KR20230126700A - liquid skin cleanser composition - Google Patents

Abstract

(A) an anionic surfactant, (B) at least one cationic polymer selected from a dimethyldiallylammonium chloride polymer, and a dimethyldiallylammonium chloride-acrylic acid copolymer, and (C) a long-chain alkyl group-containing quaternary ammonium salt and (D) a structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer containing at least one selected from dimethicone and dimethiconol, and the component (B) The molar ratio is 40 mol% or more, and the mass ratio of the total content of the component (B) and the component (C) to the content of the component (A) [{(B) + (C)} / (A)] It is a liquid skin cleanser composition of 0.005 to 0.08.

Description

liquid skin cleanser composition

The present invention relates to liquid skin cleanser compositions.

Conventionally, liquid skin cleanser compositions such as hand soap and body soap have been required to have good foam performance such as foam stability and to impart a moist feeling to the skin after cleansing. In addition, in a hot summer climate, there is a need to provide a liquid skin cleansing composition that can impart a silky feeling without making the skin sticky for a long time after washing and has high moisturizing properties.

In order to improve the condition of the skin after washing, for example, a liquid skin cleanser composition containing a cationic polymer having a fatty acid salt and a structural unit derived from dimethyldiallylammonium chloride has been proposed (for example, patented see Literature 1). However, the proposed liquid skin cleanser composition was not satisfactory for the moist feeling of the skin after towel drying and the durability of the silky feeling of the skin after towel drying.

In addition, a liquid skin cleanser composition containing a fatty acid salt, a cationic polymer, an oil agent, silicone, and a polyhydric alcohol has been proposed (see Patent Document 2, for example). However, the proposed liquid skin cleanser composition was not sufficiently satisfactory for the moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and the durability of the silky feeling of the skin after towel drying.

Therefore, a liquid skin cleanser composition that has excellent foam stability and satisfies all of the moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and the persistence of the silky feeling of the skin after towel drying. provision is requested.

Japanese Unexamined Patent Publication No. 2004-262838 Japanese Unexamined Patent Publication No. 2009-67734

The present invention solves the above problems in the prior art and makes it a subject to achieve the following objects. That is, the present invention is liquid skin that has excellent foam stability and satisfactorily satisfies all of the moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and the persistence of the silky feeling of the skin after towel drying. It aims at providing a detergent composition.

As a result of intensive studies to achieve the above object, the present inventors have found that, in a liquid skin cleanser composition, (A) an anionic surfactant, (B) a dimethyldiallylammonium chloride polymer, and a dimethyldiallylammonium chloride-acrylic acid copolymer. Containing at least one cationic polymer selected from polymers, (C) a quaternary ammonium salt containing a long-chain alkyl group, and (D) at least one selected from dimethicone and dimethiconol, the salt of the above-mentioned component (B) The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium-acrylic acid copolymer is 40 mol% or more, and the (B) component and (C) By setting the mass ratio [{(B)+(C)}/(A)] of the total content of the components to 0.005 to 0.08, the foam stability is excellent, and even in a hot summer climate, there is no stickiness of the skin after towel drying, It has been found that after towel drying, a silky feeling can be imparted to the skin for a long time, and the moist feeling of the skin after towel drying is also excellent.

This invention is based on the said knowledge by this inventor, and means for solving the said subject are as follows. in other words,

<1> (A) an anionic surfactant;

(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer;

(C) a quaternary ammonium salt containing a long-chain alkyl group;

(D) contains at least one selected from dimethicone and dimethiconol;

The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more,

A liquid characterized in that the mass ratio [{(B)+(C)}/(A)] of the total content of the component (B) and the component (C) to the content of the component (A) is 0.005 to 0.08. It is a skin cleansing composition.

<2> The content of the component (A) is 10% by mass to 20% by mass,

The content of the component (B) is 0.2% by mass to 0.8% by mass,

The content of the component (C) is 0.005% by mass to 0.04% by mass,

It is the liquid skin cleanser composition as described in said <1> whose content of said (D)component is 0.02 mass % - 0.4 mass %.

<3> The liquid skin cleanser composition according to any one of <1> to <2>, which is filled in a foamer container.

According to the present invention, the above various problems in the prior art can be solved and the above objects can be achieved, the foam stability is excellent, the skin feels moist after towel drying, there is no stickiness on the skin after towel drying, and It is possible to provide a liquid skin cleanser composition that satisfactorily satisfies all of the persistence of the silky feeling of the skin after towel drying.

(Liquid skin cleanser composition)

The liquid skin cleanser composition of the present invention comprises (A) an anionic surfactant, (B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer, and dimethyldiallylammonium chloride-acrylic acid copolymer, ( C) a long-chain alkyl group-containing quaternary ammonium salt and (D) at least one selected from dimethicone and dimethiconol, and further contains other components as needed.

<(A) anionic surfactant>

The anionic surfactant as the component (A) is mainly contained in order to improve foam stability. In addition, in this specification, "foam stability" means that a foam is maintained without breaking.

The anionic surfactant of the component (A) is not particularly limited and can be appropriately selected according to the purpose, and examples include higher fatty acid salts, polyoxyethylene (POE) alkyl ether sulfates, ether carboxylates, and amino acid-based surfactants. An activator etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together. Among these, higher fatty acid salts are preferable from the viewpoints of foam stability, moist feeling of skin after towel drying, and durability of silky feeling of skin after towel drying.

-Higher Fatty Acids-

The higher fatty acid salt in the component (A) is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include laurate, myristate, palmitate and stearate. These may be used individually by 1 type, and may use 2 or more types together. Among these, higher fatty acid salts containing both laurate and myristic acid salts are preferable from the viewpoints of foam stability, moist feeling of skin after towel drying, and persistence of silky feeling of skin after towel drying.

The counter ion of the higher fatty acid salt is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include alkali metal salts, amine salts, and amino acid salts.

The alkali metal salt is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include sodium salt and potassium salt.

The amine salt is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include ammonium salts; and alkanolamine salts such as monoethanolamine salts, diethanolamine salts, triethanolamine salts, 2-amino-2-methylpropanol, and 2-amino-2-methylpropanediol.

