JP2020172476A - Liquid skin cleanser composition - Google Patents

Abstract

To provide a liquid skin cleanser composition which is excellent in large foam volume, foam elasticity, smoothness and moist feeling of the skin after dried with a towel, lack of tense feeling and lack of stickiness of the skin after dried with a towel.SOLUTION: There is provided a liquid skin cleanser composition filled in a foamer container which comprises (A) an anionic surfactant, (B) a specific cationic polymer, (C1) a polyoxyethylene alkyl ether-based nonionic surfactant having an average addition mol number of ethylene oxide of 5 to 20 mol and an alkyl chain length of 19 to 24 carbon atoms and (C2) a polyoxyethylene alkyl ether-based nonionic surfactant having an average addition mol number of ethylene oxide of 7 to 20 mol and an alkyl chain length of 14 to 18 carbon atoms, where the mass ratio [(C1)/(C2)] is 0.15 to 4.SELECTED DRAWING: None

Description

The present invention relates to a liquid skin cleansing composition.

Conventionally, liquid skin cleansing compositions such as hand soap and body soap have a large amount of foam, good foam performance such as foam elasticity, good rinsing feel, and towel drying. In addition to having a good finish feel such as smoothness and non-stickiness of the skin afterwards, it is strongly desired that the skin feels less taut and moisturized no matter how many times it is washed. Further, in recent years, a liquid skin cleansing composition filled in a former container that can be discharged with foam has been used.

So far, a liquid skin cleansing composition containing a fatty acid salt and a nonionic surfactant has been proposed (see Patent Document 1). However, the proposed liquid skin cleansing composition does not have a long-lasting moisturizing sensation, and the finished feel such as the smoothness of the skin after towel drying is also insufficient.

Further, a handwash composition containing a fatty acid salt and an amphoteric surfactant has also been proposed (see Patent Document 2). However, the proposed hand-cleaning composition does not provide a long-lasting moisturizing feeling and a finished feel such as smoothness of the skin after towel drying, and the foaming performance such as foam elasticity is insufficient. there were. Further, since it contains an alkyl acrylate copolymer emulsion, it has a high viscosity and cannot be used in a former container.

Further, a higher fatty acid salt containing laurate, myristate, and palmitate, a cationic polymer, and an alkyl group have 12 to 16 carbon atoms, and the average number of moles of ethylene oxide added is 19 to 50. A liquid skin cleaning agent composition containing polyoxyethylene alkyl ether or the like is also proposed (see Patent Document 3). However, the proposed liquid skin cleansing composition did not have a long-lasting moisturizing sensation.

Therefore, a liquid skin cleansing composition that is excellent in the amount of foam, the elasticity of foam, the smoothness of the skin after towel drying, the persistence of moisturizing feeling, the lack of tension, and the non-stickiness of the skin after towel drying. The product has not been provided yet, and the prompt development of the product is strongly desired.

JP-A-2007-169248 Japanese Unexamined Patent Publication No. 2006-182698 International Publication No. 2008/100876

An object of the present invention is to solve the above-mentioned problems in the past and to achieve the following object. That is, the present invention is excellent in the amount of foam, the elasticity of foam, the smoothness of the skin after towel drying, the persistence of moisturizing feeling, the lack of tension, and the non-stickiness of the skin after towel drying. It is an object of the present invention to provide a liquid skin cleansing composition.

As a result of diligent studies to achieve the above object, the present inventors have (A) an anionic surfactant, (B) a dimethyldiallyl ammonium chloride polymer, and a dimethyldiallyl ammonium chloride-acrylic acid copolymer. At least one cationic polymer selected from, and a polyoxyethylene alkyl ether type nonionic having an (C1) alkyl chain length of 19 to 24 and an average addition molar number of ethylene oxide of 5 to 20 mol. A sex surfactant and a polyoxyethylene alkyl ether type nonionic surfactant having a (C2) alkyl chain length of 14 to 18 and an average addition molar number of ethylene oxide of 7 to 20 mol. The mass ratio [(C1) / (C2)] of the content of the component (C1) to the content of the component (C2) is 0.15 to 4, and the chloride of the component (B). A liquid skin detergent composition in which the molar ratio of the structural unit derived from the dimethyldiallyl ammonium chloride in the dimethyldiallylammonium-acrylic acid copolymer is 65 mol% or more and is filled in a former container is a component of each of these components. Due to the synergistic effect of, the amount of foam, the elasticity of foam, the smoothness of the skin after towel drying, the long-lasting moisturizing feeling, the lack of tension, and the non-stickiness of the skin after towel drying are excellent. Was found.

The present invention is based on the above-mentioned findings by the present inventors, and the means for solving the above-mentioned problems are as follows. That is,
<1> (A) Anionic surfactant and
(B) At least one cationic polymer selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and
(C1) A polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 19 to 24 and an average addition mole number of ethylene oxide of 5 to 20 mol.
(C2) Contains a polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 14 to 18 and an average addition mole number of ethylene oxide of 7 to 20 mol.
The mass ratio [(C1) / (C2)] of the content of the component (C1) to the content of the component (C2) is 0.15-4.
The molar ratio of the structural unit derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more.
A liquid skin cleansing composition characterized by being filled in a former container.
<2> (D) The liquid skin cleansing composition according to <1>, which further contains an amphoteric surfactant.
<3> The liquid skin cleansing composition according to any one of <1> to <2>, which has a viscosity at 25 ° C. of 5 mPa · s to 25 mPa · s.
<4> The content of the component (A) is 5% by mass to 10% by mass, the content of the component (B) is 0.05% by mass to 0.5% by mass, and the content of the component (C1). The liquid skin cleaning agent according to any one of <1> to <3> above, wherein is 0.05% by mass to 1% by mass and the content of the component (C2) is 0.2% by mass to 1% by mass. It is a composition.
<5> The liquid skin cleansing composition according to any one of <2> to <4>, wherein the content of the component (D) is 3% by mass to 10% by mass.

According to the present invention, the above-mentioned problems in the past can be solved and the above-mentioned object can be achieved, and the amount of foam, the elasticity of foam, the smoothness of the skin after towel drying, and the persistence of moisturizing feeling, It is possible to provide a liquid skin cleansing composition which is excellent in non-tightness and non-stickiness of the skin after towel drying.

