonate>
The alkylbenzene sulfonate used in the present invention has highly palatable foam. For this reason, it is possible to provide a feeling of detergency and comfort during washing.

  In detergent compositions, an anionic surfactant is generally used as a main base because of its cleaning properties. Among them, alkylbenzene sulfonate is a widely used base because of its versatility and economy. .

Examples of the alkylbenzene sulfonate include a hard type in which an alkyl chain has a branched structure and a soft type in which a linear structure is present. From the viewpoint of biodegradability, the alkylbenzene sulfonate is preferably a straight-chain type (soft type). The alkylbenzene sulfonate is obtained by sulfonating alkylbenzene.
In this case, the alkylbenzene used as a raw material is synthesized by various synthesis methods. However, the content of phenyl isomers varies depending on the synthesis method, and the physical properties as a surfactant after being derived into an alkylbenzene sulfonate. To affect. From the viewpoint of detergency and productivity, alkylbenzene sulfonates using alkylbenzene synthesized by an α-olefin method as a raw material are preferable.
Further, from the viewpoint of detergency and hard water resistance, alkylbenzene sulfonates such as methyl branched alkyl type and methyl-substituted benzene type are also preferably used.

  The alkylbenzene sulfonate is obtained by sulfonating the above alkylbenzene with sulfurous acid gas or fuming sulfuric acid and neutralizing with an alkaline component such as sodium hydroxide or potassium hydroxide. The salt used is not particularly limited as long as it is a monovalent cation such as an ammonium salt or an amine salt in addition to an alkali metal salt such as a lithium salt, a potassium salt, or a sodium salt. Alkaline earth metal salts such as calcium and magnesium have the effect of precipitating alkylbenzene sulfonic acid, and therefore are preferably as small as possible. About a counter ion, an alkali metal salt is preferable from a viewpoint of storage stability and cost, and a sodium salt is still more preferable especially.

  The content of the alkylbenzene sulfonate is 10 to 40% by weight in the detergent composition, more preferably 12% by weight or more, more preferably 15% by weight or more, and more preferably 18% by weight or more from the viewpoint of detergency. Further preferred. Moreover, as content of alkylbenzenesulfonate, 35 weight% or less is preferable and 30 weight% or less is more preferable from a viewpoint of the foam rinse property after washing | cleaning in a detergent composition. Among them, 10 to 35% by weight is more preferable, 12 to 30% by weight is further preferable, 15 to 30% by weight is further preferable, and 18 to 30% by weight is further preferable. In the present invention, in order to obtain highly-preferred foam, the proportion of alkylbenzene sulfonate in the total surfactant of the detergent composition is preferably 50% by weight or more, and preferably 60% by weight or more. More preferably, it is more preferably 70% by weight or more.

<Alkaline agent>
Typical stains include dirt and cuff stains. These stains include solid oils such as triglycerides secreted from the human body, wax, etc. and their decomposition products, and solid stains such as skin keratin and extraneous dust. In order to remove such dirt and cuffs, it is particularly effective to improve sebum detergency.

    Alkaline agent is not only an essential component as an aid to the cleaning function by a surfactant, but also by using an alkaline agent to soap fatty acid stains originating from human body glycerides, There is an advantage that other dirt can be emulsified and dispersed to remove and remove the dirt from the clothing. In order to efficiently remove dirt and cuffs, it is essential to add an alkaline agent at a certain level or higher.

  The alkaline agent used in the present invention is one that dissolves in water at the time of washing and raises the pH of the washing solution, and may be any known one, but from the viewpoint of economy and availability, a hydroxide salt, Examples thereof include carbonates, hydrogen carbonates, silicates, and carboxylates.

  The salt is not particularly limited, and examples thereof include alkali metal salts such as lithium salt, potassium salt, sodium salt, etc., but the storage stability and cost, or the ionic strength of the cleaning liquid is increased, and it is suitable for sebum dirt cleaning properties. From the standpoint of action, potassium salts and sodium salts are preferable, and sodium salts are more preferable. Among these, sodium carbonate, sodium silicate, sodium hydrogen carbonate and a mixture thereof are preferable because they not only make the cleaning liquid alkaline, but also buffer the cleaning liquid in a suitable pH range during cleaning. Moreover, when the main alkali agent in a detergent composition is a silicate, it is more preferable to use together with carbonate from a viewpoint of storage stability and solubility.

  The content of the alkaline agent in the detergent composition is 7 to 40% by weight, preferably 8% by weight or more, more preferably 10% by weight or more in order to maintain a pH range suitable for washing. From the viewpoint of not impairing the degree of freedom, it is preferably 38% by weight or less, more preferably 35% by weight or less. Especially, as said content, 8-38 weight% is more preferable in a detergent composition, and 10-35 weight% is further more preferable.

<Nonionic surfactant>
Examples of the nonionic surfactant used in the present invention include polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene polyoxypropylene glycol represented by trademark Pluronic, polyoxyethylene alkylamine, Examples include fatty acid alkanolamides, alkyl glucosides, alkyl glucose amides, and alkyl amine oxides. In the detergent composition of the present invention, the content of the nonionic surfactant is 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, from the viewpoint of foam loss during rinsing. On the other hand, when the water-soluble organic polymer having an average molecular weight exceeding 1,000,000 is polyethylene oxide, the amount of the nonionic surfactant is preferably 3% by weight or less in the detergent composition, more preferably 1% by weight or less. It is better not to contain substantially.