The amino acid salt is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include lysine salts and arginine salts.

Among these, alkali metal salts are preferred, and potassium salts are particularly preferred, from the viewpoint of excellent foam stability.

As the higher fatty acid salts, those synthesized appropriately may be used, or commercially available products may be used.

Commercially available products of the higher fatty acid salts include, for example, NIKKOL potassium laurate LK-120 (potassium laurate, manufactured by Nikko Chemicals Co., Ltd.) and NIKKOL potassium myristate MK-140 (potassium myristate) as commercially available products of the above higher fatty acid salts. , Nikko Chemicals Co., Ltd. make), TYSOF MNK-40 (coconut oil fatty acid potassium/potassium myristate mixed liquid, Nikko Chemicals Co., Ltd. make), etc. are mentioned.

Although the higher fatty acid salt can also be blended as a higher fatty acid salt, it is also possible to obtain a higher fatty acid salt by separately adding the higher fatty acid and a salt that becomes the counter ion such as potassium hydroxide in a mixing tank to neutralize it.

As the higher fatty acid used for preparation of the higher fatty acid salt, an appropriately synthesized one may be used, or a commercial product may be used.

Commercially available products of the higher fatty acid salts include, for example, NAA (registered trademark) -122 (lauric acid, manufactured by Nichiyu Co., Ltd.) and NAA (registered trademark) -142 (myristic acid, manufactured by Nichiyu Co., Ltd.) as trade names. Kaisha Co., Ltd.), NAA (registered trademark)-160 (palmitic acid, manufactured by Nichiyu Co., Ltd.), NAA (registered trademark)-180 (stearic acid, manufactured by Nichiyu Co., Ltd.), and the like.

The content of the laurate is not particularly limited and can be appropriately selected according to the purpose, but is preferably 3% by mass to 12% by mass, and more preferably 7% by mass to 10% by mass based on the total amount of the liquid skin cleanser composition.

The content of the myristate is not particularly limited and can be appropriately selected according to the purpose, but is preferably 4% by mass to 14% by mass, and more preferably 8% by mass to 14% by mass with respect to the total amount of the liquid skin cleanser composition.

The content of the palmitate is not particularly limited and can be appropriately selected according to the purpose, but is preferably 1% by mass to 9% by mass, and more preferably 3% by mass to 9% by mass based on the total amount of the liquid skin cleanser composition.

The content of the stearate is not particularly limited and can be appropriately selected according to the purpose, but is preferably 0.1% by mass to 3% by mass, and more preferably 0.2% by mass to 1% by mass based on the total amount of the liquid skin cleanser composition.

-Polyoxyethylene alkyl ether sulfate-

The polyoxyethylene alkyl ether sulfate in the component (A) is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include compounds represented by the following general formula (A1). The said polyoxyethylene alkyl ether sulfate may be used individually by 1 type, and may use 2 or more types together.

In the general formula (A1), R ⁷ represents an alkyl group, and the number of carbon atoms in the alkyl group portion is preferably 10 to 14.

In the general formula (A1), n represents the average number of added moles of ethylene oxide (E.O.), and the average number of added moles of ethylene oxide is preferably 1 to 5.

In the general formula (A1), X represents an alkali metal or ammonium.

The alkali metal is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include sodium and potassium.

Specific examples of the polyoxyethylene alkyl ether sulfate include polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (2) sodium lauryl ether sulfate (alias: POE (2) sodium laureth sulfate), polyoxyethylene ( 3) Sodium lauryl ether sulfate (alias: POE (3) sodium laureth sulfate), polyoxyethylene (4) sodium lauryl ether sulfate, polyoxyethylene (5) sodium lauryl ether sulfate, polyoxyethylene (3) Alkyl (C12,13) ether sodium sulfate, polyoxyethylene (2) lauryl ether ammonium sulfate, polyoxyethylene (3) lauryl ether ammonium sulfate, and the like.

In addition, the numerical value in ( ) represents the average added mole number (n) of ethylene oxide (E.O.).

As the polyoxyethylene alkyl ether sulfate, an appropriately synthesized one may be used, or a commercial item may be used.

Commercially available products of the polyoxyethylene alkyl ether sulfate include, for example, Texapon (Texapon) (registered trademark) N70 (manufactured by BASF, sodium polyoxyethylene (2) lauryl ether sulfate) as a trade name, Shinorin SPE-1250 ( Nippon Rica Co., Ltd. product, polyoxyethylene (2) sodium lauryl ether sulfate), etc. are mentioned.

-Ether Carboxylate-

The ether carboxylate in the component (A) is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include compounds represented by the following general formula (A2) or (A3). The said ether carboxylate may be used individually by 1 type, and may use 2 or more types together.

In the general formulas (A2) and (A3), R ⁸ represents a straight or branched alkyl or alkenyl group having 5 to 23 carbon atoms, or a phenyl group substituted with a straight or branched chain alkyl or alkenyl group having 5 to 23 carbon atoms. As carbon number of the said R8 moiety shown, 10-14 are preferable.

In the general formula (A2), R ⁹ may be the same or different, and represents an alkylene group having 2 to 4 carbon atoms, and preferably has 2 carbon atoms.

In the general formula (A2), o represents the average number of added moles of 1 to 20 alkylene oxides, and the number of average added moles of the alkylene oxides is preferably 1 to 5.

In the general formulas (A2) and (A3), M ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.

Specific examples of the ether carboxylate represented by the general formula (A2) or (A3) include polyoxyethylene (3) sodium lauryl ether acetate, polyoxyethylene (4) potassium lauryl ether acetate, and sodium lauryl glycol acetate. can be heard

In addition, the numerical value in the above ( ) represents the average number of added moles (o) of alkylene oxide.

As the ether carboxylate, an appropriately synthesized one may be used, or a commercial product may be used.