(Liquid skin cleansing composition)
The liquid skin cleansing composition of the present invention is at least one selected from (A) anionic surfactant, (B) dimethyldiallylammonium chloride polymer, and dimethyldialylammonium chloride-acrylic acid copolymer. A cationic polymer, a polyoxyethylene alkyl ether type nonionic surfactant having an (C1) alkyl chain length of 19 to 24, and an average addition molar number of ethylene oxide of 5 to 20 mol, and (C2). ) A polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 14 to 18 and an average addition molar number of ethylene oxide of 7 to 20 mol, and (D) an amphoteric surfactant. It is preferable to further contain an activator, and if necessary, further contain other components.

<(A) Anionic surfactant>
The anionic surfactant of the component (A) is contained in order to improve the amount of foam and the elasticity of foam.

The anionic surfactant of the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose. However, from the viewpoint of the large amount of foam and the elasticity of the foam, the higher fatty acid salt, Polyoxyethylene (POE) alkyl ether sulfates, ether carboxylic acid salts, amino acid-type surfactants, olefin sulfonates and the like are preferable. These may be used alone or in combination of two or more.

-Higher fatty acid salt-
The higher fatty acid salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include laurate salt, myristic acid salt, palmitic acid salt and stearate salt. These may be used alone or in combination of two or more.

The counter ion of the higher amino acid is not particularly limited and may be appropriately selected depending on the intended purpose. For example, alkali metal ions such as sodium ion and potassium ion; ammonium ion; monoethanolamine, diethanolamine and triethanolamine. Alkanolamines and the like; basic amino acids such as lysine and arginine can be mentioned. Among these, alkali metal ions are preferable and potassium ions are more preferable as the counter ions from the viewpoint of the large amount of bubbles and the elasticity of the bubbles.

As the higher fatty acid salt, those synthesized as appropriate may be used, or commercially available products may be used.
Commercially available products of the higher fatty acid salt include, for example, NAA (registered trademark) -122 (lauric acid), NAA (registered trademark) -142 (myristic acid), NAA (registered trademark) -160 (palmitic acid), NAA ( Lauric acid is neutralized with salts such as potassium hydroxide, triethanolamine, and monoethanolamine using commercially available higher fatty acids such as registered trademark) -180 (stearic acid) (manufactured by Nichiyu Co., Ltd.). Examples thereof include acid salts, myristates, palmitates, stearate and the like.

-Polyoxyethylene (POE) alkyl ether sulfate-
The average number of moles of ethylene oxide (EO) added to the POE alkyl ether sulfate is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 1 to 5.
The alkyl chain length of the POE alkyl ether sulfate is not particularly limited and may be appropriately selected depending on the intended purpose, but 10 to 14 is preferable.

Specific examples of the POE alkyl ether sulfate include polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (2) sodium lauryl ether sulfate (also known as POE (2) sodium laureth sulfate), and 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 can be mentioned.

As the POE alkyl ether sulfate, one synthesized appropriately may be used, or a commercially available product may be used.
Commercially available products of the POE alkyl ether sulfate include, for example, Emar 20C (polyoxyethylene (3) sodium lauryl ether sulfate), Emar 270J (polyoxyethylene (2) sodium lauryl ether sulfate), and Emar 20CM (polyoxyethylene). (3) Alkyl (C12,13) sodium ether sulfate), Emar 125HP (polyoxyethylene (1) sodium lauryl ether sulfate) (all manufactured by Kao Co., Ltd.), Alscope (registered trademark) DA-330S (polyoxyethylene) (3) Alkyl (C12,13) sodium ether sulfate), Alscope (registered trademark) A-225B (polyoxyethylene (2) ammonium lauryl ether sulfate) (above, Toho Chemical Industry Co., Ltd.), Sinoline SPE-1150 (poly) Oxyethylene (1) sodium lauryl ether sulfate), Sinoline SPE-1250 (polyoxyethylene (2) sodium lauryl ether sulfate), Sinoline SPE-1350 (polyoxyethylene (3) sodium lauryl ether sulfate) (above, Shin Nihon Rika Co., Ltd.).

-Ether carboxylate-
The ether carboxylate is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include compounds represented by the following general formulas (A1) and (A2). The ether carboxylate may be used alone or in combination of two or more.

In the general formulas (A1) and (A2), R ² is a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms. a substituted phenyl group with a group, the carbon number of the R ² moiety, 10 to 14 is preferred.

In the general formula (A1), R ³ may be the same or different, and exhibits an alkylene group having 2 to 4 carbon atoms, preferably 2 carbon atoms.

In the general formula (A1), o indicates the average number of moles of alkylene oxide added from 1 to 20, and the average number of moles of alkylene oxide added is preferably 1 to 5.

In the general formulas (A1) and (A2), M ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, an alkanolamine, an ammonium or a basic amino acid.

Specific examples of the compound represented by the general formula (A1) or (A2) include polyoxyethylene (3) sodium lauryl ether acetate (average addition molar number of EO is 3 mol), polyoxyethylene (4) lauryl. Examples thereof include ether potassium acetate (average number of added moles of EO is 4 mol), sodium lauryl glycol acetate and the like.

As the ether carboxylate, an appropriately synthesized one may be used, or a commercially available product may be used.
Examples of commercially available products of the ether carboxylate include Energycol EC-30 (polyoxyethylene (3) sodium lauryl ether acetate, manufactured by Lion Specialty Chemicals Co., Ltd.) and Beaulite LCA-25F (polyoxyethylene (3). ) Lauryl Ether Sodium Acetate), Beaulite LCA (Polyoxyethylene (3) Sodium Lauryl Ether Acetate), Beaulite LCA-30D (Polyoxyethylene (3) Sodium Lauryl Ether Acetate), Beaulite LCA-H (Polyoxyethylene) (4) Sodium lauryl ether acetate), Beaulite LCA-25NH (Polyoxyethylene (3) Sodium lauryl ether acetate), Beaulite SHAA (Sodium lauryl glycol carboxylate) (all manufactured by Sanyo Kasei Kogyo Co., Ltd.), Kao Akipo RLM Examples thereof include −45 NV (polyoxyethylene (4.5) sodium lauryl ether acetate) and Kao Akipo RLM-100 NV (polyoxyethylene (10) sodium lauryl ether acetate) (all manufactured by Kao Co., Ltd.).

-Amino acid type surfactant-
The amino acid-type surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include compounds represented by the following general formula (A3). The amino acid type surfactant may be used alone or in combination of two or more.

In the general formula (A3), R ² is substituted with a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms. showed phenyl group, number of carbon atoms of the ^{R 2} moiety is 8-18 are preferred.

