WO2023276272A1

WO2023276272A1 - Liquid skin cleanser composition

Info

Publication number: WO2023276272A1
Application number: PCT/JP2022/008683
Authority: WO
Inventors: 舞平田
Original assignee: ライオン株式会社
Priority date: 2021-06-30
Filing date: 2022-03-01
Publication date: 2023-01-05
Also published as: JP2023006355A; CN117295487A; KR20240026877A

Abstract

Provided is a liquid skin cleanser composition characterized by comprising: (A) an anionic surfactant; (B) at least one type of cationic polymer selected from among a dimethyldiallyl ammonium chloride polymer and a dimethyldiallyl ammonium chloride-acrylic acid copolymer; and (C) a potassium phosphate salt, wherein the molar fraction of a structural unit derived from dimethyldiallyl ammonium chloride in the dimethyldiallyl ammonium chloride-acrylic acid copolymer is not less than 40%, the mass ratio [(B)/(C)] of the content of the component (B) to the content of the component (C) is 0.2-8.0, and the liquid skin cleanser composition is filled into a foamer container.

Description

Liquid skin cleanser composition

The present invention relates to a liquid skin cleanser composition.

Conventionally, liquid skin cleansing compositions such as hand soaps and body soaps have been desired to have good foam performance such as foam retention and to impart a moist feeling to the skin after cleansing. In addition, while the majority of consumers used to wash their bodies by soaking liquid body soap in cleaning tools such as nylon towels and cotton towels, in recent years, foamy body soap expelled from foamer containers has become more popular. Demands are increasing for uses such as washing the body by including soap in washing tools. When washing the body by soaking the discharged foamy body soap in a cleaning tool, the foam performance (the speed of foaming and the density of the foam) and the moist feeling of the skin after washing are fully satisfactory. It was nothing.

A liquid skin containing a fatty acid salt and a cationic polymer having a structural unit derived from dimethyldiallylammonium chloride for the purpose of imparting good skin feel (moisturizing, smoothness, etc.) after cleansing and good foam performance. A detergent composition has been proposed (see, for example, Patent Document 1). However, the liquid skin cleanser composition in the above proposal has a rapid lathering rate and a dense lather when lathered with a cleansing tool such as a nylon towel or a cotton towel, and the moist feeling of the skin after drying with a towel. Dischargeability from the foamer container was not satisfactory.

In order to improve the foam performance (quickness of foaming and density of foam), it is generally known to add more fatty acids such as lauric acid, myristic acid, palmitic acid, and stearic acid. However, when the blending ratio of the fatty acid is increased, there are problems such as poor dischargeability from the foamer container and a decrease in moist feeling on the skin after drying with a towel.

Therefore, the moist feeling on the skin after towel-drying, the lack of stickiness on the skin after towel-drying, the dischargeability from the foamer container, and the speed of foaming and foam density when washing with a body washing towel A liquid skin cleansing composition that is excellent in skin cleansing properties has not yet been provided, and the current situation is that rapid development thereof is strongly desired.

WO2019/097950

The object of the present invention is to solve the above-mentioned problems in the past and to achieve the following objects. That is, the moist feeling on the skin after towel-drying, the lack of stickiness on the skin after towel-drying, the dischargeability from the foamer container, and the speed and density of foaming when washing with a body washing towel. An object of the present invention is to provide a liquid skin cleanser composition which is excellent in

The present inventors have made intensive studies to achieve the above object, and as a result, the liquid skin cleansing composition of the present invention comprises (A) an anionic surfactant, (B) a dimethyldiallylammonium chloride polymer, and containing at least one cationic polymer selected from dimethyldiallylammonium chloride-acrylic acid copolymers and (C) potassium phosphate; The molar ratio of structural units derived from diallylammonium is 40% or more, and the mass ratio [(B)/(C)] of the content of component (B) to the content of component (C) is 0. It is 2 or more and 8.0 or less, and by filling the former container, the moist feeling on the skin after drying with a towel, the lack of stickiness on the skin after drying with a towel, the discharge from the former container, and the body washing It was found to be excellent in foaming speed and foam density when washed with a towel.