As a commercial product of the said ether carboxylate, it is a brand name, Enadicol EC-30 (made by Lion Specialty Chemicals Co., Ltd., polyoxyethylene (3) sodium lauryl ether acetate), Beurite LCA-25F (poly Oxyethylene (3) Sodium Lauryl Ether Acetate), Beurite LCA-30D (Polyoxyethylene (3) Sodium Lauryl Ether Acetate), Beurite LCA-H (Polyoxyethylene (4) Lauryl Ether Acetate), Beulite Light LCA-25NH (laureth-4carboxylic acid), Burite SHAA (sodium lauryl glycol carboxylate), Burite LCA (sodium polyoxyethylene (3) lauryl ether acetate) (above, Sanyo Kasei Kogyo Co., Ltd.) manufactured by Shikigai Co., Ltd.), Kao Akipo RLM-45NV (sodium polyoxyethylene (4.5) lauryl ether acetate), Kao Akipo RLM-100NV (sodium polyoxyethylene (10) lauryl ether acetate) (above, Kao Co., Ltd.) Kaisha product) etc. are mentioned.

In addition, the numerical value in the above ( ) represents the average number of added moles (o) of alkylene oxide.

-Amino acid surfactant-

The amino acid-based surfactant in the component (A) is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include compounds represented by the following general formula (A4). The above amino acid surfactants may be used alone or in combination of two or more.

In the formula (A4), R ¹⁰ represents a straight or branched alkyl or alkenyl group having 5 to 23 carbon atoms or a phenyl group substituted with a straight or branched chain alkyl or alkenyl group having 5 to 23 carbon atoms. As carbon number of the said R ^<10> moiety, 8-18 are preferable.

In the general formula (A4), R ¹¹ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

In the general formula (A4), R ¹² and R ¹³ may be the same or different and represent a hydrogen atom or -(CH ₂ ) _m -COOM ² .

In the above general formula (A4), m and n may be the same or different and represent a number from 0 to 20.

In the general formula (A4), M ¹ and M ² may be the same or different and represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.

The amino acid structure of the hydrophilic portion of the amino acid surfactant is not particularly limited and can be appropriately selected according to the purpose, but glycine, glutamic acid, and methylalanine are preferable.

Specific examples of the amino acid-based surfactant represented by the general formula (A4) include N-acyl-glycine and salts thereof such as N-cocoyl-glycine potassium (N-coconut oil fatty acid acylglycine potassium); N-acyl-N-carboxyethyl-glycine and its salts, such as sodium N-myristoyl-N-carboxyethyl-glycine; N-myristoyl-L-sodium glutamate, N-myristoyl-L-potassium glutamate, N-palm fatty acid acyl-L-potassium glutamate, N-palm fatty acid acyl-L-sodium glutamate, N-stearoyl- N-acylglutamic acids such as sodium L-glutamate and salts thereof; and N-lauroyl-N-methyl-β-alanine potassium.

As the amino acid-based surfactant, those synthesized appropriately may be used, or commercially available products may be used.

Examples of commercially available products of the amino acid-based surfactant include Amylite (registered trademark) GCK-11 (N-coconut oil fatty acid acylglycine potassium) and Amirite (registered trademark) GCK-12K (N-coconut oil fatty acid acylglycine) as trade names. potassium), Amylite (registered trademark) GCS-12K (sodium acylglycine of N-coconut oil fatty acid), Amirite (registered trademark) GCS-11 (sodium acylglycine of N-coconut oil fatty acid), Amisoft (registered trademark) CS-11 (N-myristoyl-L-sodium glutamate), Amisoft (registered trademark) CS-22 (N-palm oil fatty acid acyl-L-sodium glutamate), Amisoft (registered trademark) LS-11 (N-lauroyl -L-sodium glutamate), Amisoft (registered trademark) MS-11 (N-myristoyl-L-sodium glutamate), Amisoft (registered trademark) HS-11P (N-stearoyl-L-sodium glutamate) , Amisoft (registered trademark) HS-11P (F) (N-stearoyl-L-sodium glutamate), Amisoft (registered trademark) HS21 (N-stearoyl-L-glutamate disodium), Amylite ( ACS-12 (sodium cocoylalanine) (above, manufactured by Ajinomoto Healthy Supply Co., Ltd.), Amino Surfact (registered trademark) AMMS-P1 (N-myristoyl-L-sodium glutamate) (Asahi Kasei Chemical) Co., Ltd.), NIKKOL sarcosinate MN (sodium myristoylmethylaminoacetate), NIKKOL alaninate LN-30 (sodium lauroylmethyl-β-alanine) (above, manufactured by Nikko Chemicals Co., Ltd.) ), Aranone ACE (coconut oil fatty acid sodium methylalanine), Aranone AME (sodium myristoylmethyl-β-alanine), Aranone ALE (sodium lauroylmethyl-β-alanine) (above, Kawaken Fine Chemicals) Shikigai Co., Ltd.), Enadicol L-30AN (lauroylmethyl-β-alanine sodium) (Lion Specialty Chemicals Co., Ltd.), Softilt AT-L (lauroylmethyl-β-alanine sodium) (Ni Healing Co., Ltd.) etc. are mentioned.

The content of the anionic surfactant of the component (A) is not particularly limited and can be appropriately selected depending on the purpose, but from the viewpoint of foam stability and moist feeling of the skin after towel drying, it is 8% by mass relative to the total amount of the liquid skin cleanser composition. -30 mass % is preferable, and 10 mass % - 20 mass % is more preferable. When the content of the component (A) is 8% by mass or more, the foam stability and moist feeling of the skin after towel-drying are good, and when the content is 30% by mass or less, the moist feeling of the skin after towel-drying is good.

<(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer>

The cationic polymer as the component (B) is at least one selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and mainly improves foam stability and moist feeling of the skin after towel drying. contained in order to

The dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) is represented by the following general formula (B1).

However, in the general formula (B1), n and m represent the molar ratio (mol%) of each structural unit, n+m=100, and m is 40 mol% or more.

Among the components (B), the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 65 mol% or more in terms of foam stability and moist feeling of skin after towel drying. This is preferable, and 90 mol% or more is more preferable.

The above dimethyldiallylammonium chloride-acrylic acid copolymer may be used alone or in combination of two or more.

The molar ratio of each structural unit in the dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) can be determined by measuring by nuclear magnetic resonance (NMR) under the following measurement conditions.