<Foam regulator>
In the present invention, the foam regulator is a component other than the surfactant used to adjust foaming / foaming in a surfactant system comprising an alkylbenzene sulfonic acid, and is a washing step or rinsing step. An agent used to adjust the foam.

  One feature of the present invention is that the foam regulator contains a water-soluble organic polymer having an average molecular weight exceeding 1 million (also referred to as more than 1 million). By using the foam control agent having such characteristics, the effect of increasing the foam at the time of washing and improving the foam breakage at the time of rinsing is exhibited. Therefore, the present invention relates to a foam control agent comprising a water-soluble organic polymer having an average molecular weight exceeding 1 million.

  Water-soluble organic polymers having an average molecular weight exceeding 1 million include, for example, acrylic acid, methacrylic acid, maleic acid, fumaric acid, acrylamide, methacrylamide, 2-acryloylamino-2-methylpropanesulfonic acid, allyl alcohol, hydroxyacrylic acid, Polymers or copolymers containing monomers such as ethylene oxide and propylene oxide as structural units, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, guar gum, xanthan gum, starch, hyaluronic acid, carrageenan and derivatives thereof, What has the said effect is used. Among these, polyacrylic acid, polyethylene oxide, and polyacrylamide are preferable from the viewpoints of economy and quality stability. If the average molecular weight exceeds 1,000,000, it is suitable as the water-soluble organic polymer of the present invention. The average molecular weight is more preferably 1.2 million or more, further preferably 1.5 million or more, further preferably 3 million or more, and further preferably 5 million or more. Further, from the viewpoint of solubility, the upper limit of the average molecular weight is preferably 100 million or less, more preferably 30 million or less, further preferably 10 million or less, and further preferably 7.5 million or less. When the water-soluble organic polymer having an average molecular weight exceeding 1,000,000 is an anionic water-soluble organic polymer such as acrylic acid, it may have a salt form neutralized with alkali metal salts such as lithium, potassium and sodium. However, some or all of them may be in the acid form. When a part or all of them are in a salt form, examples of the salt include alkali metal salts such as lithium salt, sodium salt, potassium salt, ammonium salt, and amine salt, and sodium salt is preferable from the viewpoint of economy. Further, when the water-soluble organic polymer having an average molecular weight exceeding 1,000,000 is polyethylene oxide, the average molecular weight is preferably 2 million or more, more preferably 3 million or more, and further preferably 4 million or more.

  The molecular weight is measured by the GPC method under the following measurement conditions, and the molecular weight in terms of polyethylene oxide (PEO) is taken as the measurement value. That is, when the peak top molecular weight is larger than the peak top molecular weight of polyethylene oxide having a molecular weight of 1 million, it can be used as a polymer having an “average molecular weight of 1 million or more”. For example, trade name: “PEO-8Z” manufactured by Sumitomo Seika Co., Ltd. is a water-soluble organic polymer having a foam adjusting action in the present invention. When this is measured by the following method, the peak top molecular weight is about 2.8 million. When there are a plurality of peaks, each peak is considered as a separate polymer. For large molecules having an average molecular weight exceeding 5 million, it is difficult to obtain an accurate distribution in the high molecular weight part due to the influence of the exclusion limit. For this reason, in this invention, the peak top of GPC measurement is made into an average molecular weight.

[GPC method measurement conditions]
The column is PW / GMPWXL / GMPWXL (manufactured by Tosoh Corporation), 0.2M phosphate buffer (KH ₂ PO ₄ , Na ₂ HPO ₄ , pH = 7) / CH ₃ CN = 9/1 is used as the eluent, Column temperature: 40 ° C., flow rate: 1 ml / min, sample concentration is 10 to 100 μg / ml. The detector uses RALLS.

  However, simply, an approximate value of average molecular weight can also be estimated in GPC analysis using RID (differential refractometer).

Moreover, the antifoamer which suppresses the amount of foams is mentioned as another foam regulator.
Examples of antifoaming agents include polyorganosiloxane and its derivatives.

  When a large amount of a foam increasing agent having only a foam increasing effect is blended as a foam control agent, foam loss during rinsing is poor, and similarly, when a large amount of a defoaming agent having only a defoaming effect is blended Is a ratio of water-soluble organic polymer with an average molecular weight exceeding 1 million as a substance having both a foam-increasing effect during washing and a defoaming effect during rinsing, because it is difficult for bubbles to be produced during washing. Is preferably 10% by weight or more, more preferably 30% by weight or more, further preferably 50% by weight or more, further preferably 70% by weight or more, and further preferably 100% by weight.

  In the detergent composition of the present invention, the foam modifier is contained in an amount of 0.07 to 10% by weight, but from the viewpoint of obtaining a sufficient foaming / rinsing effect, 0.1% by weight or more is preferable, and 0.2% by weight. The above is more preferable, 0.3% by weight or more is more preferable, and 0.5% by weight or more is more preferable. Moreover, from a viewpoint which does not impair the compounding freedom degree of the other component in a detergent composition, 8 weight% or less is preferable and 5 weight% or less is more preferable. Among them, the content in the detergent composition is more preferably 0.1 to 8% by weight, still more preferably 0.2 to 5% by weight, still more preferably 0.3 to 5% by weight, and still more preferably. 0.5 to 5% by weight.