The present invention is based on the findings of the present inventors, and means for solving the above problems are as follows.
<1> (A) an anionic surfactant, (B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer, and (C) phosphorus and a potassium salt of an acid, wherein the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 40% or more, and the above relative to the content of the component (C) A liquid skin cleanser composition characterized in that the mass ratio [(B)/(C)] of the content of component (B) is 0.2 or more and 8.0 or less, and is filled in a foamer container. is.
<2> The content of the component (A) is 10% by mass or more and 25% by mass or less with respect to the total amount of the liquid skin cleanser composition, and the content of the component (B) is the liquid skin cleanser composition. 0.2% by mass or more and 0.8% by mass or less based on the total amount of the liquid skin cleanser composition, and the content of the component (C) is 0.1% by mass or more based on the total amount of the liquid skin cleanser composition. The liquid skin cleanser composition according to <1>, wherein the content is 0% by mass or less.
<3> The above <1> to the above <2, wherein the (C) potassium phosphate is at least one selected from potassium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium tripolyphosphate, and potassium polyphosphate. > is a liquid skin cleanser composition according to any one of
<4> The liquid skin cleanser composition according to any one of <1> to <3>, wherein the viscosity at 25°C is 5 mPa·s or more and 30 mPa·s or less.

According to the present invention, the above-mentioned problems in the conventional art can be solved and the above-mentioned objects can be achieved. Also, it is possible to provide a liquid skin cleanser composition which is excellent in foaming speed and foam density when washed with a body washing towel.

(Liquid skin cleanser composition)
The liquid skin cleanser composition of the present invention comprises (A) an anionic surfactant and (B) at least one cation selected from dimethyldiallylammonium chloride polymers and dimethyldiallylammonium chloride-acrylic acid copolymers. and (C) a potassium phosphate salt, and if necessary, further contain other components.
In the present specification, the (A) anionic surfactant is at least one selected from "(A) component", (B) dimethyldiallylammonium chloride polymer, and dimethyldiallylammonium chloride-acrylic acid copolymer. The cationic polymer of is sometimes referred to as "(B) component" or "(B) cationic polymer", and (C) potassium phosphate is sometimes referred to as "(C) component".

<(A) anionic surfactant>
The (A) anionic surfactant is contained in order to improve the speed of foaming and the density of foam when washing with a body washing towel.
In the present specification, "speed of foaming when washing with a body washing towel" means "speed of foaming", and "denseness of foam when washing with a body washing towel" means " It is sometimes referred to as "foam density".

The anionic surfactant of component (A) is not particularly limited and can be appropriately selected depending on the intended purpose. , amino acid-based surfactants, and the like. Among these, higher fatty acid salts are preferred from the viewpoint of improving foaming speed and foam density.
These may be used individually by 1 type, and may use 2 or more types together.

-Higher Fatty Acid Salt-
The higher fatty acid salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include laurate, myristate, palmitate and stearate. Among these, higher fatty acid salts containing all of laurate, myristate, palmitate and stearate are preferred from the viewpoint of improving foaming speed and foam density.
These may be used individually by 1 type, and may use 2 or more types together.

The salt in the higher fatty acid salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include alkali metal salts, amine salts, amino acid salts and the like.
The alkali metal salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include sodium salt and potassium salt.
The amine salt is not particularly limited and can be appropriately selected depending on the intended purpose. and alkanolamine salts such as -amino-2-methylpropanediol.
The amino acid salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include lysine salts and arginine salts.
Among these, alkali metal salts are preferred, and potassium salts are more preferred.

As the higher fatty acid salt, an appropriately synthesized one may be used, or a commercially available product may be used.
The method for synthesizing the higher fatty acid salt is not particularly limited and can be appropriately selected according to the intended purpose. A higher fatty acid salt may be synthesized by a neutralization reaction between a higher fatty acid and an alkali such as potassium hydroxide in a mixing tank in the course of compounding the products.

Commercially available higher fatty acid salts include, for example, trade names of NIKKOL potassium laurate LK-120 (potassium laurate), NIKKOL potassium myristate MK-140 (potassium myristate), Thai Soap MNK-40 (coconut oil fatty acid Potassium) (manufactured by Nikko Chemicals Co., Ltd.), Nonsal PK-1 (potassium palmitate), Nonsal SK-1 (potassium stearate) (manufactured by NOF Corporation) and the like.

- Polyoxyethylene (POE) alkyl ether sulfate -
The polyoxyethylene alkyl ether sulfate is not particularly limited and can be appropriately selected depending on the intended purpose. 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 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 added mole number of ethylene oxide (E.O.), and the average added mole number of the ethylene oxide is preferably 1-5.
In the general formula (A1), X represents an alkali metal or ammonium.
The alkali metal is not particularly limited and can be appropriately selected depending on the intended purpose. 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 (also known as POE (2) sodium laureth sulfate), polyoxyethylene (3) sodium lauryl ether sulfate (also known as POE (3) sodium laureth sulfate), polyoxyethylene (4) sodium lauryl ether sulfate, polyoxyethylene (5) sodium lauryl ether sulfate, polyoxyethylene (3) alkyl (C12 , 13) sodium ether sulfate, polyoxyethylene (2) ammonium lauryl ether sulfate, polyoxyethylene (3) ammonium lauryl ether sulfate, and the like.
In addition, the numerical value in said () represents the average addition mole number (n) of ethylene oxide (E.O.).