[Measuring conditions]

Solvent: heavy water (D ₂ O)

Measuring device: JNM-LA300 (300 MHz, manufactured by Nippon Electronics Co., Ltd.)

The weight average molecular weight of the cationic polymer of the component (B) is not particularly limited and can be appropriately selected according to the purpose, but is preferably 10,000 to 1,000,000, and more preferably 15,000 to 450,000 from the viewpoint of moist feeling of the skin after towel drying. desirable.

The weight average molecular weight of the cationic polymer of the component (B) is, for example, SEC-MALLS-RI system (measurement conditions: column: Tosoh Corporation TSKgel α series α-M column 30 cm, solvent: sodium nitrate 0.3M aqueous solution ) can be measured.

The viscosity at 25°C of a solution containing 30% by mass to 44% by mass of the solid content of the cationic polymer of the component (B) is preferably 10 mPa s to 15,000 mPa s, more preferably 20 mPa s to 12,000 mPa s. do.

The said viscosity can be measured using, for example, a Brookfield viscometer LVF (manufactured by Brookfield Corporation).

An appropriately synthesized cationic polymer of the component (B) may be used, or a commercial product may be used. As a commercial item of the cationic polymer of the said (B) component, the following etc. are mentioned as a brand name, for example.

MERQUAT 100 (ingredient name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., solid content of 39 mass% to 44 mass%, viscosity at 25° C.: 8,000 mPa s to 12,000 mPa s, weight average molecular weight: 150,000).

The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. Spindle No. Using the rotor of 3, it can measure on the condition of 6 revolutions/minute.

Marcote 106 (ingredient name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., solid content of 30% by mass to 36% by mass, viscosity at 25°C: 20mPa s to 65mPa s, weight average molecular weight 15,000) .

The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. Spindle No. 1 can be used and the measurement can be made under the condition of 60 revolutions/minute.

Markot 280 (ingredient name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., solid content of 39 mass% to 43 mass%, viscosity at 25 ° C.: 3,000 mPa s to 6,000 mPa s, Weight average molecular weight 450,000, n:m = 35:65 (molar ratio) in the above general formula (1), molar ratio of structural units derived from dimethyldiallylammonium chloride is 65 mol%).

The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. Spindle No. Using the rotor of 4, it can measure on the condition of 60 revolutions/minute.

Markot 295 (ingredient name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., solid content of 35 mass% to 40 mass%, viscosity at 25 ° C.: 3,500 mPa s to 9,000 mPa s, Weight average molecular weight 190,000, n:m = 5:95 (molar ratio) in the above general formula (1), molar ratio of structural units derived from dimethyldiallylammonium chloride is 95 mol%).

The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. Spindle No. Using the rotor of 4, it can measure on the condition of 30 revolutions/minute.

Among these, as the cationic polymer of the component (B), Marcoat 100, Marcoat 280, and Marcoat 295 are preferable from the viewpoint of foam stability and moist feeling of the skin after towel drying.

The content of the cationic polymer of the component (B) is not particularly limited and can be appropriately selected according to the purpose, but from the viewpoints of foam stability, moist feeling of the skin after towel drying, and no stickiness of the skin after towel drying. 0.1 mass % - 1 mass % are preferable with respect to the liquid skin cleanser composition whole quantity, and 0.2 mass % - 0.8 mass % are more preferable. When the content of the component (B) is 0.1% by mass or more, the foam stability and moist feeling of the skin after towel-drying are good, and when the content is 1% by mass or less, the non-stickiness of the skin after towel-drying is good.

<(C) Quaternary Ammonium Salt Containing Long-Chain Alkyl Group>

The long-chain alkyl group-containing quaternary ammonium salt as the above-mentioned component (C) is mainly contained in order to improve the durability of the silky feeling of the skin after towel drying.

The number of carbon atoms of the long-chain alkyl group in the long-chain alkyl group-containing quaternary ammonium salt of the component (C) is not particularly limited and can be appropriately selected according to the purpose, but is preferably 6 to 24.

The number of long-chain alkyl groups in the long-chain alkyl group-containing quaternary ammonium salt of component (C) is not particularly limited and can be appropriately selected according to the purpose, but one or two are preferred, and one is more preferred.

Specific examples of the quaternary ammonium salt containing one long-chain alkyl group in the component (C) include lauryltrimethylammonium salt, cetyltrimethylammonium salt, stearyltrimethylammonium salt, behenyltrimethylammonium salt, cetyldimethylbenzylammonium salt, and stearyldimethylbenzylammonium salt. , behenyl dimethyl benzyl ammonium salt, etc. are mentioned.

Specific examples of the long-chain alkyl group-containing quaternary ammonium salt in the component (C), in which the number of long-chain alkyl groups is two, include dicetyldimethylammonium salt, distearyldimethylammonium salt, dibehenyldimethylammonium salt, dicetylmethylbenzylammonium salt, distearylmethylbenzylammonium salt, A dibehenylmethylbenzylammonium salt etc. are mentioned.

Specific examples of the long-chain alkyl group-containing quaternary ammonium salt having three long-chain alkyl groups in the component (C) include tricetylmethylammonium salt, tristearylmethylammonium salt, and tribehenylmethylammonium salt.

These may be used individually by 1 type, and may use 2 or more types together. Among these, cetyltrimethylammonium salts, stearyltrimethylammonium salts, behenyltrimethylammonium salts, and lauryltrimethylammonium salts are preferable from the viewpoint of the persistence of skin silkiness after towel drying.

As the long-chain alkyl group-containing quaternary ammonium salt of the component (C), an appropriately synthesized one may be used, or a commercial item may be used.

