JP2022101128A - Liquid skin cleanser composition - Google Patents

Abstract

To provide a liquid skin cleanser composition having excellent foam sustainability and sufficiently satisfying the sustainability of all of skin moisture feeling after drying with towel, no stickiness of skin after drying with towel, skin dry feeling after drying with towel.SOLUTION: There is provided a liquid skin cleanser composition which comprises (A) an anionic surfactant, (B) at least one cationic polymer selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, (C) a quaternary ammonium salt containing a long-chain alkyl group and (D) at least one selected from dimethicone and dimethiconol, wherein the molar ratio of a structural unit derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more and the mass ratio [{(B)+(C)}/(A)] of the total content of the component (B) and the component (C) to the content of the component (A) is 0.005 to 0.08.SELECTED DRAWING: None

Description

The present invention relates to a liquid skin cleansing composition.

Conventionally, it has been desired that a liquid skin cleansing composition such as hand soap and body soap has good foaming performance such as foam retention and imparts a moist feeling to the skin after washing. Further, in a hot summer climate, it is desired to provide a liquid skin cleansing composition which can give a smooth feeling without stickiness for a long time after washing and has high moisturizing property.

In order to improve the condition of the skin after washing, for example, a liquid skin cleansing composition containing a fatty acid salt and a cationic polymer having a structural unit derived from dimethyldiallyl ammonium chloride has been proposed (for example,). See Patent Document 1). However, the proposed liquid skin cleansing composition was not satisfactory in terms of the sustainability of the moist feeling of the skin after towel drying and the smooth feeling of the skin after towel drying.

Further, a liquid skin cleansing composition containing a fatty acid salt, a cationic polymer, an oil agent, a silicone, and a polyhydric alcohol has been proposed (see, for example, Patent Document 2). However, the proposed liquid skin cleansing composition is not sufficiently satisfactory in terms of the moist feeling of the skin after towel drying, the non-stickiness of the skin after towel drying, and the sustainability of the smooth feeling of the skin after towel drying. I didn't.

Therefore, a liquid skin cleansing composition that has excellent foam retention and well satisfies all of the moist feeling of the skin after towel drying, the non-stickiness of the skin after towel drying, and the sustainability of the smooth feeling of the skin after towel drying. Is desired to be provided.

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

An object of the present invention is to solve the above-mentioned problems in the prior art and to achieve the following objects. That is, the present invention has excellent foam retention, and liquid skin that satisfactorily satisfies all of the moist feeling of the skin after towel drying, the non-stickiness of the skin after towel drying, and the sustainability of the smooth feeling of the skin after towel drying. It is an object of the present invention to provide a cleaning agent composition.

As a result of diligent studies to achieve the above object, the present inventor has (A) an anionic surfactant, (B) a dimethyldiallyl ammonium chloride polymer, and dimethyldiallyl chloride in a liquid skin cleaning composition. At least one cationic polymer selected from the ammonium-acrylic acid copolymer, (C) a quaternary ammonium salt containing a long-chain alkyl group, and (D) at least one selected from dimethicone and dimethiconol. The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldialyllammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more, and the molar ratio of the structural unit is 40 mol% or more. By setting the mass ratio [{(B) + (C)} / (A)] to the total content of the component (B) and the component (C) to 0.005 to 0.08, the foam lasts. It was found that it is excellent in, does not have stickiness on the skin after towel drying even in the hot summer climate, can give the skin a smooth feeling for a long time after towel drying, and is also excellent in the moist feeling of the skin after towel drying. ..

The present invention is based on the above-mentioned knowledge by the present inventor, 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 the dimethyldiallylammonium chloride polymer and the dimethyldiallylammonium chloride-acrylic acid copolymer, and
(C) A quaternary ammonium salt containing a long-chain alkyl group and
(D) At least one selected from dimethicone and dimethiconol, and
Contains,
The molar ratio of the structural unit derived from dimethyldiallyl ammonium chloride in the dimethyldiallyl ammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more.
The mass ratio [{(B) + (C)} / (A)] of the content of the component (A) to the total content of the component (B) and the component (C) is 0.005 to. It is a liquid skin cleansing composition which is 0.08.
<2> The content of the component (A) is 10% by mass to 20% by mass.
The content of the component (B) is 0.2% by mass to 0.8% by mass.
The content of the component (C) is 0.005% by mass to 0.04% by mass.
The liquid skin cleansing composition according to <1>, wherein the content of the component (D) is 0.02% by mass to 0.4% by mass.
<3> The liquid skin cleansing composition according to any one of <1> to <2>, which is filled in a former container.