<Clay mineral>
Clay mineral is a cation-exchange layered silicate that can intercalate an organic substance between crystal structure layers to form an interlayer complex. These clay minerals include those classified into the kaolinite group, pyrophyllite group, smectite group, vermiculite group, mica group, brittle mica group, and chlorite group, as well as compounds such as swellable fluorine-based mica. Can be mentioned. An example of such a clay mineral is a smectite clay mineral. Smectite clay minerals include montmorillonite, which is well-known as a main component of bentonite as natural products, as well as beidellite, hectorite, saponite, nontronite, etc. It is known to blend these in detergents. On the other hand, when a large amount of clay mineral is blended, a large amount of clay mineral particles remain on the clothing due to the interaction between the water-soluble organic polymer having an average molecular weight of more than 1 million and the clay mineral, which is blackened and dull. This causes damage to the washability of clothing.

  In the detergent composition of the present invention, a small amount of clay mineral may be blended for the purpose of imparting flexibility, but in the detergent composition of the present invention, the clay mineral is preferably 5% by weight or less, preferably 3% by weight. The following is more preferable, and 1% by weight or less is more preferable. Furthermore, it is preferable not to mix substantially.

<Other surfactants>
As long as the effects of the present invention are not impaired, a known surfactant other than the alkylbenzene sulfonate and the nonionic surfactant can be blended in the detergent composition of the present invention within a known range. This surfactant is roughly classified into cationic, anionic and amphoteric ones. Among them, the alkyl sulfate as an anionic surfactant is preferably 15% by weight or less, more preferably 10% by weight or less, more preferably 5% by weight or less in the detergent composition from the viewpoint of solubility. More preferably it is.

<Metal ion sequestering agent>
Moreover, you may mix | blend a well-known sequestering agent with the detergent composition of this invention. The sequestering agent is blended for the purpose of suppressing deterioration of the surface active ability of the surfactant depending on hardness components such as calcium ions in the washing water. The sequestering agent used in the present invention includes condensed phosphates, zeolites of A type, X type, Y type, P type, etc. (crystalline aluminosilicates), crystalline silicates, ethylenediaminetetraacetate, oxalate. Examples thereof include carboxylic acid salts such as acid salts, citrate salts, and fumarate salts. From the economical viewpoint, condensed phosphates and zeolites are preferred as the main sequestering agent in the detergent composition. When the main sequestering agent in the detergent composition is a condensed phosphate, it is preferable to use it together with zeolite from the viewpoint of storage stability. The content of the sequestering agent is preferably 5% by weight or more, more preferably 10% by weight or more, and further preferably 15% by weight or more in the detergent composition. On the other hand, 40% by weight or less is preferable, 30% by weight or less is more preferable, and 25% by weight or less is more preferable from the viewpoint of not impairing the degree of freedom of blending.

<Other ingredients>
In addition to the water-soluble organic polymer having an average molecular weight exceeding 1 million, the detergent composition of the present invention includes a water-soluble organic polymer having an average molecular weight of 1 million or less for the purpose of sequestering polyvalent metal ions and dispersing solid particles in the cleaning liquid. Can be blended. For example, naphthalene sulfonic acid formalin condensate and derivatives thereof, carboxylic acid polymers, polyethylene polymers, sugar derivatives such as carboxymethyl cellulose, aminocarboxylic acid polymers such as polyglyoxylate and polyaspartate, acrylamide polymers, Examples include vinyl alcohol polymers, pyrrolidone polymers, lignin sulfone polymers, olefin / maleic acid copolymers, imidazole polymers, polyphosphoric acid polymers, and cationized starch. As the carboxylic acid-based polymer, homo or copolymers having one or more kinds selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, fumaric acid, and hydroxyacrylic acid as essential monomers, and derivatives thereof, Or those salts are mentioned. Of these, carboxylic acid polymers, sugar derivatives such as carboxymethyl cellulose, and polyphosphoric acid polymers are preferable. In addition, the water-soluble organic polymer having an average molecular weight exceeding 1 million is polyethylene oxide, and particularly when used in combination with a partially saponified vinyl alcohol polymer, the partially saponified vinyl alcohol polymer is contained in the detergent composition. 5% by weight or less is preferable, 3% by weight or less is more preferable, and 1% by weight or less is more preferable. Moreover, it is not necessary to mix | blend substantially. When a sugar derivative such as carboxymethylcellulose is used, it is preferably 0.05% by weight or more, more preferably 0.1% by weight or more, and further preferably 0.3% by weight or more in the detergent composition from the viewpoint of detergency. . Moreover, from a soluble viewpoint, 10 weight% or less is preferable in a detergent composition, 7 weight% or less is more preferable, and 5 weight% or less is more preferable.

<Dosage form and manufacturing method>
Examples of the form of the detergent composition of the present invention having the above-described configuration include powder, liquid, paste, and tablets, but are not particularly limited. Among these, a powder form, a paste form, and a tablet are preferable in that the degree of freedom of blending of the alkaline agent is large, and a powder form is more preferable in terms of solubility. Moreover, there is no limitation in those manufacturing methods, It can manufacture by a well-known method. For example, if powdered, spray drying method, dry neutralization method, dry granulation method, dry blending method, fluidized bed drying method, thin film drying method, extrusion granulation method, rolling granulation method, stirring granulation method It can be produced by a compaction granulation method, a surfactant loading method and a combination thereof. For example, in the case of a tablet, a manufacturing method such as a tableting (tablet) method or a roll press method can be used.
In these production methods, production conditions such as production temperature and time are not particularly limited.