Examples of commercially available products of the long-chain alkyl group-containing quaternary ammonium salts of the component (C) include, as trade names, Cotamine 60W (cetyltrimethylammonium chloride), Cotamine 24P (lauryltrimethylammonium chloride), and Cotamine 86P conc (sodium chloride). Aryltrimethylammonium), Kotamine 86W (stearyltrimethylammonium chloride) (above, manufactured by Kao Co., Ltd.), VARISOFT BT85 PELLETS (behentrimonium chloride isopropanol, manufactured by Evonik), NIKKOL CA-2450 (stearyltrimethylammonium chloride solution) ), NIKKOL CA-2330 (cetyltrimethylammonium chloride aqueous solution), NIKKOL CA-2580 (behenyltrimethylammonium chloride solution) (above, manufactured by Nikko Chemicals Co., Ltd.), Carchinal STC-25W (stearyltrimethylammonium chloride, Toho Chemical Industry Co., Ltd.), Cationic AB-250AQ (stearyltrimethylammonium chloride, Nichiyu Co., Ltd.), Lipocado C-50 (coconut alkyltrimethylammonium chloride), Lipocado T-28 ( Alkyl chloride (C _16-18 ) Trimethylammonium), Lipocado T-30 (Alkyl chloride (C _14-18 ) Trimethylammonium), Lipocado T-50 (Alkyl chloride (C _14-18 ) Trimethylammonium), Lipocado T-800 (alkyl (C _16-18 )trimethylammonium chloride), lipocardo 16-29 (cetyltrimethylammonium chloride), lipocardo 16-50E (cetyltrimethylammonium chloride), lipocardo 18- 63 (alkyl chloride (C _16-18 ) trimethylammonium), lipocardo 22-80 (behenyltrimethylammonium chloride), lipocardo CB-50 (alkyl (C _8-18 ) dimethylbenzylammonium) (above, Lion Specialty Chemicals Co., Ltd.) etc. are mentioned.

The content of the long-chain alkyl group-containing quaternary ammonium salt of the component (C) is not particularly limited and can be appropriately selected according to the purpose. 0.001 mass % - 0.05 mass % are preferable with respect to the liquid skin cleanser composition whole amount, and 0.005 mass % - 0.04 mass % are more preferable. When the content of the component (C) is 0.001% by mass or more, the silky feeling of the skin after towel-drying is good, and when the content is 0.05% by mass or less, the skin after towel-drying is free from stickiness.

<Mass Ratio [{(B)+(C)}/(A)]>

The mass ratio [{(B)+(C)}/(A)] of the total content (mass%) of the component (B) and the component (C) relative to the content (mass%) of the component (A) is It is 0.005 to 0.08 in terms of the moist feeling of the skin after drying and the durability of the silky feeling of the skin after towel drying, but 0.01 to 0.06 is preferable. If the mass ratio [{(B)+(C)}/(A)] is less than 0.005, the moist feeling of the skin after towel-drying and the durability of the silky feeling of the skin after towel-drying become insufficient, and if it exceeds 0.08, , the non-stickiness of the skin after towel drying becomes insufficient.

<(D) at least one selected from dimethicone and dimethiconol>

At least one selected from dimethicone and dimethiconol as the component (D) is mainly contained in order to improve the durability of skin silkiness after towel drying.

As for dimethicone in the said (D) component, what is represented by the following general formula (D1) etc. are mentioned, for example.

However, in the above general formula (D1), a represents the molar ratio (mol%) of the structural unit, and is 3 to 20,000.

The kinematic viscosity at 25°C of at least one selected from dimethicone and dimethiconol of the component (D) is not particularly limited and can be appropriately selected according to the purpose. From this point, 1.5 cSt to 100,000 cSt are preferable, and 2 cSt to 1,000 cSt are more preferable.

The said kinematic viscosity can be measured by the method shown below, for example. In addition, although the following measurement method demonstrates the kinematic viscosity of dimethicone, the kinematic viscosity of dimethicone can be similarly measured.

A toluene solution of dimethicone at a concentration of 1 g/100 mL is prepared, and the specific viscosity η _sp (25°C) is obtained by the following formula (1). Next, it is substituted into Huggins' relational expression shown in the following formula (2) to obtain the intrinsic viscosity [η]. As the Huggins constant K', the one described in Nakamuta, Ilhwa, 77,588,1956 is used. Next, [η] is substituted into the formula of A. Kolorlov et al. (see Doklady Akad. Nauk. USSR8965.1953) shown in the following formula (3) to obtain the molecular weight M. Finally, the kinematic viscosity η of dimethicone can be obtained by substituting M into the formula of AJBrry shown in formula (4) below (see J.Appl.physics.17.1020.1946).

η _sp =(η/η ₀ )-1 Equation (1)

η _sp = [η] + K' [η] 2 Equation (2)

[η] = 2.15 × 10 ^-4 M ^0.65 Equation (3)

logη=1.00+0.0123M ^0.5 Equation (4)

In the above formula (1), "η ₀ " represents the viscosity of toluene, and "η" represents the viscosity of the solution. The above “η ₀ ” and the above “η” are measured in accordance with Cosmetic Ingredient Standards General Test Method Viscosity Measurement Method 1.

As for the component (D), what was suitably synthesized may be used, or a commercial item may be used.

As a commercial item of the said (D) component, it is a brand name, for example, KF-96L series, KF-96A series, KF-6011, KF-615A, KF-945A (above, Shin-Etsu Chemical Co., Ltd. make), TSF451 Series, SILSOFT series, SF3802A (above, manufactured by Momentive), DOWSIL SH200 series, DOWSIL BY11-007, DOWSIL BY11-026, DOWSIL BY25-320, XIAMETER 1503Fluid, DOWSIL SS-2804, DOWSIL FZ-2222, DOWSIL FZ-2250 (Above, Toray Dow Corning Co., Ltd. make) etc. are mentioned.

In addition, as the component (D), a silicone emulsion may be used. Examples of the silicone emulsion include, as trade names, DOWSIL BY22-068, DOWSIL BY22-080, DOWSIL BY22-034, DOWSIL BY22-050, and DOWSIL BY22-060 (above, manufactured by Toray Dow Corning). is not limited to that of

The content of at least one selected from dimethicone and dimethiconol in the component (D) is not particularly limited and can be appropriately selected according to the purpose, but the moist feeling of the skin after towel drying and the threadiness of the skin after towel drying 0.01 mass % - 0.5 mass % are preferable with respect to the liquid skin cleanser composition whole amount, and 0.02 mass % - 0.4 mass % are more preferable from the point of durability of key feeling. When the content of the above component (D) is 0.01% by mass or more, the moist feeling of the skin after towel-drying and the persistence of the silky feeling of the skin after towel-drying are good, and when the content is 0.5% by mass or less, the skin after towel-drying is sticky. none is good

<Other ingredients>

In the liquid skin cleanser composition of the present invention, in addition to each component of the component (A), component (B), component (C), and component (D), as necessary, within a range not impairing the present invention, Components commonly used in liquid skin cleanser compositions and the like can be formulated as other components.