In formula (A3), ^{R 4} represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

In the general formula (A3), R ⁵ and R ⁶ may be the same or different, and represent a hydrogen atom or-(CH ₂ ) _m- COMM ² .

In the general formula (A3), m and n may be the same or different, and represent numbers 0 to 20.

In the general formula (A3), M ¹ and M ² may be the same or different, and represent a hydrogen atom, an alkali metal, an alkaline earth metal, an alkanolamine, an ammonium or a basic amino acid.

The amino acid structure of the hydrophilic portion of the amino acid-type surfactant is not particularly limited and may be appropriately selected depending on the intended purpose, but glycine, glutamic acid and methylalanine are preferable.

Specific examples of the amino acid type surfactant represented by the general formula (A3) include N-cocoyl-glycine potassium (N-cocoyl oil fatty acid acylglycine potassium) and N-cocoyl-glycine sodium (N-cocoyl oil fatty acid). N-acyl-glycine and salts thereof such as (sodium acylglycine); N-acyl-N-carboxyethyl-glycine and salts thereof such as N-myristoyl-N-carboxyethyl-glycine sodium; sodium N-myristoyl-L-glutamate. , N-Lauroyl-L-sodium glutamate, N-myristoyl-L-potassium glutamate, N-palm oil fatty acid acyl-L-potassium glutamate, N-palm oil fatty acid acyl-L-sodium glutamate, N-palm fatty acid acyl-L N-acylglutamic acid such as sodium-glutamate, sodium N-stearoyl-L-glutamate and salts thereof; N-lauroyl-N-methyl-β-alanine potassium, lauroylmethyl-β-alanine sodium, N-lauroyl-N-methyl N-acyl-N-methyl-β-alanine and salts thereof such as -β-alanine triethanolamine, coconut oil fatty acid methylalanine sodium, N-palm oil fatty acid acyl-DL-alanine triethanolamine; N-cocoyl-β N-acyl-β-alanine such as −alanine triethanolamine and salts thereof; acylsarcosine such as coconut oil fatty acid sarcosine triethanolamine and sodium myristylmethylaminoacetate and salts thereof and the like can be mentioned.

As the amino acid type surfactant, one synthesized appropriately may be used, or a commercially available product may be used.
Examples of commercially available products of the amino acid type surfactant include Amylite (registered trademark) GCK-11 (N-palm oil fatty acid acylglycine potassium) and Amylite (registered trademark) GCK-12K (N-coconut oil fatty acid acylglycine potassium). ), Amylite® GCS-12K (N-coconut oil fatty acid acylglycine sodium), Amylite® GCS-11 (N-coconut oil fatty acid acylglycine sodium), Amisoft® CS-11 (N) -Palm oil fatty acid acyl-L-sodium glutamate), Amisoft® CS-22 (N-palm oil fatty acid acyl-L-potassium glutamate), Amisoft® LS-11 (N-lauroyl-L-glutamic acid) Sodium), Amisoft® MS-11 (N-myristoyl-L-sodium glutamate), Amisoft® HS-11P (N-stearoyl-L-sodium glutamate), Amisoft® HS-11P (registered trademark) F) (N-stearoyl-L-sodium glutamate), Amisoft® HS21 (disodium N-stearoyl-L-glutamate), Amylite® ACS-12 (N-palm oil fatty acid acyl-L-alanine) Sodium) (above, manufactured by Ajinomoto Co., Ltd.), Amino Surfact (registered trademark) AMMS-P1 (N-myristoyl-L-sodium glutamate) (manufactured by Asahi Kasei Chemicals Co., Ltd.), NIKKOL sarcosinate MN (sodium myristylmethylaminoacetate), NIKKOL Alaninate LN-30 (Lauroylmethyl-β-alanine sodium) (manufactured by Nikko Chemicals Co., Ltd.), Alanon ACE (palm oil fatty acid methylalanine sodium), Alanon AME (myristylmethyl-β-alanine sodium), Alanon ALE ( Lauroylmethyl-β-alanine fatty acid) (manufactured by Kawaken Fine Chemicals Co., Ltd.), Energycol L-30AN (lauroylmethyl-β-alanine fatty acid) (manufactured by Lion Specialty Chemicals Co., Ltd.), Softilt AT-L (N- Lauroyl-N-methyl-β-alanine triethanolamine) (manufactured by Nichiyu Co., Ltd.) and the like.

Among these, as the anionic surfactant of the component (A), the higher fatty acid salt is preferable from the viewpoint of the large amount of bubbles and the elasticity of the bubbles, and it is selected from laurate and myristic acid salts. Higher fatty acid salts containing at least one of these are more preferred.

The method for blending the anionic surfactant of the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose, and may be blended as the anionic surfactant, and the higher fatty acid may be blended. And the salt capable of forming the counterion, such as potassium hydroxide, triethanolamine, and monoethanolamine, may be separately added to the compounding tank and subjected to a neutralization reaction to obtain an anionic surfactant.

The content of the anionic surfactant of the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose, but the amount of foam, the elasticity of the foam, and the duration of the moist feeling are maintained. From the viewpoint of property and lack of tension, 2% by mass to 20% by mass is preferable, 5% by mass to 10% by mass is more preferable, and 6% by mass to 9% by mass, based on the total amount of the liquid skin cleaning agent composition. Mass% is particularly preferred. When the content of the component (A) is 2% by mass or more, the amount of foam and the elasticity of the foam are good, and when it is 20% by mass or less, the moisturizing feeling is sustained and the feeling of tension is good. The lack of foam is good.

<At least one cationic polymer selected from (B) dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer>
The cationic polymer of the component (B) is at least one selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and has foam elasticity and towel-dried skin. It is contained to improve the smoothness and the sustainability of the moisturizing feeling.

The dimethyldiallylammonium chloride-acrylic acid copolymer among the components (B) has a molar ratio of structural units derived from dimethyldiallylammonium chloride of 65 mol% or more, and is represented by the following general formula (B1). To.
However, in the general formula (B1), n and m indicate the molar ratio (mol%) of each structural unit, n + m = 100, and the m is 65 or more.

The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer among the components (B) includes the elasticity of bubbles, the smoothness of the skin after towel drying, and the smoothness of the skin after towel drying. From the viewpoint of sustainability of moisturizing feeling, it is 65 mol% or more, preferably 95 mol% or more. If the molar ratio is less than 65 mol%, the elasticity of the foam, the smoothness of the skin after towel drying, and the persistence of the moisturizing sensation may decrease.