  The detergent composition of the present invention obtained by such a production method is suitably used for washing clothes and the like.

2. Washing method The present invention also relates to a washing method. The washing method of the present invention is characterized in that an object to be washed is washed with a washing liquid containing the detergent composition, and by having such a feature, foaming is good and foaming is good at the time of washing. The effect that washing can be performed is produced.

  Examples of the washing method include a washing method using a two-tank washing machine, a fully automatic washing machine, and a drum washing machine from the viewpoint of simplicity, and a washing method by hand washing from the viewpoint of washing power and economy. Among these, washing by a two-tank washing machine in which a tasteful foam can be visually observed and hand washing are preferable, and hand washing is more preferable. In addition, there are no particular limitations on the washing conditions such as the amount of washing liquid, the type and amount of the object to be washed, the washing time and the washing temperature in these methods.

  The washing liquid used in the present invention can be prepared, for example, by dissolving and dispersing the detergent composition in a solvent such as water. The content of the detergent composition in the washing liquid is preferably 0.5 g / L or more from the viewpoint of detergency, and is preferably 20 g / L or less from the viewpoint of economy. Furthermore, Preferably, it is 1.0-15 g / L, More preferably, it is 1.5-10 g / L, More preferably, it is 3.0-10 g / L.

  In the following, aspects of the invention will be further described and disclosed by means of examples. This example is merely illustrative of the invention and is not meant to be limiting in any way.

(Measurement of molecular weight)
The molecular weight of each organic polymer used in this example was measured by the method described above.
Sample 1 Sodium polyacrylate "Aron A-20P" manufactured by Toagosei Co., Ltd.
Sample 2 Acrylamide methylpropane sulfonic acid / acrylic acid copolymer Na salt “Aron A-50P” manufactured by Toagosei Co., Ltd.
Sample 3 Polyethylene oxide “PEO-PF” manufactured by Sumitomo Seika Co., Ltd.
Sample 4 Polyethylene oxide “PEO-8Z” manufactured by Sumitomo Seika Co., Ltd.
Sample 5 Polyethylene oxide “PEO-3Z” manufactured by Sumitomo Seika Co., Ltd.

Measurement result Sample 1 (peak) average molecular weight 5 million sample 2 (peak) average molecular weight 5.5 million sample 3 (peak) average molecular weight 5 million sample 4 (peak) average molecular weight 2.8 million sample 5 (peak) average molecular weight 1.2 million

The washing conditions in the present invention are shown below.
(Washing process)
After putting 8 pieces of underwear impregnated with cotton seed oil 0.3 (g / sheet) into a washing machine “Ginga VH-360S1” manufactured by Toshiba Corporation (Gunze white shirt round neck L size), water temperature 25 ° C., 4 ° DH 10 L of hard water (Ca / Mg; 7/3) was injected. Thereafter, 50 g of a detergent composition was added. After pre-stirring for 1 minute in the strong stirring mode, it was immersed for 15 minutes and washed for 10 minutes in the strong stirring mode. Then, the foam height (cm) from the washing liquid surface was measured. The measurement of the foam height (foaming property) was carried out by flattening by hand so that the foam thickness was almost uniform on the liquid surface after stirring was stopped, and measured quickly using a ruler.

(Rinsing process)
After the washing liquid used in the washing process was drained, the clothes to be washed were dehydrated with a dehydrator for 5 minutes. Next, 30 L of water temperature 25 ° C., 4 ° DH hard water (Ca / Mg = 7/3) was poured into the washing machine, stirred for 5 minutes, and then the clothes to be washed were dehydrated (5 minutes) (first rinse). The cycle of rinsing, draining and dehydration was repeated under the same conditions, and the rinsing properties were evaluated with the third rinsing water before drainage based on the following evaluation criteria.

6: There are no bubbles on the surface of the rinse water. Moreover, there is no foam on the surface of the washing liquid at the second rinse.
5: There are no bubbles on the surface of the rinse water.
4: A small amount of foam remains on the surface of the rinse water.
3: Less than half bubbles remain on the surface of the rinse water.
2: More than half of the foam remains on the surface of the rinse water. However, the liquid level that is not covered with bubbles is slightly visible.
1: The rinsing water surface is entirely covered with foam.
0: The rinsing water surface is entirely covered with multiple layers of foam.

(Solubility test)
A sample of 1.00 g was put into 1 liter of 4 ° DH hard water (Ca / Mg: 7/3) temperature-controlled at 5 ° C., and a stirrer (with a rotation speed of 800 r / m in a 1 liter beaker (inner diameter 105 mm)). The mixture was stirred for 1 minute at a length of 35 mm and a diameter of 8 mm.
Dissolution rate (%) = {1- (T / S)} × 100
S: Sample input weight (g)
T: When the aqueous solution obtained under the above stirring conditions is subjected to the above sieve (mesh 200 mesh), the dry weight of the dissolved residue of the sample remaining on the sieve (drying condition: 1 hour at a temperature of 105 ° C.) After being held, it was kept in a desiccator (25 ° C.) containing silica gel for 30 minutes) (g).