As the polyoxyethylene alkyl ether sulfate, an appropriately synthesized one may be used, or a commercially available product may be used.
Commercially available products of the polyoxyethylene alkyl ether sulfate include, for example, Texapon (registered trademark) N70 (polyoxyethylene (2) sodium lauryl ether sulfate) (manufactured by BASF), Shinorin SPE- 1250 (polyoxyethylene (2) sodium lauryl ether sulfate) (manufactured by New Japan Chemical Co., Ltd.) and the like.

- Ether carboxylate -
The ether carboxylate is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include compounds represented by the following general formula (A2) or (A3).
The ether carboxylates may be used singly or in combination of two or more.

In the general formulas (A2) and (A3), R ⁸ is a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a linear or branched alkyl group having 5 to 23 carbon atoms, or It represents a phenyl group substituted with an alkenyl group, and the R ⁸ portion preferably has 10 to 14 carbon atoms.
In general formula (A2), R ⁹ may be the same or different and represents an alkylene group having 2 to 4 carbon atoms, preferably 2 carbon atoms.
In the general formula (A2), o represents an average added mole number of 1 to 20 alkylene oxide, and the average added mole number of the alkylene oxide is preferably 1 to 5.
In general formulas (A2) and (A3), M1 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. etc.
In addition, the numerical value in said () represents the average added mole number (o) of alkylene oxide.

The ether carboxylate may be appropriately synthesized or may be a commercially available product.
Commercially available ether carboxylates include, for example, trade names Enagicol EC-30 (polyoxyethylene (3) sodium lauryl ether acetate) (manufactured by Lion Specialty Chemicals Co., Ltd.), Beaulight LCA-25F ( Polyoxyethylene (3) sodium lauryl ether acetate), Beaulite LCA-30D (polyoxyethylene (3) sodium lauryl ether acetate), Beaulite LCA-H (polyoxyethylene (4) lauryl ether acetic acid), Beaulite LCA -25NH (laureth-4 carboxylic acid), Beaulite SHAA (sodium lauryl glycol carboxylate), Beaulite LCA (polyoxyethylene (3) sodium lauryl ether acetate) (manufactured by Sanyo Chemical Industries, Ltd.), Kao Akipo RLM- 45NV (polyoxyethylene (4.5) sodium lauryl ether acetate), Kaohakipo RLM-100NV (polyoxyethylene (10) sodium lauryl ether acetate) (manufactured by Kao Corporation).
In addition, the numerical value in said () represents the average added mole number (o) of alkylene oxide.

-Amino acid-based surfactant-
The amino acid-based surfactant is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include compounds represented by the following general formula (A4).
The amino acid-based surfactants may be used singly or in combination of two or more.

In the general formula (A4), R ¹⁰ is a straight or branched chain alkyl group or alkenyl group having 5 to 23 carbon atoms, or a straight or branched chain alkyl group or alkenyl group having 5 to 23 carbon atoms. It represents a substituted phenyl group, and the R ¹⁰ portion preferably has 8 to 18 carbon atoms.
In general formula (A4), R ¹¹ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
In 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 general formula (A4), m and n may be the same or different and each represents a number of 0-20.
In 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-based surfactant is not particularly limited and can be appropriately selected depending on the purpose, but glycine, glutamic acid, and methylalanine are preferred.

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

As the amino acid-based surfactant, an appropriately synthesized one may be used, or a commercially available product may be used.
Commercially available amino acid-based surfactants include, for example, trade names of Amylite (registered trademark) GCK-11 (potassium N-coconut oil fatty acid acylglycine) and Amylite (registered trademark) GCK-12K (N-coconut oil Potassium fatty acid acylglycinate), Amylite (registered trademark) GCS-12K (sodium N-coconut acylglycinate), Amylite (registered trademark) GCS-11 (sodium N-coconut acylglycinate), Amisoft (registered trademark) CS -11 (N-myristoyl-L-sodium glutamate), Amisoft (registered trademark) CS-22 (N-coconut fatty acid acyl-L-glutamate sodium), Amisoft (registered trademark) LS-11 (N-lauroyl-L- sodium glutamate), Amisoft® MS-11 (N-myristoyl-L-sodium glutamate), Amisoft® HS-11P (N-stearoyl-L-sodium glutamate), Amisoft® HS-11P (F) (N-stearoyl-L-glutamate sodium), Amisoft (registered trademark) HS21 (N-stearoyl-L-glutamate disodium), Amilite (registered trademark) ACS-12 (cocoyl alanine sodium) (above, Ajinomoto Healthy Supply Co., Ltd.), Amino Surfact (registered trademark) AMMS-P1 (sodium N-myristoyl-L-glutamate) (manufactured by Asahi Kasei Chemicals Corp.), NIKKOL Sarcosinate MN (sodium myristoylmethylaminoacetate), NIKKOL Alaninate LN-30 (Lauroylmethyl-β-alanine sodium) (manufactured by Nikko Chemicals Co., Ltd.), Alanone ACE (coconut fatty acid methylalanine sodium), Alanone AME (myristoylmethyl-β-alanine sodium), Alanone ALE (lauroylmethyl-β- alanine sodium) (manufactured by Kawaken Fine Chemicals Co., Ltd.), Enagicol L-30AN (lauroylmethyl-β-alanine sodium) (manufactured by Lion Specialty Chemicals Co., Ltd.), Softilt AT-L (lauroylmethyl-β-alanine sodium) ) (manufactured by NOF Corporation).