The molar ratio of each structural unit in the dimethyldiallyl ammonium chloride-acrylic acid copolymer among the components (B) can be determined by measuring under the following measurement conditions by nuclear magnetic resonance (NMR).
[Measurement condition]
Solvent: heavy water (D ₂ O)
Measuring instrument: JNM-LA300 (300MHz, manufactured by JEOL Ltd.)

The weight average molecular weight of the cationic polymer of the component (B) is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 10,000 to 1,000,000, preferably 15,000 to 450. 000 is more preferable.
The weight average molecular weight of the cationic polymer of the component (B) is, for example, the SEC-MALLS-RI system (measurement conditions: column: TSKgel α series α-M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3 M aqueous solution). Can be measured with.

The viscosity of the solution of the cationic polymer of the component (B) having a solid content of 30% by mass to 44% by mass at 25 ° C. is not particularly limited and may be appropriately selected depending on the intended purpose, but 10 mPa · s. It is preferably ~ 15,000 mPa · s, more preferably 20 mPa · s ~ 12,000 mPa · s.
The viscosity can be measured, for example, using a Brookfield viscometer LVF (manufactured by Brookfield).

As the cationic polymer of the component (B), an appropriately synthesized polymer may be used, or a commercially available product may be used. Examples of commercially available products of the cationic polymer of the component (B) include the following.

Marquardt (MERQUAT) 100 (dimethyldiallyl ammonium chloride polymer (polyquaternium-6), manufactured by Lubrizol, viscosity at 25 ° C. with a solid content of 39% by mass to 44% by mass: 8,000 mPa · s to 12,000 mPa · s , Weight average molecular weight: 150,000). The viscosity was determined by using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured under the condition of 6 rotations / minute using the rotor of 3.

Marcourt 106 (dimethyldiallyl ammonium chloride polymer (polyquaternium-6), manufactured by Lubrizol, viscosity at 25 ° C. with a solid content of 30% by mass to 36% by mass: 20 mPa · s to 65 mPa · s, weight average molecular weight: 15, 000). The viscosity was determined by using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured under the condition of 60 rotations / minute using one rotor.

Marcourt 280 (dimethyldiallyl ammonium chloride-acrylic acid copolymer (polyquaternium-22), manufactured by Lubrizol, viscosity at 25 ° C. with a solid content of 39% to 43% by mass: 3,000 mPa · s ~ 6,000 mPa ·. s, weight average molecular weight: 450,000, n: m = 35: 65 (molar ratio) in the general formula (B1), molar ratio of structural units derived from dimethyldiallyl ammonium chloride is 65 mol%). The viscosity was determined by using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured under the condition of 60 rpm using the rotor of 4.

Marcourt 295 (dimethyldiallyl ammonium chloride-acrylic acid copolymer (polyquaternium-22), manufactured by Lubrizol, viscosity at 25 ° C. with a solid content of 35% to 40% by mass: 3,500 mPa · s ~ 9,000 mPa ·. s, weight average molecular weight: 190,000, n: m = 5: 95 (molar ratio) in the general formula (B1), molar ratio of structural units derived from dimethyldiallyl ammonium chloride is 95 mol%). The viscosity was determined by using a Brookfield viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured under the condition of 30 rpm using the rotor of 4.

These commercially available products of the component (B) may be used alone or in combination of two or more. Among these, examples of the cationic polymer of the component (B) include Marcoat 100, Marcoat 295, Marcoat 280, etc. from the viewpoints of foam elasticity, smoothness of the skin after towel drying, and persistence of moisturizing feeling. Preferably, Marurt 100, Marcourt 106, Marcourt 295 and the like are more preferred.

The content of the cationic polymer of the component (B) includes a large amount of foam, elasticity of foam, smoothness of the skin after towel drying, persistence of moisturizing feeling, and non-stickiness after towel drying. From this point of view, 0.03% by mass to 1% by mass is preferable, 0.05% by mass to 0.5% by mass is more preferable, and 0.05% by mass to 0.05% by mass, based on the total amount of the liquid skin cleansing composition. 0.2% by mass is particularly preferable. When the content of the component (B) is 0.03% by mass or more, the elasticity of the foam, the smoothness of the skin after towel drying, and the durability of the moisturizing feeling are good, and when it is 1% by mass or less. If there is, the amount of foam and the non-stickiness after towel drying are good.

<(C1) Polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 19 to 24 and an average addition mole number of ethylene oxide of 5 to 20 moles>
The polyoxyethylene (POE) alkyl ether type nonionic surfactant having an alkyl chain length of 19 to 24 and an average addition mole number of ethylene oxide of 5 to 20 moles of the component (C1) is moisturizing. It is contained to improve the sustainability of the sensation.
The component (C1) may be used alone or in combination of two or more.

The alkyl chain length of the alkyl group in the POE alkyl ether type nonionic surfactant of the component (C1) is 19 to 24, but 20 to 22 is preferable from the viewpoint of sustaining the moist feeling.

The alkyl group in the POE alkyl ether type nonionic surfactant of the component (C1) may be linear or branched, but it is branched from the viewpoint of sustaining the moist feeling. It is preferably chain-shaped.

The average number of moles of EO added in the POE alkyl ether type nonionic surfactant of the component (C1) is 5 mol to 20 mol, but 5 mol to 10 mol is preferable from the viewpoint of sustaining the moist feeling.

The POE alkyl ether type nonionic surfactant of the component (C1) is not particularly limited as long as the alkyl chain length is 19 to 24 and the average number of moles of EO added is 5 to 20 mol. , Polyoxyethylene (5) behenyl ether (average number of moles of EO added is 5 mol), polyoxyethylene (10) behenyl ether (average number of moles added of EO is 10), which can be appropriately selected according to the purpose. (Mole), polyoxyethylene (5) octyldodecyl ether (average number of moles of EO added is 5 mol), polyoxyethylene (10) octyldodecyl ether (average number of moles added of EO is 10 mol), polyoxyethylene (5) ) Decyltetradecyl ether (average number of moles of EO added is 5 mol), polyoxyethylene (20) decyltetradecyl ether (average number of moles added of EO is 20 mol), etc. are preferable, and polyoxyethylene (5) octyldodecyl is preferable. Ether is more preferred.