The solubility level is shown below from the calculated dissolution rate.
A: Dissolution rate 80% to 100%
○: Dissolution rate 50 to less than 80% Δ: Dissolution rate 30 to less than 50% ×: Dissolution rate 0 to less than 30%

(Average particle size)
The average particle size of the detergent composition was determined using a sieve specified in JIS Z 8801. For example, using a 9-stage sieve and a saucer with openings of 2000 μm, 1400 μm, 1000 μm, 710 μm, 500 μm, 355 μm, 250 μm, 180 μm, and 125 μm, a low tap machine (made by HEIKO SEISAKUSHO, tapping: 156 times / minute, rolling: 290 times / minute), 100 g of the sample was shaken for 10 minutes and sieved, and then the saucer and each sieve in the order of 125 μm, 180 μm, 250 μm, 355 μm, 500 μm, 710 μm, 1000 μm, 1400 μm, 2000 μm When the weight frequency is accumulated on the top, the opening of the first sieve with an accumulated weight frequency of 50% or more is set to a μm, and the opening of the sieve that is one step larger than a μm is set to b μm. Of the weight frequency up to the sieve of c% on the sieve of aμm If the weight frequency was d%,
(Average particle size) = 10 ^A
A = (50- (cd / (log b-log a) x log b)) / (d / (log b-log a))
Can be asked according to.
In addition, the sieve to be used was appropriately adjusted so that the particle size distribution of the measured powder could be accurately estimated.

(moisture)
The powder moisture was measured by an infrared moisture meter method. That is, 3 g of a sample was placed on a sample pan having a known weight, and the sample was heated and dried for 3 minutes by an infrared moisture meter (manufactured by Kett Science Laboratory Co., Ltd. (infrared lamp 185W)). After drying, the sample pan and the dried sample were weighed. The water content in the sample was calculated by dividing the difference between the weight of the container before and after drying obtained by the above operation and the sample by the sampled amount and multiplying by 100.

(Detergency test)
<Adjustment of artificial contamination cloth>
An artificially contaminated cloth having the following composition was attached to the cloth to prepare an artificially contaminated cloth. The artificial contamination liquid was attached to the cloth by printing the artificial contamination cloth on the cloth using a gravure roll coater. The process of producing an artificially contaminated cloth by attaching an artificially contaminated liquid to the cloth was performed at a cell volume of gravure roll of 58 cm ³ / m ² , an application rate of 1.0 m / min, a drying temperature of 100 ° C., and a drying time of 1 minute. As the cloth, a cotton gold cloth 2003 cloth (manufactured by Tanigami Shoten) was used.

[Composition of artificial contamination liquid]
Lauric acid 0.44% by weight
Myristic acid 3.09% by weight
Pentadecanoic acid 2.31% by weight
Palmitic acid 6.18% by weight
Heptadecanoic acid 0.44% by weight
Stearic acid 1.57% by weight
Oleic acid 7.75% by weight
Trio Rain 13.06% by weight
N-hexadecyl palmitate 2.18% by weight
6.5% by weight of squalene
Egg white lecithin liquid crystal 1.94% by weight
Kanuma red soil 8.11% by weight
Carbon black 0.01% by weight
Tap water balance

<Detergency test operation>
1.33 g of the detergent composition was dissolved in 1000 mL of water used at 25 ° C. (5 ° DH: Ca / Mg = 7/3). Next, this was transferred to a sample cup of a stirring type detergency tester (Targ-O-Tometer) at 25 ° C., and 5 pieces of the artificial soiled cloth were put and stirred at a rotational speed of 100 ± 5 r / m for 10 minutes. . Next, take out the artificially contaminated cloth, squeeze it lightly by hand so that the water content is 200% by weight or less, put it in 1000 mL of 25 ° C. water (5 ° DH: Ca / Mg = 7/3), and stir Rinsing was performed for 3 minutes using a detergency tester (rotation speed 100 ± 5 r / m), and this rinsing operation was performed twice in total. Next, after air drying, ironing was performed.

<Calculation of cleaning rate>
The reflectance at 550 nm before and after washing (Nippon Denshoku Industries Co., Ltd. 300A) was measured, and the washing rate (%) was calculated by the following formula. The results are shown in Table 4.
Cleaning rate (%) = (L ₂ −L ₁ ) / (L ₀ −L ₁ ) × 100
L ₀ : Reflectance of raw cloth L ₁ : Reflectance of contaminated cloth before washing L ₂ : Reflectivity of contaminated cloth after washing