The total content of the component (A) contained in the liquid skin cleanser composition of the present invention is not particularly limited and can be appropriately selected depending on the intended purpose. and from the point of improving the dischargeability from the foamer container, the total amount of the liquid skin cleanser composition is preferably 8% by mass or more and 30% by mass or less, and more preferably 10% by mass or more and 25% by mass or less. preferable.
When the total content of component (A) is 8% by mass or more relative to the total amount of the liquid skin cleanser composition, a liquid skin cleanser composition with excellent foaming speed and foam density can be obtained. can be done.
When the total content of the anionic surfactants as component (A) is 30% by mass or less relative to the total amount of the liquid skin cleanser composition, the liquid skin cleanser composition can be excellently ejected from a foamer container. Obtainable.

<(B) Cationic polymer>
The (B) cationic polymer is at least one selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and can improve the moist feeling of the skin after drying with a towel. can.
The component (B) may be used alone or in combination of two or more.
The dimethyldiallylammonium chloride-acrylic acid copolymer in component (B) is represented by the following general formula (B1).

In the general formula (B1), n and m represent the molar ratio (mol%) of each structural unit.
In the general formula (B1), m is 40 or more, and n and m satisfy the following formula (I).
n+m=100 Formula (I)

In the present invention, the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 40 mol % or more. A liquid skin cleanser that provides excellent moist feeling on the skin after drying with a towel because the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 40 mol% or more. A composition can be obtained.
Further, the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is preferably 65 mol% or more from the viewpoint of improving the moist feeling of the skin after drying with a towel. 95 mol % or more is more preferable.
The dimethyldiallylammonium chloride-acrylic acid copolymer may be used alone or in combination of two or more.

The content of the cationic polymer (B) is not particularly limited and can be appropriately selected according to the intended purpose. 0.1% by mass or more and 1% by mass or less is preferable, and 0.2% by mass or more and 0.8% by mass or less is more preferable with respect to the total amount.
When the content of the component (B) is 0.1% by mass or more relative to the total amount of the liquid skin cleanser composition, it is possible to obtain a liquid skin cleanser composition that provides excellent moist feeling on the skin after drying with a towel. can be done. When the content of the component (B) is 1% by mass or less relative to the total amount of the liquid skin cleanser composition, it is possible to obtain a liquid skin cleanser composition that provides excellent moist feeling on the skin after drying with a towel. .

The molar ratio of each structural unit in the dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) can be determined by nuclear magnetic resonance (NMR) measurement under the following measurement conditions.
[Measurement condition]
Solvent: heavy water ₍ D2O)
Measuring instrument: JNM-LA300 (300 MHz, manufactured by JEOL Ltd.)

The weight-average molecular weight of the cationic polymer (B) is not particularly limited and can be appropriately selected depending on the intended purpose. ,000, more preferably 15,000 to 450,000.
The weight average molecular weight of the cationic polymer (B) is measured by, for example, the SEC-MALLS-RI system (measurement conditions: column: TSKgelα series α-M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3M aqueous solution). can do.

The viscosity of the (B) cationic polymer solution with a solid content of 30% by mass to 44% by mass at 25° C. is preferably 10 mPa·s to 15,000 mPa·s, more preferably 20 mPa·s to 12,000 mPa·s. .
The viscosity can be measured, for example, using a Brookfield viscometer LVF (manufactured by Brookfield).