According to the present invention, the above-mentioned problems in the prior art can be solved, the above-mentioned object can be achieved, the foam retention is excellent, the skin feels moist after towel-drying, the skin is not sticky after towel-drying, and the towel-drying is performed. It is possible to provide a liquid skin cleansing composition that satisfactorily satisfies all of the persistence of the smoothness of the skin afterwards.

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

<(A) Anionic surfactant>
The anionic surfactant as the component (A) is mainly contained to improve foam retention. In addition, in this specification, "foam retention" means that the foam is maintained without disappearing.

The anionic surfactant of the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a higher fatty acid salt, a polyoxyethylene (POE) alkyl ether sulfate, or an ether carboxylic acid. Examples include salts and amino acid-based surfactants. These may be used alone or in combination of two or more. Among these, higher fatty acid salts are preferable from the viewpoint of foam retention, moist feeling of the skin after towel drying, and sustainability of the smooth feeling of the skin after towel drying.

-Higher fatty acid salt-
The higher fatty acid salt in the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose. For example, laurate salt, myristic acid salt, palmitic acid salt, stearate salt and the like can be selected. Can be mentioned. These may be used alone or in combination of two or more. Among these, higher fatty acid salts containing both lauric acid salt and myristic acid salt are preferable from the viewpoint of holding foam, moisturizing the skin after towel drying, and sustaining the smooth feeling of the skin after towel drying.

The counter ion of the higher fatty acid salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include alkali metal salts, amine salts and amino acid salts.
The alkali metal salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include sodium salt and potassium salt.
The amine salt is not particularly limited and may be appropriately selected depending on the intended purpose. For example, ammonium salt; monoethanolamine salt, diethanolamine salt, triethanolamine salt, 2-amino-2-methylpropanol, 2 Examples thereof include alkanolamine salts such as -amino-2-methylpropanediol.
The amino acid salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include lysine salt and arginine salt.
Among these, an alkali metal salt is preferable, and a potassium salt is particularly preferable, in terms of excellent foam retention.

As the higher fatty acid salt, those synthesized as appropriate may be used, or commercially available products may be used.
Examples of commercially available products of the higher fatty acid salt include NIKKOL potassium laurate LK-120 (potassium laurate, manufactured by Nikko Chemicals Co., Ltd.) and NIKKOL potassium myristate MK-140 (potassium myristate, Nikko Chemicals Co., Ltd.). (Manufactured by the company), Tysoap MNK-40 (Potassium oil fatty acid potassium / potassium myristate mixed liquid, manufactured by Nikko Chemicals Co., Ltd.) and the like.

The higher fatty acid salt can be blended as a higher fatty acid salt, but the higher fatty acid and the salt as a counter ion such as potassium hydroxide are separately added to a blending tank to cause a neutralization reaction. It may be used as a higher fatty acid salt.

As the higher fatty acid used for preparing 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, manufactured by Nichiyu Co., Ltd.) and NAA (registered trademark) -142 (myristic acid, manufactured by Nichiyu Co., Ltd.). ), NAA (registered trademark) -160 (palmitic acid, manufactured by Nichiyu Co., Ltd.), NAA (registered trademark) -180 (stearic acid, manufactured by Nichiyu Co., Ltd.) and the like.

The content of the lauric acid salt is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 3% by mass to 12% by mass, preferably 7% by mass, based on the total amount of the liquid skin cleansing composition. % To 10% by mass is more preferable.

The content of the myristic acid salt is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 4% by mass to 14% by mass, preferably 8% by mass, based on the total amount of the liquid skin cleansing composition. % To 14% by mass is more preferable.

The content of the palmitic acid salt is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 1% by mass to 9% by mass, preferably 3% by mass, based on the total amount of the liquid skin cleansing composition. % To 9% by mass is more preferable.

The content of the stearate is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 0.1% by mass to 3% by mass with respect to the total amount of the liquid skin cleansing composition. More preferably, it is 0.2% by mass to 1% by mass.