Unless otherwise stated, the following raw materials were used.
Sodium alkylbenzene sulfonate: Neoperex G-65 (manufactured by Kao Corporation)
Alcohol ethoxylate (C12 (EO6)): Emulgen 108 (manufactured by Kao Corporation)
Sodium alkyl sulfate: EMAL 10 powder (manufactured by Kao Corporation)
Alkanolamide: fatty acid diethanolamide (Aminone PK-02S, manufactured by Kao Corporation)
Soap: A product obtained by neutralizing palmitic acid (Lunac P-95 (manufactured by Kao Corporation)) with caustic soda and spray-drying in advance.
Sodium sulfate: anhydrous neutral sodium sulfate (manufactured by Shikoku Kasei Co., Ltd.)
No. 2 silicate: JIS No. 2 made by Osaka Soda Co., Ltd. Fluorescent dye: Chino Pearl CBS-X (Ciba Geigy AG)
Sodium carbonate: dense ash (average particle size: 290 μm, manufactured by Central Glass Co., Ltd.)
Zeolite: Type A zeolite (average particle size: 3.5 μm, manufactured by Zeobuilder)
Sodium tripolyphosphate: manufactured by Mitsui Chemicals, Inc. Sodium hydrogen carbonate: manufactured by Tosoh Corporation Polyethylene glycol: XG1300 (manufactured by Nippon Shokubai Co., Ltd., average molecular weight 13000)
Carboxymethyl cellulose: F10MC (manufactured by Nippon Paper Chemicals)
Sodium acrylate / sodium maleate copolymer (molar ratio: 7/3, average molecular weight (MW) 70,000): manufactured by Toagosei Co., Ltd. Oil absorbing carrier: Carplex (manufactured by Shionogi Pharmaceutical Co., Ltd.)
Balancing agent: Same as sodium sulfate Aron A-20P: Sodium polyacrylate (average molecular weight 5 million, manufactured by Toagosei Co., Ltd.)
Aron A-50P: acrylamidomethylpropanesulfonic acid / acrylic acid copolymer Na salt (average molecular weight 5.5 million, manufactured by Toagosei Co., Ltd.)
PEO-PF: Polyethylene oxide (average molecular weight 5 million, manufactured by Sumitomo Seika Co., Ltd.)
PEO-8Z: Polyethylene oxide (average molecular weight 2.8 million, manufactured by Sumitomo Seika Co., Ltd.)
PEO-3Z: Polyethylene oxide (average molecular weight 1.2 million, manufactured by Sumitomo Seika Co., Ltd.)
Enzyme mixture: Sabinase 12.0TW (Novozymes), Lipolase 100T (Novozymes), Cellzyme 0.1T (Novozymes), Termamyl 60T (Novozymes) 2: 1: 1: 1 (weight ratio) Defoaming agent: 100% reducing end maltodextrin / maltodextrin (Dextrose equivalence = 5, glucose unit repeat unit = 8) = 40/60 (weight ratio) mixed product used as carrier, manufactured by Dow Corning Powder antifoaming agent prepared by the method described in JP-A-7-70594 with silicone (compound type / FS antifoam)

  Below, the preparation method of a detergent composition is described.

<Comparative Example 1>
In this method, a powder detergent composition was produced by spray drying and dry blending.
That is, 54.2 kg of water was put into a jacketed mixing tank equipped with a stirrer, and after the water temperature reached 37 ° C., 27.7 kg of sodium alkylbenzenesulfonate (purity 65%), No. 2 silicate (purity 40%) 12 .5 kg, acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 25 kg, sodium carbonate 20 kg, zeolite 20 kg And stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, the powder detergent composition precursor A was obtained by spray drying the prepared solution. Next, as a final blending step, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.) with an inclination angle of 30 degrees, a rotation speed of 20 r / m, and 3 minutes, 19.08 kg of the powder detergent composition precursor A, 600 g of balance agent , 40 g of fluorescent dye, 200 g of enzyme mixture, and 80 g of fragrance were dry blended to obtain 20 kg of a powder detergent composition (Comparative Example 1). In addition, the water | moisture content of the obtained powder detergent composition was 5.9 weight%.

<Comparative Examples 2, 4 to 6 and Examples 1 to 6>
Each detergent composition was obtained in the same manner as in Comparative Example 1 except that the following raw materials were dry blended in the final dry blending step in the preparation example of Comparative Example 1 in the previous stage. In addition, the water | moisture content of the obtained powder detergent composition was all 5.9 weight%.

Comparative Example 2: Powder detergent precursor A 19.08 kg, Aron A-20P 10 g, balance agent 590 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Comparative Example 4: Powder detergent precursor A 19.08 kg, antifoaming agent 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Comparative Example 5: Powder detergent precursor A 19.08 kg, soap 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Comparative Example 6: Powder detergent precursor A 18.7 kg, alkanolamide 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 1: Powder detergent precursor A 19.08 kg, Aron A-20P 16 g, balance agent 584 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 2: Powder detergent precursor A 19.08 kg, Aron A-20P 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 3: Powder detergent precursor A 19.08 kg, Aron A-50P 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 4: Powder detergent precursor A 19.08 kg, PEO-8Z 16 g, balance agent 584 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 5: Powder detergent precursor A 19.08 kg, PEO-8Z 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 6: Powder detergent precursor A 19.08 kg, PEO-3Z 600 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g

<Comparative Example 3>
After 37 kg of water was put into a jacketed mixing tank and the water temperature reached 37 ° C., 1.0 kg of carboxymethyl cellulose, 21.0 kg of sodium sulfate and 15 kg of zeolite were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 50 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, powder detergent composition precursor B was obtained by spray drying.

  Next, 12L g of powder detergent composition precursor B, 600 g of sodium carbonate, 30 g of sodium hydrogen carbonate, 330 g of oil absorbing carrier, 90 g of Aron A-20P, and 6 g of fluorescent dye are added to a 20 L readyge mixer (manufactured by Matsuzaka Giken Co., Ltd.). The mixture was added by spraying 540 g of alcohol ethoxylate with stirring. Stirring was continued for 7 minutes. When the mixture became sufficiently uniform, 150 g of zeolite was added, and 12 g of fragrance was added by spraying with further stirring. The rotational speed was decreased, and 30 g of the enzyme mixture was further mixed with low agitation to obtain a powder detergent composition (Comparative Example 3). In addition, the water | moisture content of this composition was 3.4 weight%.