The (B) cationic polymer may be appropriately synthesized or may be a commercially available product.
Commercially available cationic polymers (B) include, for example, MERQUAT 100, MERQUAT 106, MERQUAT 280, and MERQUAT 295 (all manufactured by Lubrizol).
The composition, physical properties, etc. of each commercial product are shown below.
-Marquardt 100-
・ Composition (molar ratio) acrylic acid: dimethyldiallylammonium chloride = 0:100
・ Solid content 39% by mass to 44% by 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. with spindle No. 3 rotors can be used and measurements can be made under the conditions of 6 revolutions/minute.
-Marquardt 106-
・ Composition (molar ratio) acrylic acid: dimethyldiallylammonium chloride = 0:100
・Solid content 30% by mass to 36% by mass
・Viscosity at 25°C: 20 mPa・s to 65 mPa・s
・Weight average molecular weight 15,000
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 3 rotors can be used and measured at 60 revolutions/minute.
-Marquardt 280-
・ Composition (molar ratio) acrylic acid: dimethyldiallylammonium chloride = 35:65
・ Solid content 39% by mass to 43% by mass
・Viscosity at 25°C 3,000 mPa・s to 6,000 mPa・s
・Weight average molecular weight 450,000
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measured at 30 revolutions/minute.
-Marquardt 295-
・Composition (molar ratio) acrylic acid: dimethyldiallylammonium chloride = 5:95
・ Solid content 35% by mass to 40% by mass
・Viscosity at 25°C 3,500 mPa・s to 9,000 mPa・s
・Weight average molecular weight 150,000
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measured at 30 revolutions/minute.

<(C) potassium phosphate>
The potassium phosphate of component (C) is contained to improve the speed of foaming.

The component (C) is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include potassium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium tripolyphosphate, and potassium polyphosphate. Among these, potassium dihydrogen phosphate is preferable from the viewpoint of improving the speed of foaming.
The component (C) may be used alone or in combination of two or more.

The content of the component (C) is 0.05 mass based on the total amount of the liquid skin cleanser composition, from the viewpoint of improving the speed of foaming and the moist feeling of the skin after drying with a towel. % or more and 2.0 mass % or less is preferable, and 0.1 mass % or more and 1.0 mass % or less is more preferable.
When the content of component (C) is 0.05% by mass or more relative to the total amount of the liquid skin cleanser composition, it is possible to obtain a liquid skin cleanser composition that foams quickly. When the content of component (C) is 2.0% by mass or less relative to the total amount of the liquid skin cleanser composition, it is possible to obtain a liquid skin cleanser composition that provides good moist feeling on the skin after drying with a towel. can be done.

As said (C)component, what was synthesize|combined suitably may be used and a commercial item may be used.
The method for synthesizing the component (C) is not particularly limited and can be appropriately selected according to the intended purpose.
Commercially available products of component (C) include, for example, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium tripolyphosphate, and potassium polyphosphate (manufactured by Taiheiyo Kagaku Sangyo Co., Ltd.).
These may be used individually by 1 type, and may use 2 or more types together.

<Mass ratio [(B)/(C)]>
In the present invention, the mass ratio [(B)/(C)] of the content of the component (B) to the content of the component (C) is 0.2 or more and 8.0 or less.
When the mass ratio [(B)/(C)] is 0.2 or more, it is possible to obtain a liquid skin cleanser composition that provides excellent moist feeling on towel-dried skin.
When the mass ratio [(B)/(C)] is 8.0 or less, it is possible to obtain a liquid skin cleanser composition which is excellent in non-stickiness on towel-dried skin and in rapid foaming. can.
In addition, the mass ratio [(B)/(C)] of the content of component (B) to the content of component (C) is the moist feeling on the skin after towel-drying and the stickiness on the skin after towel-drying. It is preferably 0.4 or more and 4.0 or less, more preferably 0.4 or more and 1.4 or less, from the viewpoint of improving the smoothness and speed of foaming.

<Other ingredients>
In addition to the components (A), (B), and (C), the liquid skin cleanser composition of the present invention may optionally contain other ingredients as long as the effects of the present invention are not impaired. can be blended.
Examples of the other components include surfactants other than component (A), water-soluble polymers other than component (B), oils, silicones, alcohols such as lower or higher alcohols, lanolin derivatives, protein derivatives, Medicines such as amino acids and vitamins, disinfectants, moisturizers, preservatives, pH adjusters such as potassium hydroxide, citric acid and hydrochloric acid, antioxidants, sequestering agents, ultraviolet absorbers, ultraviolet scattering agents, animal and plant extracts substances or derivatives thereof, chelating agents such as edetic acid, dyes, perfumes, pigments, inorganic powders, clay minerals, nylon, water-insoluble polymer compound powders such as polyethylene, and the like.
These may be used individually by 1 type, and may use 2 or more types together.
As for the other components, those synthesized appropriately may be used, or commercially available products may be used.
The content of the other components in the liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the purpose.