-Polyoxyethylene alkyl ether sulfate-
The polyoxyethylene alkyl ether sulfate in the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a compound represented by the following general formula (A1) may be used. Can be mentioned. The polyoxyethylene alkyl ether sulfate may be used alone or in combination of two or more.

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

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

In the general formula (A1), X represents an alkali metal or ammonium.
The alkali metal is not particularly limited and may 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), 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) Ether ether sulfate, polyoxyethylene (2) lauryl ether ammonium sulfate, polyoxyethylene (3) lauryl ether ammonium sulfate and the like.
The numerical value in () represents the average number of moles of added ethylene oxide (EO) (n).

As the polyoxyethylene alkyl ether sulfate, a synthetic product 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 (manufactured by BASF, polyoxyethylene (2) sodium lauryl ether sulfate) and Sinoline SPE-1250. (Polyoxyethylene (2) sodium lauryl ether sulfate manufactured by Shin Nihon Rika Co., Ltd.) and the like can be mentioned.

-Ether carboxylate-
The ether carboxylate in the component (A) is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a compound represented by the following general formula (A2) or (A3) may be used. Can be mentioned. The ether carboxylate may be used alone or in combination of two or more.

In the general formulas (A2) and (A3), R8 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. The number of carbon atoms ⁱⁿ the R8 moiety, which indicates a phenyl group substituted with a group, is preferably 10 to 14.

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

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

Specific examples of the ether carboxylate represented by the general formula (A2) or (A3) include polyoxyethylene (3) sodium lauryl ether acetate, polyoxyethylene (4) potassium lauryl ether acetate, and sodium lauryl glycol acetate. And so on.
The numerical value in () represents the average number of moles of alkylene oxide added (o).

As the ether carboxylate, an appropriately synthesized one may be used, or a commercially available product may be used.
Commercially available products of the ether carboxylate include, for example, Enagicol EC-30 (manufactured by Lion Specialty Chemicals Co., Ltd., polyoxyethylene (3) sodium lauryl ether acetate) and Beaulite LCA-25F (poly). Oxyethylene (3) lauryl ether acetate sodium), burite LCA-30D (polyoxyethylene (3) lauryl ether acetate sodium), burite LCA-H (polyoxyethylene (4) lauryl ether acetate), burite LCA- 25NH (laureth-4carboxylic acid), burite SHAA (sodium laurylglycolcarboxylate), burite LCA (polyoxyethylene (3) sodium lauryl ether acetate) (all manufactured by Sanyo Kasei Kogyo Co., Ltd.), Kao Akipo RLM-45NV (Polyoxyethylene (4.5) sodium lauryl ether acetate), Kaoakipo RLM-100NV (polyoxyethylene (10) sodium lauryl ether acetate) (all manufactured by Kao Co., Ltd.) and the like can be mentioned.
The numerical value in () represents the average number of moles of alkylene oxide added (o).

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

In the general formula (A4), R ¹⁰ 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. Indicates a phenyl group. The number of carbon atoms in the R10 portion is preferably ⁸ to 18.

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

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

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

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

The amino acid structure of the hydrophilic portion of the amino acid-based 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-based surfactant represented by the general formula (A4) include N-acyl-glycine such as N-cocoyl-glycine potassium (N-coconut oil fatty acid acylglycine potassium) and salts thereof; N-. N-acyl-N-carboxyethyl-glycine and its salts such as myristoyl-N-carboxyethyl-glycine sodium; N-myristoyl-L-sodium glutamate, N-myristoyl-L-potassium glutamate, N-palm oil fatty acid acyl- N-acylglutamic acid such as potassium L-glutamate, N-palm fatty acid acyl-L-sodium glutamate, N-stearoyl-sodium glutamic acid and salts thereof; N-lauroyl-N-methyl-β-alanine potassium and the like can be mentioned. ..