The other components are not particularly limited and can be appropriately selected according to the purpose, and examples include surfactants other than the component (A) and component (C), water-soluble polymers and oil components other than component (B), Silicones other than the above component (D), alcohols, lanolin derivatives, protein derivatives, amino acids, drugs such as vitamins, bactericides, preservatives, pH adjusters, antioxidants, metal sequestering agents, animal and plant extracts or their derivatives, chelating agents, Moisturizers, thickeners, ultraviolet absorbers or scattering agents, pigments, flavoring agents, pigments, water-insoluble polymer compound powders, and the like are exemplified.

The oil component is not particularly limited and can be appropriately selected according to the purpose, and examples include plant oils such as castor oil, olive oil, cacao oil, hydrogenated palm oil, camellia oil, coconut oil, wood wax, jojoba oil, grapeseed oil, and avocado oil, and ester compounds thereof; animal fats and oils such as mink oil and egg yolk oil; waxes such as beeswax, spermaceti, lanolin, hydrogenated lanolin, carnauba wax, and candelilla wax; hydrocarbons such as liquid paraffin, squalane, microcrystalline wax, ceresin wax, paraffin wax, and petrolatum; natural and synthetic fatty acids such as oleic acid, isostearic acid, and behenic acid; Glycerol tri-2-ethylhexanoic acid ester, 2-ethylhexylstearate, butyl stearate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyldodecyl oleate, cholesterol oleate, etc. Ester etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together.

The alcohols are not particularly limited and can be appropriately selected according to the purpose, and may be lower alcohols or higher alcohols. Specific examples of the alcohol include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, and lauryl alcohol. These may be used individually by 1 type, and may use 2 or more types together.

The moisturizing agent is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include isoprene glycol, 1,2-pentanediol, diethylene glycol, diethylene glycol monoalkyl ether, polypropylene glycol, polypropylene glycol, and curing. Castor oil (30E.O.), diglycerol, triglycerol, polyglycerol, etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together.

The thickener is not particularly limited and can be appropriately selected according to the purpose. For example, natural polymers such as sodium alginate, xanthan gum, aluminum silicate, quince seed extract, tragantham gum, starch, methylcellulose, hydrogel Semi-synthetic polymers such as oxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, and soluble starch, carboxyvinyl polymer, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, methacryloylethyl betaine methacrylic acid ester air Synthetic high molecular compounds, such as a polymer, are mentioned. These may be used individually by 1 type, and may use 2 or more types together.

The preservative is not particularly limited and can be appropriately selected according to the purpose, and examples include benzoate, sorbate, dehydroacetate, paraoxybenzoic acid ester, 2,4,4'-trichloro-2'-hydro Roxydiphenyl ether, 3,4,4'-trichlorocarbanilide, benzalkonium chloride, hinokitiol, resorcin, methylchloroisothiazolinone/methylisothiazolinone solution (trade names: Quezon CG, Rom And/ Haas Japan Co., Ltd.), salicylic acid, pentanediol, phenoxyethanol, ethanol, etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together.

The antioxidant is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include dibutylhydroxytoluene, butylhydroxyanisole, and ascorbic acid. These may be used individually by 1 type, and may use 2 or more types together.

The chelating agent is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include edetic acid, disodium edetic acid, ethylenediamine tetraacetate, hexametaphosphate, and gluconic acid. These may be used individually by 1 type, and may use 2 or more types together.

The pH adjuster is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include sodium hydroxide, potassium hydroxide, citric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanolamine, phosphoric acid, glycolic acid, hydrochloric acid, and the like. there is. These may be used individually by 1 type, and may use 2 or more types together.

The ultraviolet absorber or scattering agent is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include 2-hydroxy-4-methoxybenzophenone, octyldimethylparaaminobenzoate, ethylhexylparamethoxycyanate, and the like. Mate, titanium oxide, kaolin, talc, etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together.

The above vitamins are not particularly limited and can be appropriately selected according to the purpose, and examples include vitamin A, vitamin B group, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, and carnitine. , ferulic acid, γ-oryzanol, α-lipoic acid, orotic acid, and derivatives thereof, and the like. These may be used individually by 1 type, and may use 2 or more types together.

The above-mentioned amino acids are not particularly limited and can be appropriately selected according to the purpose. For example, glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, aspartic acid, glutamic acid, arginine, histidine, lysine, and derivatives thereof; and the like. These may be used individually by 1 type, and may use 2 or more types together.

The water-insoluble polymer compound powder is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include inorganic powder, clay mineral, nylon, and polyethylene. These may be used individually by 1 type, and may use 2 or more types together.

As for the above other components, those synthesized appropriately may be used, or commercially available products may be used.

The content of the other components relative to the total amount of the liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the purpose.

-pH-

The pH of the liquid skin cleanser composition at 25°C is not particularly limited and can be appropriately selected according to the purpose, but is preferably 9.5 to 11.0 and more preferably 9.8 to 10.6.

The pH can be measured using, for example, a glass electrode color hydrogen ion concentration indicator HM-30R (electrode type GST-5721 manufactured by TOA DKK).

-viscosity-

The viscosity of the liquid skin cleanser composition at 25°C is not particularly limited and can be appropriately selected depending on the container to be used, but is preferably 4 mPa·s to 40 mPa·s, and more preferably 8 mPa·s to 30 mPa·s. .

For example, when a pump former container capable of discharging bubbles by pushing down the nozzle portion and a porous film body of 305 mesh and 200 mesh each are used, the viscosity of the liquid skin cleanser composition under the temperature conditions used is preferably 30 mPa·s or less, and more preferably 25 mPa·s or less.

The viscosity was measured using, for example, a BM-type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at a sample temperature of 25° C. It can be measured by measuring the viscosity after 1 minute with the rotor of No. 1.