The oil is not particularly limited and can be appropriately selected depending on the intended purpose. vegetable oils and fats and their ester compounds, mink oil, egg yolk oil and other animal oils and fats, beeswax, whale wax, lanolin, hydrogenated lanolin, carnauba wax, candelilla wax and other waxes, liquid paraffin, squalane, microcrystalline wax , ceresin wax, paraffin wax, petrolatum and other hydrocarbons, oleic acid, isostearic acid, behenic acid and other natural and synthetic fatty acids, glycerol tri-2-ethylhexanoate, 2-ethylhexyl stearate, butyl stearate, Isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyldodecyl oleate, esters such as cholesterol oleate, and the like.
The content of the oil is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.1% by mass or more and 3% by mass or less.

The alcohols are not particularly limited and can be appropriately selected depending on the purpose. Examples include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, and lauryl alcohol. .
The content of the alcohol is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.1% by mass or more and 10% by mass or less.

The moisturizing agent is not particularly limited and can be appropriately selected depending on the intended purpose. , diglycerin, triglycerin, and polyglycerin.

The preservative is not particularly limited and can be appropriately selected depending on the intended purpose. Hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide, benzalkonium chloride, hinokitiol, resorcinol, methylchloroisothiazolinone/methylisothiazolinone liquid (trade name: Kason CG, Rohm and Haas Japan Co., Ltd.) ), salicylic acid, pentanediol, phenoxyethanol, ethanol, and the like.
The content of the preservative is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.1% by mass or more and 1% by mass or less.

The antioxidant is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include dibutylhydroxytoluene, butylhydroxyanisole, and ascorbic acid.
The content of the antioxidant is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.1% by mass or more and 1% by mass or less.

The chelating agent is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include disodium edetate, ethylenediaminetetraacetate, hexametaphosphate and gluconic acid.
The content of the chelating agent is not particularly limited and can be appropriately selected according to the purpose, but is preferably 0.1% by mass or more and 1% by mass or less.

The pH adjuster is not particularly limited and can be appropriately selected depending on the purpose. Examples include sodium hydroxide, potassium hydroxide, citric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanolamine, phosphoric acid, Glycolic acid and the like can be mentioned.

The ultraviolet absorber and the ultraviolet scattering agent are not particularly limited and can be appropriately selected depending on the intended purpose. kaolin, talc and the like.

The vitamins are not particularly limited and can be appropriately selected depending on the purpose. Examples include vitamin A, vitamin B group, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, carnitine , ferulic acid, γ-oryzanol, α-lipoic acid, orotic acid and derivatives thereof.
The content of the vitamins is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.001% by mass or more and 0.5% by mass or less.

The amino acids are not particularly limited and can be appropriately selected depending on the intended purpose. , arginine, histidine, lysine and derivatives thereof.
The content of the amino acids is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.001% by mass or more and 0.5% by mass or less.

<pH>
The pH of the liquid skin cleanser composition at 25° C. is preferably from 9.5 to 11.0, more preferably from 9.8 to 10.6.
The method for measuring the pH is not particularly limited, but examples thereof include a method of measuring using a glass electrode color hydrogen ion concentration indicator HM-30R (electrode type GST-5721 manufactured by Toa DKK Co., Ltd.). .

<Viscosity>
The viscosity of the liquid skin cleanser composition at 25°C is not particularly limited and may be appropriately selected according to the intended purpose. · s or more and 30 mPa·s or less is preferable, and 15 mPa·s or more and 25 mPa·s or less is more preferable.
The method for measuring the viscosity is not particularly limited. and a method of measuring the viscosity after 1 minute with one rotor.

<former container>
The liquid skin cleanser composition of the present invention is of a type that is filled in a foamer container and discharged from the foamer container in the form of foam.
The foamer container is not particularly limited as long as it can discharge the liquid skin cleanser composition in the form of foam, and can be appropriately selected according to the purpose. and a pressure-resistant container. Among these, a non-gas type bubble dispenser is preferable.

―Non-gas type bubble dispenser―
The non-gas type foam dispenser is not particularly limited as long as it can mix the liquid skin cleanser composition with air and discharge it in a foamed state. Examples include a squeeze foamer container in which foam can be discharged by squeezing the portion by hand, and a pump foamer container in which foam can be discharged by pushing down the nozzle portion.
As the squeeze foamer container and the pump foamer container, for example, a foamer container manufactured by Yamato Seikan Co., Ltd., a foamer container manufactured by Yoshino Kogyosho Co., Ltd., and the like can be used. More specifically, the former containers and the like described in JP-A-7-315463, JP-A-8-230961, and JP-A-2005-193972 can be used.

The non-gas type foam dispenser usually has a porous membrane for forming foam, and foam is formed by passing the liquid skin cleanser composition through the porous membrane. be.
The material of the porous membrane is not particularly limited and can be appropriately selected according to the purpose, but plastic materials such as nylon, polyester, polyolefin, etc. are preferable.