As the POE alkyl ether type nonionic surfactant of the component (C1), an appropriately synthesized one may be used, or a commercially available product may be used.
Examples of commercially available products of the POE alkyl ether type nonionic surfactant of the component (C1) include Emulex OD-5 (manufactured by Nichiyu Co., Ltd.), EMLEX OD-10 (manufactured by Nichiyu Co., Ltd.), and Nonion OD-. Polyoxyethylene octyldodecyl ether such as 20 (manufactured by Nichiyu Co., Ltd.); NIKKOL BB-5 (manufactured by Nikko Chemical Co., Ltd.), Nonion B-205 (manufactured by Nichiyu Co., Ltd.), EMALX BHA-20 (manufactured by Nippon Emulsion Co., Ltd.) Polyoxyethylene behenyl ether such as (manufactured by Japan Emulsion Co., Ltd.);
It is difficult to obtain a commercially available POE alkyl ether type nonionic surfactant having more than 24 carbon atoms.

The content of the POE alkyl ether type nonionic surfactant of the component (C1) is such that the amount of foam is large, the moisturizing feeling is maintained, and the liquid skin is not sticky after towel drying. With respect to the total amount of the agent composition, 0.03% by mass to 2% by mass is preferable, 0.05% by mass to 1% by mass is more preferable, and 0.05% by mass to 0.4% by mass is particularly preferable. When the content of the component (C1) is 0.03% by mass or more, the durability of the moisturizing feeling is good, and when it is 2% by mass or less, the amount of foam is large and the stickiness after towel drying is good. The lack of foam is good.

<(C2) Polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 14 to 18 and an average addition mole number of ethylene oxide of 7 to 20 moles>
The polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 14 to 18 and an average addition mole number of ethylene oxide of 7 to 20 moles of the component (C2) does not have a taut feeling. Is included to improve.
The component (C2) may be used alone or in combination of two or more.

The alkyl chain length of the alkyl group in the POE alkyl ether type nonionic surfactant of the component (C2) is 14 to 18, but 16 to 18 is preferable from the viewpoint of lack of tension.

The alkyl group in the POE alkyl ether type nonionic surfactant of the component (C2) may be linear or branched.

The average number of moles of EO added in the POE alkyl ether type nonionic surfactant of the component (C2) is 7 mol to 20 mol, but 10 mol to 15 mol is preferable from the viewpoint of lack of tension.

The POE alkyl ether type nonionic surfactant of the component (C2) is not particularly limited as long as the alkyl chain length is 14 to 18 and the average number of moles of EO added is 7 to 20 mol. , Polyoxyethylene (15) cetyl ether (average number of moles of EO added is 15 mol), polyoxyethylene (20) cetyl ether (average number of moles of EO added is 20), which can be appropriately selected depending on the intended purpose. (Mol), polyoxyethylene (11) stearyl ether (average number of moles of EO added is 11 mol), polyoxyethylene (20) stearyl ether (average number of moles of EO added is 20 mol), and the like are preferable. 15) Cetyl ether and polyoxyethylene (11) stearyl ether are more preferable.

As the POE alkyl ether type nonionic surfactant of the component (C2), an appropriately synthesized one may be used, or a commercially available product may be used.
Commercially available products of the POE alkyl ether type nonionic surfactant of the component (C2) include, for example, Nonion P-207 (manufactured by Nichiyu Co., Ltd.), EMALX 107 (manufactured by Nippon Emulsion Co., Ltd.), EMALEX 115 (Nippon Emulsion Co., Ltd.). Polyoxyethylene cetyl ethers such as (manufactured by Nippon Emulsion Co., Ltd.), EMALEX 120 (manufactured by Nippon Emulsion Co., Ltd.), PEGyl C-18 (manufactured by Toho Chemical Industry Co., Ltd.); Examples thereof include polyoxyethylene stearyl ethers such as Aoki Yushi Kogyo Co., Ltd. and NIKKOL BS-20 (manufactured by Nikko Chemical Co., Ltd.).

The content of the POE alkyl ether type nonionic surfactant of the component (C2) is such that the liquid skin cleaning agent is not sticky after towel drying because of the large amount of foam, the lack of tension, and the non-stickiness after towel drying. With respect to the total amount of the composition, 0.1% by mass to 2% by mass is preferable, 0.2% by mass to 1% by mass is more preferable, and 0.2% by mass to 0.4% by mass is particularly preferable. When the content of the component (C2) is 0.1% by mass or more, the lack of tension is good, and when it is 2% by mass or less, the amount of foam is large and the stickiness after towel drying is high. The lack is good.

<Mass ratio [(C1) / (C2)]>
The mass ratio of the content of the component (C1) to the content of the component (C2) [(C1) / (C2)] is the large amount of foam, the elasticity of the foam, and the sustainability of the moisturizing feeling. From the viewpoint of non-stickiness after towel drying, it is 0.15 to 4, but 0.25 to 0.9 is preferable. When the mass ratio [(C1) / (C2)] is 0.15 or more, the sustainability of the moisturizing feeling is good, and when it is 4 or less, the amount of bubbles and the elasticity of the bubbles are good. And the non-stickiness after towel drying is good.

<(D) Amphoteric surfactant>
The liquid skin cleansing composition may further contain the amphoteric surfactant of the component (D) to improve the amount of foam, the elasticity of the foam, and the lack of tension. Is preferable.

The amphoteric surfactant of the component (D) is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include betaine-type amphoteric surfactants and amino acid-type amphoteric surfactants. These may be used alone or in combination of two or more. Among these, a betaine-type amphoteric surfactant is preferable from the viewpoint of a large amount of foam, elasticity of foam, and lack of tension.

The betaine-type amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, an alkyl betaine-type amphoteric surfactant, an amide betaine-type amphoteric surfactant, and a sulfobetaine-type amphoteric surfactant. Examples thereof include agents, imidazolinium betaine-type amphoteric surfactants, and the like. These may be used alone or in combination of two or more.

The alkylbetaine-type amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include lauryldimethylaminoacetic acid betaine, coconut oil alkylbetaine and stearyldimethylaminoacetic acid betaine. These may be used alone or in combination of two or more.

The amide betaine type amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, amide propyl betaine laurate, coconut oil fatty acid amide propyl betaine, palm kernel oil fatty acid amide propyl betaine and the like can be selected. Can be mentioned. These may be used alone or in combination of two or more.

The sulfobetaine-type amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, laurylhydroxysulfobetaine, lauramidopropylhydroxysultaine, coconut oil fatty acid dimethylaminohydroxysulfobetaine, etc. Examples thereof include lauryldimethylaminohydroxysulfobetaine. These may be used alone or in combination of two or more.