-courage-

The liquid skin cleanser composition of the present invention is not particularly limited, and is used after being filled in an ordinary container.

The container is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include a pump dispenser container, a tube, a foamer container, and a pouch-shaped container. Among these, a former container is preferable.

The foamer container is not particularly limited and can be appropriately selected from known foamer containers, and examples thereof include a non-gas type bubble discharge container, an aerosol container using a propellant and a pressure-resistant container, and the like. Among these, a non-gas type bubble discharge container is preferable.

The non-gas type bubble discharge container is not particularly limited as long as the liquid skin cleanser composition can be mixed with air and discharged in a foamed state, and can be appropriately selected according to the purpose. A squeeze former container capable of discharging bubbles by squeezing, a pump former container capable of discharging bubbles by pressing down a nozzle portion, and the like are exemplified. As such a former container, those manufactured by Daiwa Seikan Co., Ltd., manufactured by Yoshino Kogyosho Co., Ltd., and the like can be used. More specifically, as a former container, the former container etc. which were described in Unexamined-Japanese-Patent No. 7-315463, Unexamined-Japanese-Patent No. 8-230961, and Unexamined-Japanese-Patent No. 2005-193972 can be used.

The non-gas type bubble discharge container has a bubble forming member, specifically, a porous film body for forming bubbles (preferably a plastic material such as nylon, polyester, or polyolefin), and the liquid skin cleanser composition described above. Bubbles are formed by passing through this porous membrane body.

The mesh of the porous membrane body is not particularly limited and can be appropriately selected according to the purpose, but preferably 100 mesh or more, more preferably 100 mesh to 400 mesh, and particularly preferably 200 mesh to 305 mesh.

The number of sheets of the porous membrane body is not particularly limited and can be appropriately selected according to the purpose, but from the viewpoint of improving foam performance, 2 to 4 sheets are preferable.

-Manufacturing method-

The method for producing the liquid skin cleanser composition is not particularly limited and may be appropriately selected depending on the purpose, and examples thereof include the component (A), component (B), component (C), and component (D). , If necessary, it can be obtained by mixing the above other components and purified water (blended as a residual amount so that the entire liquid skin cleanser composition is 100% by mass).

Specifically, the component (A) was dissolved in purified water heated to 70 ° C. to 80 ° C., and after cooling to 40 ° C. or lower, the component (B), the component (C) and the component (D) It can be prepared by adding a silicone emulsion containing

The silicone emulsion is mixed while heating the component (D) to 70°C. Further, the above component (C) and purified water are mixed and dissolved while separately heating at 70°C. It can obtain by adding the mixture containing the said (C)component to the mixture containing the said (D)component, and cooling to 30 degreeC.

The liquid skin cleanser composition may be prepared using an apparatus. The device is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include a stirring device having a shear force and having a stirring blade capable of mixing the whole.

There is no restriction|limiting in particular as said stirring blade, It can select suitably according to the purpose, For example, a propeller, a turbine, a disper, etc. are mentioned.

-Usage-

The use site of the liquid skin cleanser composition is not particularly limited, and may be appropriately selected according to the purpose, and for example, it can be used for the whole body, face, hands, and the like.

The method of using the liquid skin cleanser composition is not particularly limited and may be appropriately selected according to the purpose, but it is preferable to use it by filling it in a foamer container and discharging it in the form of bubbles.

Since the liquid skin cleanser composition has excellent foam stability and satisfies all of the moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and the persistence of the silky feeling of the skin after towel drying, For example, it can be used for body shampoo, body soap, face wash foam, hand soap, foam hand soap, cleansing foam, makeup remover, etc., and can be especially suitably used for body soap.

Example

The present invention will be specifically described below by way of Examples and Comparative Examples, but the present invention is not limited to these Examples at all.

The content of each component described in Examples and Comparative Examples is expressed as "% by mass", the total amount is 100% by mass, and all are values obtained in terms of pure parts. In addition, the mass ratio [(B)+(C)/(A)] of the total content (mass%) of (B) component and (C) component to the content (mass%) of (A) component is the fourth decimal place. Positions were rounded off, and up to the third position below the decimal point were obtained and described.

(Examples 1 to 33 and Comparative Examples 1 to 11)

Liquid skin cleanser compositions having the compositions and contents shown in Tables 1 to 7 below were prepared according to the following methods.

(D) component or the comparison component of (D) component, polyoxyethylene (POE) (20) cetyl ether, which is a common component, and propylene glycol were mixed while heating at 70°C to obtain a mixture 1. Further, component (C) and purified water were mixed and dissolved separately while heating at 70°C to obtain a mixture 2. After adding the said mixture 2 to the said mixture 1 and mixing with a homomixer, it cooled to 30 degreeC, stirring, and prepared the silicone emulsion.

Purified water in an amount of 45% by mass of the amount required in the finally obtained liquid skin cleanser composition is heated to 70 ° C. to 80 ° C., to which component (A) is added and dissolved, and cooled to 40 ° C. or lower , component (B) and the silicone emulsion were added. After that, when the pH is less than the predetermined pH (pH10.0), potassium hydroxide as a common component is added, and after adjusting the pH to 10.0, lauric acid amide propyl betaine and fragrance are added, and the total amount is 100% by mass Purified water was added as much as possible to obtain the respective liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 11.

Moreover, when preparing each said liquid skin cleanser composition, it stirred using the three-one motor (HEIDON BL1200, manufactured by Shinto Chemical Co., Ltd.) using the propeller as a stirring blade. In addition, pH was measured at 25 degreeC using the pH meter (HM-30R, made by TOA DKK).

Each of the obtained liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 11 was filled into a container with a foamer pump dispenser (discharge amount: 3 mL, manufactured by Yoshino Kogyosho Co., Ltd.), and used for the following evaluation.

For each liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 11, "foam stability", "moist feeling of skin after towel drying", "no stickiness of skin after towel drying" were performed as follows. ”, and “continuity of silky feeling of the skin after towel drying” were evaluated and judged. The results are shown in Tables 1 to 7 below.