The mesh of the porous membrane is not particularly limited and can be appropriately selected according to the purpose. More preferred are:
The number of the porous membranes is not particularly limited and can be appropriately selected depending on the intended purpose. More specifically, the former containers described in JP-A-7-315463, JP-A-8-230961, and JP-A-2005-193972 can be preferably used.
For example, when using the liquid skin cleanser composition using the pump foamer container having one 305-mesh porous membrane and one 200-mesh porous membrane, the room temperature condition is 25°C. The viscosity of the liquid skin cleansing composition below is preferably 30 mPa·s or less, more preferably 25 mPa·s or less.

<Manufacturing method>
The method for producing the liquid skin cleanser composition of the present invention is not particularly limited and can be appropriately selected according to the purpose. Depending on the method, the other components and purified water (blended as the remaining amount so that the entire liquid skin cleansing composition is 100% by mass) can be mixed.
Specifically, it can be manufactured as follows. After dissolving the (A) component and the (C) component in purified water heated to 70° C. to 80° C., cooling to 40° C. or less, adding the (B) component and other components. It can be manufactured by

The liquid skin cleanser composition may be prepared using an apparatus. The device is not particularly limited and can be appropriately selected depending on the intended purpose.
The stirring blade is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include propellers, turbines, and dispersers.

<Application>
The application site and application method of the liquid skin cleanser composition are not particularly limited and can be appropriately selected according to the intended purpose. can.
The use of the liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the intended purpose. etc.

EXAMPLES The present invention will be described in more detail below based on Examples and Comparative Examples, but the present invention is not limited to these Examples.
In addition, the content of each component described in Examples and Comparative Examples is shown in "% by mass", and all are values converted to pure content.

(Examples 1 to 25 and Comparative Examples 1 to 7)
Liquid skin cleansing compositions having compositions and contents shown in Tables 1 to 6 below were prepared by the following method.
Purified water in an amount of 95% by mass of the total amount of the liquid skin cleanser composition finally obtained is heated to 70° C. to 80° C., and the anionic surfactant of component (A) and component (C) are A potassium phosphate salt or a comparative component of component (C) was dissolved. Then, after cooling to 40° C. or less, the cationic polymer of component (B) or the comparative component of component (B) and other components were added to prepare a liquid skin cleanser composition. After that, if the pH is less than the predetermined pH, potassium hydroxide, which is a common component, is added to adjust the predetermined pH to 10.0, and then purified water is added so that the total amount becomes 100% by mass. Liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 were obtained. The mixture was stirred using a three-one motor (HEIDON BL1200, manufactured by Shinto Kagaku Co., Ltd.), and a propeller was used as the stirring blade.
The pH of the obtained liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 was measured at 25° C. using a pH meter (HM-30R; manufactured by TOA DKK).
The resulting liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 were filled into a container with a foamer pump dispenser (discharge volume 3 mL, manufactured by Yoshino Kogyosho Co., Ltd.).

The obtained liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 were evaluated for "speed of foaming", "denseness of foam", "moist feeling on skin after drying with a towel", " The non-stickiness of the skin after drying” and the “ejectability from the foamer container” were evaluated and judged. The results are shown in Tables 1 to 6 below.