<Comparative Example 7>
In a mixing tank, warm water of 37 ° C., 12.3 kg of sodium alkylbenzenesulfonate (purity 65%), 22.5 kg of silicate (purity 40%), acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) ) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 35.0 kg, sodium carbonate 20.0 kg, zeolite 20.0 kg were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, the powder detergent composition precursor C was obtained by spray drying the prepared solution. Next, as a final blending process, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.), an inclination angle of 30 degrees, a rotation speed of 20 r / m, 3 minutes, the powder detergent composition precursor C 19.08 kg, Aron A- 20 P 16 g, balance agent 584 g, fluorescent dye 40 g, enzyme mixture 200 g, and fragrance 80 g were dry blended to obtain 20 kg of a powder detergent composition (Comparative Example 7). In addition, the water | moisture content of the obtained powder detergent composition was 5.9 weight%.

<Example 7>
In a mixing tank, warm water of 37 ° C., 15.38 kg of sodium alkylbenzenesulfonate (purity 65%), 8.0 kg of sodium alkylsulfate, 22.5 silicate (purity 40%) 12.5 kg, acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 25.0 kg, sodium carbonate 20.0 kg were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, the powder detergent composition precursor D was obtained by spray drying the prepared solution. The powder detergent composition precursor A of the preparation example of Example 2 was replaced with the powder detergent composition precursor D, and the powder detergent composition (Example 7) was obtained in the same procedure. In addition, the water | moisture content of the obtained composition was 5.9 weight%.

<Example 8>
Hot water at 37 ° C., 27.7 kg of sodium alkylbenzenesulfonate (purity 65%), 12.5 kg of No. 2 silicate (purity 40%), acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) ) 2.5 kg, 0.83 kg of polyethylene glycol (purity 60%), 27.0 kg of sodium sulfate, 20.0 kg of sodium carbonate, and 18.0 kg of sodium tripolyphosphate were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, the powder detergent composition precursor E was obtained by spray drying the prepared solution. Next, as a final blending step, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.), an inclination angle of 30 degrees, a rotation speed of 20 r / m, 3 minutes, the powder detergent composition precursor E19.08 kg, PEO-PF 16 g 8 g of antifoaming agent, 176 g of balancing agent, 40 g of fluorescent dye, 200 g of enzyme mixture, 400 g of zeolite, and 80 g of fragrance were dry blended to obtain 20 kg of a powder detergent composition (Example 8). In addition, the water | moisture content of the obtained composition was 5.9 weight%.

<Example 9>
In a mixing tank, warm water at 37 ° C., 27.7 kg of sodium alkylbenzenesulfonate (purity 65%), 0.5 kg of alcohol ethoxylate, 22.5 silicate (purity 40%) 12.5 kg, acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 22.9 kg, sodium carbonate 20.0 kg, zeolite 18.0 kg were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that it was sufficiently mixed, the powder detergent composition precursor F was obtained by spray drying the prepared solution. Next, as a final blending step, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.) with an inclination angle of 30 degrees, a rotation speed of 20 r / m, and 3 minutes, the powder detergent composition precursor F 18.36 kg, PEO-PF 20 g , Balance agent 900 g, fluorescent dye 40 g, enzyme mixture 200 g, zeolite 400 g, and fragrance 80 g were dry blended to obtain 20 kg of a powder detergent composition (Example 9). In addition, the water | moisture content of the obtained composition was 5.9 weight%.

<Comparative Example 8>
19.08 kg of powder detergent composition precursor E described in Example 8, 16 g of PEO-PF, 400 g of zeolite, 40 g of antifoaming agent, 40 g of fluorescent dye, 200 g of enzyme mixture, 144 g of balance agent, 80 g of fragrance are described in Example 9. Dry blending was carried out in the same manner as in the method to obtain 20 kg of a powder detergent composition (Comparative Example 8). In addition, the water | moisture content of the obtained composition was 5.9 weight%.

<Comparative Example 9>
In a mixing tank, warm water of 37 ° C., 27.69 kg of sodium alkylbenzenesulfonate (purity 65%), 5.0 kg of alcohol ethoxylate, 22.5 silicate (purity 40%) 12.5 kg, acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 22.9 kg, sodium carbonate 20.0 kg, zeolite 18.0 kg were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, the powder detergent composition precursor H was obtained by spray drying the prepared solution. Next, as a final blending step, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.), an inclination angle of 30 degrees, a rotation speed of 20 r / m, 3 minutes, the powder detergent composition precursor H 19.26 kg, PEO-PF 20 g, fluorescent dye 40 g, enzyme mixture 200 g, zeolite 400 g, and fragrance 80 g were dry blended to obtain 20 kg of a powder detergent composition (Comparative Example 9). In addition, the water | moisture content of the obtained composition was 5.9 weight%.

<Comparative Example 10>
In a mixing tank, warm water of 37 ° C., sodium alkylbenzene sulfonate (purity 65%) 27.69 kg, No. 2 silicate (purity 40%) 2.5 kg, acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) ) 2.5 kg, polyethylene glycol (purity 60%) 0.83 kg, sodium sulfate 46.82 kg, sodium carbonate 1.0 kg, sodium tripolyphosphate 18.0 kg were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, powder detergent composition precursor I was obtained by spray drying. Next, as a final blending step, a concrete mixer (capacity 40 L, manufactured by Koyo Machine Industry Co., Ltd.), an inclination angle of 30 degrees, a rotation speed of 20 r / m, 3 minutes, the powder detergent composition precursor I 18.46 kg, PEO-PF 16 g, 400 g of zeolite, 40 g of fluorescent dye, 200 g of enzyme mixture, 800 g of balance agent, and 80 g of fragrance were dry blended to obtain 20 kg of a powder detergent composition (Comparative Example 10). In addition, the water | moisture content of the obtained composition was 6.0 weight%.