The imidazoline-type amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid. Examples thereof include acyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine and the like. These may be used alone or in combination of two or more.

Among these, amide betaine-type amphoteric surfactants and alkyl betaine-type amphoteric surfactants are preferable from the viewpoint of the large amount of bubbles and the elasticity of bubbles, and amide propyl betaine laurate and betaine lauryldimethylaminoacetate are more preferable. Preferably, amidopropyl betaine laurate is particularly preferred.

As the component (D), one synthesized as appropriate may be used, or a commercially available product may be used.
Commercially available products of the amphoteric surfactant of the component (D) include, for example, Anchtor 24B (lauryldimethylaminoacetic acid betaine, manufactured by Kao Co., Ltd.), Nissan Anon (registered trademark) BL (lauryldimethylaminoacetic acid betaine, Nichiyu Co., Ltd.). NIKKOL AM-301 (betaine lauryldimethylaminoacetate, manufactured by Nikko Chemicals Co., Ltd.), Amogen (registered trademark) S (betaine lauryldimethylaminoacetate, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Amogen (registered trademark) S Alkyl betaine-type amphoteric surfactants such as −H (lauryldimethylaminoacetic acid betaine, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.); Enagicol L-30B (amide propyl betaine laurate, manufactured by Lion Specialty Chemicals Co., Ltd.), Nissan Anon Amidobetaine-type amphoteric surfactants such as BDF-SF (palm oil fatty acid amide propyl betaine, manufactured by Nichiyu Co., Ltd.) and obazoline CAG-30 (palm oil fatty acid amide propyl betaine, manufactured by Toho Chemical Industry Co., Ltd.) Anchor 20HD (lauryl hydroxysulfobetaine, manufactured by Kao Co., Ltd.), softazoline LSB (lauramidopropyl hydroxysultaine, manufactured by Kawaken Fine Chemical Co., Ltd.) and other sulfobetaine-type amphoteric surfactants; NIKKOL AM-101 (2-alkyl) -N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, manufactured by Nikko Chemical Co., Ltd., Nissan Anon (registered trademark) GLM-R-LV (2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium) Examples thereof include imidazoline-type amphoteric surfactants such as betaine (manufactured by Betaine Co., Ltd.).

The content of the amphoteric surfactant of the component (D) is not particularly limited and may be appropriately selected depending on the intended purpose, but the amount of foam, the elasticity of the foam, and the lack of tension are all present. From the viewpoint of non-stickiness after towel drying, 2% by mass to 15% by mass is preferable, 3% by mass to 10% by mass is more preferable, and 4% by mass to 10% by mass, based on the total amount of the liquid skin cleaning agent composition. Mass% is particularly preferred.

<Other ingredients>
In addition to the component (A), the component (B), the component (C1), the component (C2), and the component (D), the liquid skin cleansing composition does not impair the effects of the present invention. Other ingredients can be blended in the range as needed.
Examples of the other components include a solvent (purified water, etc.), a water-soluble polymer other than the cationic polymer of the component (B), a nonionic surfactant other than the component (C1) and the component (C2), and the like. Moisturizers, sugars, oils, lower alcohols, higher alcohols and other alcohols, lanolin derivatives, protein derivatives, acrylic resin dispersions, vitamins and other chemicals, bactericides, preservatives, pH regulators, antioxidants, metal sequestering agents, Examples thereof include ultraviolet absorbers, animal and plant extracts or derivatives thereof, pigments, fragrances, fragrance compositions, pigments and the like. These may be used alone or in combination of two or more.
However, it is preferable to exclude a thickener such as glycol distearate from the other components.

The content of the other components is not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately selected depending on the intended purpose.

<pH>
The pH of the liquid skin cleansing composition at 25 ° C. is preferably 9 to 11 and more preferably 10 from the viewpoints of a large amount of foam, a long-lasting moisturizing feeling, and a lack of tension. When the pH is 9 or more, the amount of foam is good, and when the pH is 11 or less, the amount of foam is good, the feeling of moisture is sustained, and the feeling of tension is not good.
The pH can be measured, for example, using a pH meter (HM-30R, manufactured by TOA DKK Corporation).

<Viscosity>
The viscosity of the liquid skin cleansing composition is 3 mPa · s to 30 mPa at 25 ° C. from the viewpoint of a large amount of foam and lack of tension because the composition is used by filling it in a former container. -S is preferable, 5 mPa · s to 25 mPa · s is more preferable, and 5 mPa · s to 21 mPa · s is particularly preferable. When the viscosity is 3 mPa · s or more, the elasticity of the foam is good, and when it is 30 mPa · s or less, the amount of the foam and the elasticity of the foam are good.
For the viscosity, for example, using a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.), the temperature of the liquid skin cleansing composition was set to 25 ° C., and the number of revolutions was 60 rpm. It can be measured by measuring the viscosity after 1 minute with the rotor of 1.

<Former container>
The liquid skin cleansing composition of the present invention is filled in a former container. The former container is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a non-gas type foam discharge container. The non-gas type foam discharge container is not particularly limited as long as the liquid skin cleansing composition and air can be mixed and discharged in a foamed state, and can be appropriately selected depending on the intended purpose, for example. Examples include a squeeze former container that can discharge bubbles by manually pressing the bottle body, and a pump former container that can discharge bubbles by pushing down the nozzle. As such a former container, for example, a former container manufactured by Daiwa Seikan Co., Ltd., Yoshino Kogyosho Co., Ltd., or the like can be used.

The non-gas type foam discharge container usually has a porous membrane for forming foam, and foam is formed by passing the skin cleansing composition through the porous membrane.

The material of the porous membrane is not particularly limited and may be appropriately selected from those used for non-gas type foam discharge containers, but plastic materials such as nylon, polyester and polyolefin are preferable.

The mesh of the porous membrane body is not particularly limited and may be appropriately selected depending on the intended purpose, but 100 mesh or more is preferable, and 100 mesh to 255 mesh is more preferable.

The number of the porous membranes is not particularly limited and may be appropriately selected depending on the intended purpose, but from the viewpoint of improving the foam performance, 2 to 4 are preferable, and 2 is more preferable.

More specifically, as the former container, the former container described in JP-A-2007-222733, JP-A-2005-193972 and the like can be preferably used.

-Manufacturing method-
The method for producing the liquid skin cleansing composition of the present invention is not particularly limited and may be appropriately selected depending on the intended purpose. For example, the component (A), the component (B), and the component (C1). , And the component (C2), and if necessary, the component (D), the other components, and the like can be mixed and dissolved to produce the product.