<Evaluation of foaming speed>
10 professional evaluators applied the liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 in a foamer container to a nylon towel (Awastar Body Towel Soft, manufactured by Kikuron Co., Ltd.) 2 times ( About 6 g) was taken, and the speed of foaming was observed while the whole body was being washed, and evaluated based on the following evaluation criteria. The evaluation average value of 10 professional evaluators was obtained and judged based on the following judgment criteria.
[Evaluation criteria for foaming speed]
4 points: Very foamy 3 points: Foamy 2 points: Slightly foamy 1 point: Almost no foaming [Criteria for good foam retention]
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<Evaluation of foam density>
10 professional evaluators applied the liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 in a foamer container to a nylon towel (Awastar Body Towel Soft, manufactured by Kikuron Co., Ltd.) 2 times ( About 6 g) was taken, and after washing the whole body, the foam was picked up and pressed with both hands to observe the rebound feeling and the difficulty of dripping when the hands were turned upside down, and evaluated based on the following evaluation criteria. The evaluation average value of 10 professional evaluators was obtained and judged based on the following judgment criteria.
[Evaluation Criteria for Foam Density]
4 points: The foam is hard and does not drip even when the hand is turned upside down. 3 points: The foam is slightly hard and does not drip even when the hand is turned upside down. The foam is soft and drips when you turn your hand upside down.[Criteria for foam density]
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<Evaluation of moist feeling on skin after towel drying>
10 professional evaluators applied the liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 in a foamer container to a nylon towel (Awastar Body Towel Soft, manufactured by Kikuron Co., Ltd.) 2 times ( Approximately 6 g) was taken and the whole body was washed. After that, the skin was rinsed with warm water at 40°C, dried with a towel, and left at rest in a constant temperature room at 38°C for 30 minutes. The evaluation average value of 10 professional evaluators was obtained and judged based on the following judgment criteria.
[Evaluation criteria for moist feeling on skin after towel drying]
4 points: Very moist feeling 3 points: Moist feeling is felt 2 points: Moist feeling is felt slightly 1 point: Moist feeling is not felt so much
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<Evaluation of non-stickiness on skin after towel drying>
10 professional evaluators applied the liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 in a foamer container to a nylon towel (Awastar Body Towel Soft, manufactured by Kikuron Co., Ltd.) 2 times ( Approximately 6 g) was taken and the whole body was washed. After that, the skin was rinsed with warm water of 40°C, dried with a towel, and left to rest in a constant temperature room of 38°C for 30 minutes. The evaluation average value of 10 professional evaluators was obtained and judged based on the following judgment criteria.
[Evaluation criteria for non-stickiness of skin after towel drying]
4 points: Not sticky 3 points: Slightly sticky 2 points: Sticky 1 point: Strong stickiness
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<Evaluation of dischargeability from former container>
The liquid skin cleanser compositions of Examples 1 to 25 and Comparative Examples 1 to 7 were filled into a container with a foamer pump dispenser (discharge volume 3 mL, manufactured by Yoshino Kogyosho Co., Ltd.), and 10 professional evaluators measured the temperature at 25°C. , the easiness of ejection and the texture of the ejected foam were evaluated. The evaluation average value of 10 professional evaluators was obtained and judged based on the following judgment criteria.
[Evaluation Criteria for Ejectability from Foamer Container]
4 points: The pump is easy to push, and fine bubbles are discharged. 3 points: The pump is easy to push, but large particles of bubbles are mixed. 2 points: The pump is a little difficult to push, and many large particles are mixed. : It is very difficult to push the pump, and only large particles of foam are discharged.
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

(Prescription examples 1 to 6)
A liquid skin cleanser composition having the composition and content shown in Table 7 below was prepared in the same manner as in Example 1.

Details of each component used in Examples 1 to 25, Comparative Examples 1 to 7, and Formulation Examples 1 to 6 are shown in Table 8 below.

*1: Potassium laurate was prepared by neutralizing lauric acid (NAA-122, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
*2: Potassium myristate was prepared by neutralizing myristic acid (NAA-142, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
*3: Potassium palmitate was prepared by neutralizing palmitic acid (NAA-160, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by Asahi Glass Co., Ltd.).
*4: Potassium stearate was prepared by neutralizing stearic acid (NAA-180, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by Asahi Glass Co., Ltd.).
* 5: Perfume is the perfume A to D described in paragraphs [0065] to [0071] of JP-A-2002-128658, and paragraphs [0076] to [0088] of JP-A-2003-73249. A to E, or blended perfume compositions 1 to 4 described in paragraphs [0016] to [0023] of JP-A-2020-132680.

The liquid skin cleanser composition of the present invention provides a moist feeling on the skin after towel-drying, no stickiness on the skin after towel-drying, dischargeability from the foamer container, and cleansing with a body-cleansing towel. Due to its excellent foaming speed and foam density, it can be suitably used for, for example, body shampoo, body soap, facial cleansing foam, hand soap, foaming hand soap cleansing foam, makeup remover, and the like.

Claims

(A) an anionic surfactant;
(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymers and dimethyldiallylammonium chloride-acrylic acid copolymers;
(C) a potassium phosphate salt, and
The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 40% or more,
The mass ratio [(B)/(C)] of the content of the component (B) to the content of the component (C) is 0.2 or more and 8.0 or less,
A liquid skin cleanser composition which is filled in a foamer container.
The content of the component (A) is 10% by mass or more and 25% by mass or less with respect to the total amount of the liquid skin cleanser composition,
The content of the component (B) is 0.2% by mass or more and 0.8% by mass or less with respect to the total amount of the liquid skin cleanser composition,
The liquid skin cleanser composition according to claim 1, wherein the content of component (C) is 0.1% by mass or more and 1.0% by mass or less relative to the total amount of the liquid skin cleanser composition.
The (C) potassium phosphate salt is at least one selected from potassium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium tripolyphosphate, and potassium polyphosphate, according to any one of claims 1 to 2. A liquid skin cleanser composition.
The liquid skin cleanser composition according to any one of claims 1 to 3, which has a viscosity at 25°C of 5 mPa·s or more and 30 mPa·s or less.