<Comparative Examples 11 and 12>
Each detergent composition was obtained in the same manner as in Comparative Example 10 except that the following raw materials were dry blended in the final dry blending step in the preparation example of Comparative Example 10 in the previous stage. The water content of the obtained powder detergent composition was 6.0% by weight.

Comparative Example 11 Powder detergent composition precursor I 18.46 kg, zeolite 400 g, sodium carbonate 400 g, balance agent 400 g, PEO-PF 16 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Comparative Example 12 Powder detergent composition precursor I 18.46 kg, zeolite 400 g, sodium carbonate 800 g, PEO-PF 16 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g

<Example 10>
In a mixing tank, warm water at 37 ° C., 27.7 kg of sodium alkylbenzenesulfonate (purity 65%), 5.0 kg of No. 2 silicate (purity 40%), acrylic acid / maleic acid copolymer (molar ratio: 7/3, purity 40%) ) 2.5 kg, 0.83 kg of polyethylene glycol (purity 60%), 30.82 kg of sodium sulfate, 5.0 kg of sodium carbonate, and 18.0 kg of sodium tripolyphosphate were added and stirred for 60 minutes. In addition, the water | moisture content of this slurry preparation liquid was 45 weight%, and the final temperature of this preparation liquid was 50 degreeC. After confirming that mixing was sufficient, powder detergent composition precursor J was obtained by spray drying. Next, as a final blending step, a concrete mixer (capacity 40L, manufactured by Koyo Machine Industry Co., Ltd.), an inclination angle of 30 degrees, a rotation speed of 20 r / m, and 3 minutes, the powder detergent composition precursor J 16.26 kg, PEO-PF 16 g, zeolite 400 g, fluorescent dye 40 g, enzyme mixture 200 g, balance agent 3.0 kg, and fragrance 80 g were dry blended to obtain 20 kg of a powder detergent composition (Example 10). In addition, the water | moisture content of the obtained composition was 6.0 weight%.

<Examples 11 and 12>
In the preparation example of Example 10 in the previous stage, each detergent composition was obtained in the same manner as Example 10 except that the following raw materials were dry blended in the final dry blending step. The water content of the obtained powder detergent composition was 6.0% by weight.

Example 11 Powder detergent composition precursor J 16.26 kg, zeolite 400 g, sodium carbonate 1.4 kg, balance agent 1.6 kg, PEO-PF 16 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g
Example 12 Powder detergent composition precursor J 16.26 kg, zeolite 400 g, sodium carbonate 3.0 kg, PEO-PF 16 g, fluorescent dye 40 g, enzyme mixture 200 g, flavor 80 g

  Tables 1 and 2 show the compositions of the powder detergent compositions obtained in Examples and Comparative Examples. Moreover, the physical properties (foaming property, rinse property, average particle diameter, solubility) of the obtained powder detergent composition are shown in Table 3, and Examples 10-12 and Comparative Examples 10-12 show the cleaning power in Table 4. .

表３の結果より、実施例１〜９で得られた粉末洗剤組成物は、いずれも比較例１〜９のものに比べて、泡立ち性、すすぎ性が共に優れ、かつ溶解性にも優れたものであることがわかる。また、表４の結果より、実施例１０〜１２で得られた粉末洗剤組成物は、比較例１０〜１２のものに比べて洗浄力に優れたものであることがわかる。

From the results shown in Table 3, the powder detergent compositions obtained in Examples 1 to 9 were superior in foaming and rinsing properties, and excellent in solubility, as compared with those in Comparative Examples 1 to 9. It turns out that it is a thing. Moreover, it turns out from the result of Table 4 that the powder detergent composition obtained in Examples 10-12 is excellent in a cleaning power compared with the thing of Comparative Examples 10-12.

  The detergent composition of the present invention is suitably used for washing clothes and the like.

    Thus, for the invention that has been described, it is clear that the same can be varied in many ways. Such changes are not considered to depart from the purpose and scope of the present invention, and all such modifications apparent to those skilled in the art are intended to be included within the scope of the following claims. .

Claims (9)

  It contains 10 to 40% by weight of an alkylbenzene sulfonate, 7 to 40% by weight of an alkali agent, 15% by weight or less of a nonionic surfactant, and 0.07 to 10% by weight of a foam modifier. A detergent composition comprising a water-soluble organic polymer having a molecular weight exceeding 1 million.   Furthermore, the detergent composition of Claim 1 whose content of a clay mineral is 5 weight% or less.   The detergent composition according to claim 1 or 2, wherein the content of the water-soluble organic polymer having an average molecular weight of more than 1 million in the foam modifier is 30% by weight or more.   The detergent composition according to any one of claims 1 to 3, wherein the water-soluble organic polymer is a polyacrylate.   The detergent composition according to any one of claims 1 to 3, wherein the water-soluble organic polymer is polyethylene oxide.   The detergent composition according to claim 5, wherein the nonionic surfactant is 3% by weight or less.   The detergent composition according to any one of claims 1 to 3, wherein the water-soluble organic polymer is polyacrylamide.   A method for washing an object to be cleaned using a washing liquid containing the detergent composition according to claim 1. Use as a foam control agent of water-soluble organic polymers having an average molecular weight exceeding 1 million.
As a use.