Specifically, water and the other component, if necessary, are mixed and heated to 70 ° C. to 80 ° C., and then the anionic surfactant of the component (A) and the component (C1). The nonionic surfactant and the nonionic surfactant of the component (C2) are dissolved, cooled to 40 ° C. or lower, and then the cationic polymer of the component (B) and, if necessary, the (D). It can be produced by adding and dissolving an amphoteric surfactant as a component.

The liquid skin cleansing composition may be prepared using an apparatus. The device is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a stirring device having a shearing force and having a stirring blade capable of mixing the whole.
The stirring blade is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a propeller, a turbine and a dispenser.

-Use-
The liquid skin cleansing composition of the present invention has a large amount of foam, elasticity of foam, smoothness of skin after towel drying, long-lasting moisturizing feeling, lack of tension, and skin after towel drying. Since it is excellent in non-stickiness, it is suitably used for, for example, washing pigments, hand soaps, body soaps, cleansing foams, makeup removers, etc., and is particularly preferably used for hand soaps.

The present invention will be described in more detail below based on Examples and Comparative Examples, but the present invention is not limited to the following Examples.

The content of each component described in Examples and Comparative Examples is indicated by "mass%" and is a value converted to pure content. The mass ratio of the content of the component (C1) to the content of the component (C2) [(C1) / (C2)] is described by rounding off the third decimal place to obtain the second decimal place.

(Examples 1-32 and Comparative Examples 1-12)
Liquid skin cleansing compositions having the compositions and contents shown in Tables 1 to 7 below were prepared by the following methods.
Specifically, the common ingredients such as purified water, propylene glycol, monoethanolamine, edetic acid, and fragrance are used, and the amount is 75% by mass of the total amount of the final liquid skin cleansing composition. A mixture was prepared. After heating the mixture of the common components to 70 ° C. to 80 ° C., the anionic surfactant of the component (A), the nonionic surfactant of the component (C1), or the comparative component of the component (C1), and The nonionic surfactant of the component (C2) or the comparative component of the component (C2) was added and dissolved. Then, the mixture is cooled to 40 ° C. or lower, and the cationic polymer of the component (B), the comparative component of the component (B), and if necessary, the amphoteric surfactant of the component (D) are added and dissolved to make the liquid A skin cleansing composition was prepared. After that, if the pH is less than the predetermined pH, potassium hydroxide, which is a common component, is added, the pH is adjusted to 10, and purified water is added so that the total amount becomes 100% by mass, and the liquid skin of Examples and Comparative Examples is added. A cleaning composition was obtained.
The mixing of each component was carried out by using a propeller as a stirring blade and stirring using a three-one motor (HEIDON BL1200, manufactured by Shinto Chemical Co., Ltd.). The pH of the obtained liquid skin cleansing composition was measured at 25 ° C. for 3 minutes after constant temperature at 25 ° C. using a pH meter (HM-30R, manufactured by TOA DKK Corporation). The viscosity of the obtained liquid skin cleansing composition was kept at a constant temperature of 25 ° C., and then a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) was used at 25 ° C. Using the rotor of 1, the measurement was performed under the condition of 1 minute at a rotation speed of 60 rotations / minute.

The obtained liquid skin cleansing compositions of Examples 1 to 32 and Comparative Examples 1 to 12 were placed in a container with a former pump dispenser (discharge amount 1 mL, 2 sheets of 100 mesh, manufactured by Yoshino Kogyosho Co., Ltd.). It was filled and designated as container "1" in Tables 1 to 7 below. Further, the obtained liquid skin cleansing composition of Comparative Example 12 was filled in a container with a pump dispenser (discharge amount 1 mL, manufactured by Yoshino Kogyosho Co., Ltd., nozzle diameter (inner diameter) 3.6 mm), and is shown in Table 7 below. Notated as container "2".

For each of the prepared liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12, "a large amount of foam", "elasticity of foam", and "after towel drying" were performed as follows. The smoothness of the skin, the sustainability of the moisturizing feeling, the lack of tension, and the non-stickiness after towel drying were evaluated. The results are shown in Tables 1 to 7 below.

<Evaluation of the amount of bubbles>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, and rubbed the palms of both hands 5 times in a reciprocating manner. The large amount was observed and evaluated based on the following evaluation criteria. Next, the average value (average evaluation score) of the evaluation points evaluated by the 10 expert evaluators was obtained, and the "large amount of bubbles" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○", "○ to ◎", or "◎".
-Evaluation criteria for "a large amount of bubbles"-
5 points: The amount of foam after rubbing is the amount that overflows from the palms of both hands 4: The amount of foam after rubbing is 90% or more of the area of the palms of both hands to the same amount as the area of the palms 3 points: The amount of foam after rubbing is 60% or more and less than 90% of the area of the palms of both hands. 2 points: The amount of foam after rubbing is 30 of the area of the palms of both hands. % To less than 60% 1 point: The amount of foam after rubbing is less than 30% of the area of the palms of both hands-Criteria for "large amount of foam"-
◎: Average evaluation score is 4.0 points or more and 5.0 points or less ○ ～ ◎: Average evaluation point is 3.5 points or more and less than 4.0 points ○: Average evaluation point is 3.0 points or more and less than 3.5 points Δ: Average evaluation score is 2.0 points or more and less than 3.0 points ×: Average evaluation point is 1.0 points or more and less than 2.0 points

<Evaluation of foam elasticity>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, rubbed the palms of both hands 5 times, and then foamed. The elasticity of the foam was observed by holding it between both hands and pulling it apart to make the foam stand, and evaluated based on the following evaluation criteria. Next, the average value (average evaluation point) of the evaluation points evaluated by the 10 expert evaluators was obtained, and the "elasticity of the bubble" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○", "○ to ◎", or "◎".
-Evaluation criteria for "foam elasticity"-
5 points: Feel the elasticity of bubbles and horns of 2 cm or more 4 points: Feel the elasticity of bubbles and horns of 1 cm or more and less than 2 cm 3 points: Feel the elasticity of bubbles and horns of 0.1 cm or more and less than 1 cm 2 points : Feel the elasticity of the foam but the horns do not stand 1 point: Do not feel the elasticity of the foam-Criteria for "elasticity of the foam"-
◎: Average evaluation score is 4.0 points or more and 5.0 points or less ○ ～ ◎: Average evaluation point is 3.5 points or more and less than 4.0 points ○: Average evaluation point is 3.0 points or more and less than 3.5 points Δ: Average evaluation score is 2.0 points or more and less than 3.0 points ×: Average evaluation point is 1.0 points or more and less than 2.0 points