As the amino acid-based surfactant, one synthesized appropriately may be used, or a commercially available product may be used.
Commercially available products of the amino acid-based surfactant include, for example, amyrite (registered trademark) GCK-11 (N-palm oil fatty acid acylglycine potassium) and amylite (registered trademark) GCK-12K (N-palm oil) as commercial products. Amino Acid Acylglycine Potassium), Amylite® GCS-12K (N-Palm Oil Fatty Acid Acrylic Glycin Sodium), Amylite® GCS-11 (N-Palm Oil Fatty Acid Acrylic Glycin Sodium), Amisoft® CS -11 (N-myristoyl-L-sodium glutamate), Amisoft® CS-22 (N-palm oil fatty acid acyl-L-sodium glutamate), Amisoft® 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-sodium glutamate), Amisoft (registered trademark) HS21 (N-stearoyl-L-sodium glutamate), Amylite (registered trademark) ACS-12 (sodium cocoylalanine) (above, Ajinomoto Healthy) Supply Co., Ltd.), Amino Surfact (registered trademark) AMMS-P1 (N-myristoyl-L-sodium glutamate) (Asahi Kasei Chemicals Co., Ltd.), NIKKOL sarcosinate MN (myristoylmethylaminoacetate sodium), NIKKOL alaninate LN-30 (Lauroylmethyl-β-alanine sodium) (above, manufactured by Nikko Chemicals Co., Ltd.), Alanon ACE (palm oil fatty acid methylalanine sodium), Alanon AME (myristylmethyl-β-alanine sodium), Alanon ALE (lauroylmethyl-β-) Alanin Sodium) (above, Kawaken Fine Chemicals Co., Ltd.), Energycol L-30AN (Lauroylmethyl-β-Alanin Sodium) (Lion Specialty Chemicals Co., Ltd.), Softilt AT-L (Lauroylmethyl-β-Alanine Sodium) ) (Manufactured by Nichiyu Co., Ltd.).

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 it is a liquid from the viewpoint of foam retention and moist feeling of the skin after towel drying. It is preferably 8% by mass to 30% by mass, more preferably 10% by mass to 20% by mass, based on the total amount of the skin cleansing composition. When the content of the component (A) is 8% by mass or more, the moist feeling of the skin after foam retention and towel drying is good, and when it is 30% by mass or less, the moist feeling of the skin after towel drying is good. Is good.

<At least one cationic polymer selected from (B) dimethyldiallyl ammonium chloride polymer and dimethyldiallyl ammonium chloride-acrylic acid copolymer>
The cationic polymer as the component (B) is at least one selected from a dimethyldiallyl ammonium chloride polymer and a dimethyldiallyl ammonium chloride-acrylic acid copolymer, and is mainly after foam holding and towel drying. It is contained to improve the moist feeling of the skin.

ただし、前記一般式（Ｂ１）中、ｎ、及びｍは、各構造単位のモル比率（モル％）を示し、ｎ＋ｍ＝１００であり、前記ｍは４０モル％以上である。 The dimethyldiallyl ammonium chloride-acrylic acid copolymer in the component (B) is represented by the following general formula (B1).

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

The molar ratio of the structural unit derived from dimethyldiallyl ammonium chloride in the dimethyldiallyl ammonium chloride-acrylic acid copolymer among the components (B) is 65 from the viewpoint of foam retention and moist feeling of the skin after towel drying. It is preferably mol% or more, and more preferably 90 mol% or more.
The dimethyldiallyl ammonium chloride-acrylic acid copolymer may be used alone or in combination of two or more.

The molar ratio of each structural unit in the dimethyldiallyl ammonium chloride-acrylic acid copolymer in the component (B) can be determined by measuring under the following measurement conditions by nuclear magnetic resonance (NMR).
[Measurement condition]
Solvent: heavy water ₍ D2O)
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. However, from the viewpoint of the moist feeling of the skin after towel drying, 10,000 to It is preferably 1,000,000, more preferably 15,000 to 450,000.
The weight average molecular weight of the cationic polymer of the component (B) is, for example, the SEC-MALLS-RI system (measurement conditions: column: TSKgelα series α-M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3 M aqueous solution). ) Can be measured.

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 preferably 10 mPa · s to 15,000 mPa · s, preferably 20 mPa · s to 12,000 mPa · s. s is more preferable.
The viscosity can be measured, for example, using a Brookfield viscometer LVF (manufactured by Brookfield).

As the cationic polymer of the component (B), one synthesized appropriately 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 under the trade name.

MERQUAT 100 (component name: dimethyldiallyl ammonium chloride polymer, manufactured by Japan Lubrizol Co., Ltd., viscosity at 25 ° C. with 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 (component name: dimethyldiallyl ammonium chloride polymer, manufactured by Japan Lubrizol Co., Ltd., 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 rpm using the rotor of 1.