<Foam stability>

10 expert evaluators took 5 pushes (about 15 g) of each liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 11 on the palm, and after washing the whole body with their hands, observed "foam stability", and based on the following evaluation criteria evaluated based on The result was determined by obtaining the average rating value of the above 10 professional evaluators and based on the evaluation criteria for the average rating value below.

-Evaluation criteria of "bubble stability"-

4 points: After washing the body, most of the foam on the body remains at the beginning of washing

3 points: After washing the body, about 80% to 50% of the foam remaining on the body at the beginning of washing

2 points: When the body is completely washed, at the beginning of washing, about 20 to 40 percent of the foam remaining on the body remains.

1 point: After washing the body, almost no foam remains on the body at the beginning of washing

-Judgment criteria of "bubble stability"-

◎: The average rating is 3.5 or more and 4.0 or less

○: The average rating value is 3.0 or more and less than 3.5

△: Average rating value is 2.0 or more and less than 3.0

×: average score is less than 2.0 points

<Moist feeling of skin after towel drying>

10 expert evaluators took 5 pushes (about 15 g) of each liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 11 in their hands, washed the whole body with their hands, rinsed with warm water at 40 ° C, and dried with a towel. . Thereafter, after stabilizing in a constant temperature room at 38°C for 30 minutes, "moist feeling of the skin after towel drying" was evaluated based on the following evaluation criteria. The result was determined by obtaining the average rating value of the above 10 professional evaluators and based on the evaluation criteria for the average rating value below.

-Evaluation Criteria for "Moist feeling of skin after towel drying"-

4 points: Moist feeling is felt strongly

3 points: feels moist

2 points: Somewhat moist feeling

1 point: Does not feel moist

-Judgment Criteria for "Moist feeling of skin after towel drying"-

◎: The average rating is 3.5 or more and 4.0 or less

○: The average rating value is 3.0 or more and less than 3.5

△: Average rating value is 2.0 or more and less than 3.0

×: The average score is less than 2.0 points

<No stickiness on the skin after towel drying>

10 expert evaluators took 5 pushes (about 15 g) of each liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 11 in their hands, washed the whole body with their hands, rinsed with warm water at 40 ° C, and dried with a towel. . Then, after stabilizing for 30 minutes in a constant temperature room at 38°C, "no stickiness of the skin after towel drying" was evaluated based on the following evaluation criteria. The result was determined by obtaining the average rating value of the above 10 professional evaluators and based on the evaluation criteria for the average rating value below.

-Evaluation criteria for "no stickiness on the skin after towel drying"-

4 points: No stickiness at all

3 points: Somewhat sticky

2 points: Feels quite sticky

1 point: feels very sticky

-Judgment criteria for "no stickiness on the skin after towel drying"-

◎: The average rating is 3.5 or more and 4.0 or less

○: The average rating value is 3.0 or more and less than 3.5

△: Average rating value is 2.0 or more and less than 3.0

×: The average score is less than 2.0 points

<Sustainability of silky feeling of the skin after towel drying>

10 professional evaluators took 5 pushes (about 15g) of each liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 11 in their hands, washed the whole body with their hands, rinsed with warm water at 40 ° C, and dried with a towel. Then, after stabilizing in a room at 30°C for 8 hours, the "sustainability of the silky feeling of the skin after towel drying" was evaluated based on the following evaluation criteria. The result was determined by obtaining the average rating value of the above 10 professional evaluators and based on the evaluation criteria for the average rating value below.

-Evaluation criteria for "continuity of silky feeling of skin after towel drying"-

4 points: A silky feeling is felt strongly

3 points: I feel a silky feeling

2 points: Feel a little silky

1 point: I do not feel a silky feeling

-Judgment Criteria for "Skin Silky Persistence After Towel Drying"-

◎: The average rating is 3.5 or more and 4.0 or less

○: The average rating value is 3.0 or more and less than 3.5

△: Average rating value is 2.0 or more and less than 3.0

×: average score is less than 2.0 points

Details of each component used in Examples 1 to 33 and Comparative Examples 1 to 11 are shown in Table 8 below.

*1: Potassium myristate was prepared by neutralizing myristic acid (NAA-142, manufactured by Nichiyu Co., Ltd.) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potassium).

*2: Potassium laurate was prepared by neutralizing lauric acid (NAA-122, manufactured by Nichiyu Co., Ltd.) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potassium).

*3: Dimethyldiallylammonium chloride/acrylic acid copolymer (Markot 550PR, manufactured by Nippon Lubrizol Co., Ltd.) is a high molecular compound having a structure represented by the following general formula (1), n is 0, m is 30, and z is 70.

*4: Acrylic acid/dimethyldiallylammonium chloride/acrylamide copolymer (Markot 3330PR, manufactured by Nippon Lubrizol Co., Ltd.) is a high molecular compound having a structure represented by the following general formula (1), and is represented by the following general formula ( In 1), n is 34, m is 31, and z is 35.

However, in the above general formula (1), n, m, and z represent the molar ratio (mol%) of each structural unit, and n+m=100.

The liquid skin cleanser composition can be suitably used in a foamer container, has excellent foam stability, has a moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and a silky feeling of the skin after towel drying. Since it satisfies all of the longevity, it can be used, for example, for body shampoo, body soap, face wash foam, hand soap, foam hand soap, cleansing foam, makeup remover, etc., and can be used particularly suitably for body soap.

Claims (3)

(A) with an anionic surfactant;
(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer;
(C) a quaternary ammonium salt containing a long-chain alkyl group;
(D) contains at least one selected from dimethicone and dimethiconol;
The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more,
A liquid characterized in that the mass ratio [{(B)+(C)}/(A)] of the total content of the component (B) and the component (C) to the content of the component (A) is 0.005 to 0.08. Skin cleansing composition. According to claim 1,
The content of the component (A) is 10% by mass to 20% by mass,
The content of the component (B) is 0.2% by mass to 0.8% by mass,
The content of the component (C) is 0.005% by mass to 0.04% by mass,
The liquid skin cleanser composition whose content of the said (D) component is 0.02 mass % - 0.4 mass %. According to claim 1 or 2,
A liquid skin cleanser composition filled in a foamer container.