<Evaluation of skin smoothness after towel drying>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, and rubbed the palm and the back of the hand 5 times each to and from the hand skin. After washing the whole, it was towel-dried. This washing was performed 7 times a day, and 5 minutes after the 7th washing and towel drying, the palm was slid on the back of the hand, and the smoothness of the surface of the back of the hand was evaluated based on the following evaluation criteria. Next, the average value (average evaluation score) of the evaluation points evaluated by the 10 expert evaluators was obtained, and the "smoothness of the skin after towel drying" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○" or "◎".
-Evaluation criteria for "smoothness of skin after towel drying"-
5 points: The surface of the back of the hand is smooth and the palm slides well 4 points: The surface of the back of the hand is slightly smooth and the palm slides 3 points: The surface of the back of the hand is slightly smooth and the palm slides smoothly 2 points: The surface of the back of the hand Not smooth, but the palm is not smooth 1 point: The surface of the back of the hand feels rough and the palm is not smooth-Criteria for "smoothness of the skin after towel drying"-
⊚: Average evaluation score is 4.0 points or more and 5.0 points or less ○: Average evaluation point is 3.0 points or more and less than 4.0 points Δ: Average evaluation point is 2.0 points or more and less than 3.0 points ×: Average evaluation score is 1.0 points or more and less than 2.0 points

<Evaluation of sustainability of moisturizing feeling>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, and rubbed the palm and the back of the hand 5 times each to and from the hand skin. After washing the whole, it was towel-dried. This washing was performed 7 times a day, and 5 minutes after the 7th washing and towel drying, the feeling of moisturized hands was evaluated based on the following evaluation criteria. Next, the average value (average evaluation score) of the evaluation points evaluated by the 10 expert evaluators was obtained, and the "sustainability of moisturizing feeling" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○" or "◎".
-Evaluation criteria for "sustainability of moisturizing feeling"-
5 points: Feeling a strong feeling of moisture 4 points: Feeling a feeling of moisture 3 points: Feeling a feeling of moisture a little 2 points: Feeling a feeling of moisture not so much 1 point: Feeling a feeling of moisture at all-"Durability of feeling of moisture" Judgment criteria-
⊚: Average evaluation points 4.0 points or more and 5.0 points or less ○: Average evaluation points 3.0 points or more and less than 4.0 points Δ: Average evaluation points 2.0 points or more and less than 3.0 points ×: Average evaluation points 1.0 points or more and less than 2.0 points

<Evaluation of lack of tension>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, and rubbed the palm and the back of the hand 5 times each to and from the hand skin. After washing the whole, it was towel-dried. This washing was performed 7 times a day, and 5 minutes after the 7th washing and towel drying, the feeling of tightness of the hand skin was evaluated based on the following evaluation criteria. Next, the average value (average evaluation score) of the evaluation points evaluated by the 10 expert evaluators was obtained, and the "lack of tension" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○", "○ to ◎", or "◎".
-Evaluation criteria for "lack of tension"-
4 points: No feeling of tension 3 points: Feeling a little tension 2 points: Feeling a feeling of tension 1 point: Feeling a very feeling of tension
-Criteria for "no feeling of tension"-
◎: 3.7 points or more and 4.0 points or less ○ ～ ◎: 3.3 points or more and less than 3.7 points ○: 3.0 points or more and less than 3.3 points Δ: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<Evaluation of non-stickiness after towel drying>
Ten expert evaluators took 1 push (about 1 g) of each liquid skin cleansing composition of Examples 1 to 32 and Comparative Examples 1 to 12 on the palm, and rubbed the palm and the back of the hand 5 times each to and from the hand skin. After washing the whole, it was towel-dried. This washing was performed 7 times a day, and immediately after the 7th washing and towel drying, stickiness was evaluated based on the following evaluation criteria. Next, the average value (average evaluation score) of the evaluation points evaluated by the 10 expert evaluators was obtained, and "non-stickiness after towel drying" was determined based on the following criteria.
The pass level was defined as the case where the judgment criteria were "○" or "◎".
-Evaluation criteria for "non-stickiness after towel drying"-
5 points: No stickiness at all 4 points: Almost no stickiness 3 points: Slightly sticky but no problem level 2 points: Feels sticky 1 point: Strongly feels sticky- "Stickiness after towel drying" Criteria for "nothing"-
⊚: Average evaluation points 4.0 points or more and 5.0 points or less ○: Average evaluation points 3.0 points or more and less than 4.0 points Δ: Average evaluation points 2.0 points or more and less than 3.0 points ×: Average evaluation points 1.0 points or more and less than 2.0 points

Details of each component used in the above Examples and Comparative Examples are shown in Table 8 below.

The liquid skin cleansing composition of the present invention has a large amount of foam, elasticity of foam, smoothness of skin after towel drying, long-lasting moisturizing feeling, lack of tension, and skin after towel drying. Since it is not sticky, it is suitably used for, for example, washing pigments, hand soaps, body soaps, cleansing foams, and makeup removers.

Claims (5)

(A) Anionic surfactant and
(B) At least one cationic polymer selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and
(C1) A polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 19 to 24 and an average addition mole number of ethylene oxide of 5 to 20 mol.
(C2) Contains a polyoxyethylene alkyl ether type nonionic surfactant having an alkyl chain length of 14 to 18 and an average addition mole number of ethylene oxide of 7 to 20 mol.
The mass ratio [(C1) / (C2)] of the content of the component (C1) to the content of the component (C2) is 0.15-4.
The molar ratio of the structural unit derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more.
A liquid skin cleansing composition characterized by being filled in a former container. (D) The liquid skin cleansing composition according to claim 1, further containing an amphoteric surfactant. The liquid skin cleansing composition according to any one of claims 1 to 2, wherein the viscosity at 25 ° C. is 5 mPa · s to 25 mPa · s. The content of the component (A) is 5% by mass to 10% by mass, the content of the component (B) is 0.05% by mass to 0.5% by mass, and the content of the component (C1) is 0. The liquid skin cleaning agent composition according to any one of claims 1 to 3, wherein the content is 05% by mass to 1% by mass and the content of the component (C2) is 0.2% by mass to 1% by mass. The liquid skin cleansing composition according to any one of claims 2 to 4, wherein the content of the component (D) is 3% by mass to 10% by mass.