Marcourt 280 (ingredient name: dimethyldiallyl ammonium chloride-acrylic acid copolymer, manufactured by Japan Lubrizol Co., Ltd., viscosity at 25 ° C. with solid content of 39% by mass 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 (1), 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 (Ingredient name: Dimethyldiallyl ammonium chloride-acrylic acid copolymer, manufactured by Japan Lubrizol Co., Ltd., viscosity at 25 ° C. with a solid content of 35% by mass 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 (1), 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.

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

The content of the cationic polymer of the component (B) is not particularly limited and may be appropriately selected depending on the intended purpose, but has foam retention, a moist feeling of the skin after towel drying, and after towel drying. From the viewpoint of non-stickiness of the skin, 0.1% by mass to 1% by mass is preferable, and 0.2% by mass to 0.8% by mass is more preferable with respect to the total amount of the liquid skin cleaning agent composition. When the content of the component (B) is 0.1% by mass or more, the moist feeling of the skin after foam retention and towel drying is good, and when it is 1% by mass or less, the skin after towel drying is good. Good non-stickiness.

<(C) Quaternary ammonium salt containing long-chain alkyl group>
The long-chain alkyl group-containing quaternary ammonium salt as the component (C) is mainly contained to improve the durability of the smooth feeling of the skin after towel drying.

The carbon number of the long-chain alkyl group in the long-chain alkyl group-containing quaternary ammonium salt of the component (C) is not particularly limited and may be appropriately selected depending on the intended purpose, but 6 to 24 is preferable.

The number of long-chain alkyl groups in the long-chain alkyl group-containing quaternary ammonium salt of the component (C) is not particularly limited and may be appropriately selected depending on the intended purpose, but one or two is preferable. Is more preferable.

Specific examples of the long-chain alkyl group-containing quaternary ammonium salt having one long-chain alkyl group in the component (C) include lauryltrimethylammonium salt, cetyltrimethylammonium salt, stearyltrimethylammonium salt, and behenyltrimethylammonium. Examples thereof include a salt, a cetyldimethylbenzylammonium salt, a stearyldimethylbenzylammonium salt, and a behenyldimethylbenzylammonium salt.
Specific examples of the quaternary ammonium salt containing a long-chain alkyl group having two long-chain alkyl groups in the component (C) include disetyldimethylammonium salt, distearyldimethylammonium salt, and dibehenyldimethylammonium salt. Examples thereof include disetylmethylbenzylammonium salt, distearylmethylbenzylammonium salt and dibehenylmethylbenzylammonium salt.
Specific examples of the quaternary ammonium salt containing a long-chain alkyl group having three long-chain alkyl groups in the component (C) include tricetylmethylammonium salt, tristearylmethylammonium salt, and tribehenylmethylammonium salt. Can be mentioned.
These may be used alone or in combination of two or more. Among these, cetyltrimethylammonium salt, stearyltrimethylammonium salt, behenyltrimethylammonium salt, and lauryltrimethylammonium salt are preferable from the viewpoint of sustaining the smooth feeling of the skin after towel drying.

As the quaternary ammonium salt containing a long-chain alkyl group of the component (C), an appropriately synthesized one may be used, or a commercially available product may be used.
Commercially available products of the long-chain alkyl group-containing quaternary ammonium salt of the component (C) include, for example, Cotamine 60W (cetyltrimethylammonium chloride), Coatamine 24P (lauryltrimethylammonium chloride), and Coatamine 86P conch (chloride) under the trade names. Stearyltrimethylammonium), Coatamine 86W (stearyltrimethylammonium chloride) (above, manufactured by Kao Co., Ltd.), VARISOFT BT85 PELLETS (behentrimonium chlorideisopropanol, manufactured by Evonik), NIKKOL CA-2450 (stearyltrimethylammonium chloride solution), NIKKOL CA-2330 (Cetyltrimethylammonium chloride aqueous solution), NIKKOL CA-2580 (Behenyltrimethylammonium chloride solution) (above, manufactured by Nikko Chemicals Co., Ltd.), Katinal STC-25W (stearyltrimethylammonium chloride, manufactured by Toho Chemical Industry Co., Ltd.), Cationic AB-250AQ (stearyltrimethylammonium chloride, manufactured by Nichiyu Co., Ltd.), Lipocard C-50 (palmalkyltrimethylammonium chloride) Lipocard T-28 (alkyl chloride ( _C16-18 ) trimethylammonium), Lipocard T -30 (alkyl chloride (C _14-18 ) trimethylammonium), lipocard T-50 (alkyl chloride (C _14-18 ) trimethylammonium), lipocard T-800 (alkyl chloride (C _16-18 ) trimethylammonium) , Lipocard 16-29 (cetyltrimethylammonium chloride), Lipocard 16-50E (cetyltrimethylammonium chloride), Lipocard 18-63 (alkyl chloride (C _16-18 ) trimethylammonium), Lipocard 22-80 (chloride) Behenyltrimethylammonium), Lipocard CB-50 (alkyl chloride ( _C8-18 ) dimethylbenzylammonium) (all manufactured by Lion Specialty Chemicals Co., Ltd.) and the like.

The content of the long-chain alkyl group-containing quaternary ammonium salt of the component (C) is not particularly limited and may be appropriately selected depending on the intended purpose, but the skin is not sticky after towel drying and towel drying. From the viewpoint of sustaining the smoothness of the skin afterwards, 0.001% by mass to 0.05% by mass is preferable, and 0.005% by mass to 0.04% by mass is preferable with respect to the total amount of the liquid skin cleaning agent composition. More preferred. When the content of the component (C) is 0.001% by mass or more, the smoothness of the skin after towel drying is good, and when it is 0.05% by mass or less, the skin is sticky after towel drying. The lack of is good.

<Mass ratio [{(B) + (C)} / (A)]>
Mass ratio of the total content (mass%) of the component (B) and the component (C) to the content (% by mass) of the component (A) [{(B) + (C)} / (A). )] Is 0.005 to 0.08, preferably 0.01 to 0.06, from the viewpoint of the moist feeling of the skin after towel drying and the sustainability of the smooth feeling of the skin after towel drying. When the mass ratio [{(B) + (C)} / (A)] is less than 0.005, the moist feeling of the skin after towel drying and the smooth feeling of the skin after towel drying are not sustained. If it becomes sufficient and exceeds 0.08, the non-stickiness of the skin after towel drying becomes insufficient.

<(D) At least one selected from dimethicone and dimethiconol>
At least one selected from dimethicone and dimethiconol as the component (D) is mainly contained to improve the durability of the smooth feeling of the skin after towel drying.

ただし、前記一般式（Ｄ１）中、ａは構造単位のモル比率（モル％）を示し、３～２０，０００である。 Examples of the dimethicone in the component (D) include those represented by the following general formula (D1).

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

The kinematic viscosity of at least one selected from the components (D) dimethicone and dimethiconol at 25 ° C. is not particularly limited and may be appropriately selected depending on the intended purpose, but the skin feels smooth after towel drying. From the viewpoint of sustainability, 1.5 cSt to 100,000 cSt is preferable, and 2 cSt to 1,000 cSt is more preferable.
The kinematic viscosity can be measured, for example, by the method shown below. In the following measurement method, the kinematic viscosity of dimethicone will be described, but the kinematic viscosity of dimethiconol can also be measured in the same manner.
A toluene solution of dimethicone having a concentration of 1 g / 100 mL is prepared, and the specific viscosity η _sp (25 ° C.) is determined by the following formula (1). Next, the intrinsic viscosity [η] is obtained by substituting into the relational expression of Huggins shown in the following equation (2). As the Huggins constant K', those described in Nakamuta, Nikka, 77, 588, 1956 are used. Next, A. [η] is represented by the following formula (3). The molecular weight M is obtained by substituting it into an equation such as Kolorlov (see Doklady Akad. Nauk. USSR 89 65. 1953). Finally, M is represented by A. J. The kinematic viscosity η of dimethicone can be obtained by substituting it into Barry's equation (see J. Appl. Physics. 17. 1020. 1946).
η _sp = (η / η ₀ ) -1 ・ ・ ・ Equation (1)
η _sp = [η] + K'[η] 2 ・ ・ ・ Equation (2)
[Η] = 2.15 × 10 ^-4 M ^0.65・ ・ ・ Equation (3)
logη = 1.00 + 0.0123M ^0.5 ... Equation (4)
In the formula (1), "η ₀ " indicates the viscosity of toluene, and "η" indicates the viscosity of the solution. The above-mentioned "η ₀ " and the above-mentioned "η" are measured in accordance with the first method of viscosity measurement method, which is a general test method for cosmetic raw materials.

As the component (D), a synthetic product may be used, or a commercially available product may be used.
Commercially available products of the component (D) include, for example, KF-96L series, KF-96A series, KF-6011, KF-615A, KF-945A (all manufactured by Shin-Etsu Chemical Co., Ltd.), TSF451. Series, SILSOFT series, SF3802A (above, manufactured by Momentive), DOWNSIL SH200 series, DOWNSIL BY11-007, DOWNSIL BY11-026, DOWNSIL BY25-320, XIAMTER 1503 Fluid, DOWNSIL SS-2804, DOWNSIL (The above is manufactured by Toray Dow Corning Co., Ltd.).

Further, the component (D) may be a silicone emulsion. Examples of the silicone emulsion include DOWNSIL BY22-066, DOWNSIL BY22-080, DOWNSIL BY22-034, DOWNSIL BY22-050, DOWNIL BY22-060 (all manufactured by Toray Dow Corning) and the like. However, it is not limited to these.

The content of at least one selected from the component (D) dimethicone and dimethiconol is not particularly limited and may be appropriately selected depending on the intended purpose, but the skin feels moist after towel drying and after towel drying. From the viewpoint of sustaining the smoothness of the skin, 0.01% by mass to 0.5% by mass is preferable, and 0.02% by mass to 0.4% by mass is more, based on the total amount of the liquid skin cleaning agent composition. preferable. When the content of the component (D) is 0.01% by mass or more, the moist feeling of the skin after towel drying and the smoothness of the skin after towel drying are maintained well, and are 0.5% by mass. The following is good for the non-stickiness of the skin after towel drying.

<Other ingredients>
The liquid skin cleansing composition of the present invention contains the above-mentioned component (A), the above-mentioned (B) component, the above-mentioned (C) component, and the above-mentioned (D) component as long as the present invention is not impaired. If necessary, an ingredient usually used in a liquid skin cleansing composition or the like can be blended as another ingredient.

The other components are not particularly limited and may be appropriately selected depending on the intended purpose. For example, a surfactant other than the component (A) and the component (C), and a water-soluble component other than the component (B). Sexual polymers, oils, silicones other than the component (D), alcohols, lanolin derivatives, protein derivatives, amino acids, vitamins and other chemicals, bactericides, preservatives, pH adjusters, antioxidants, metal sealants Examples thereof include agents, animal and plant extracts or derivatives thereof, chelating agents, moisturizing agents, thickeners, ultraviolet absorbers or scattering agents, pigments, fragrances, pigments, water-insoluble polymer compound powders and the like.

The oil content is not particularly limited and may be appropriately selected depending on the intended purpose. For example, castor oil, olive oil, cacao oil, hardened palm oil, camellia oil, palm oil, wood wax, jojoba oil, grapeseed oil, etc. Vegetable oils and fats such as avocado oil and their ester compounds; animal oils and fats such as mink oil and egg yolk oil; waxes such as beeswax, whale wax, lanolin, hydrogenated lanolin, carnauba wax, candelilla wax; liquid paraffin, squalane, Hydrocarbons such as microcrystallin wax, ceresin wax, paraffin wax, vaseline; natural and synthetic fatty acids such as oleic acid, isostearic acid, behenic acid; glycerol tri-2-ethylhexanoic acid ester, 2-ethylhexyl stearate, stearic acid Examples thereof include esters such as butyl acid, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyldodecyl oleate, and cholesterol oleate. These may be used alone or in combination of two or more.

The alcohols are not particularly limited and may be appropriately selected depending on the intended purpose, and may be lower alcohols or higher alcohols. Specific examples of the alcohols include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, and lauryl alcohol. These may be used alone or in combination of two or more.

The moisturizing agent is not particularly limited and may be appropriately selected depending on the intended purpose. For example, isoprene glycol, 1,2-pentanediol, diethylene glycol, diethylene glycol monoalkyl ether, polypropylene glycol, polypropylene glycol and cured castor oil. (30EO), diglycerin, triglycerin, polyglycerin and the like can be mentioned. These may be used alone or in combination of two or more.

The thickener is not particularly limited and may be appropriately selected depending on the intended purpose. For example, sodium alginate, xanthan gum, aluminum silicate, malmero seed extract, tragant gum, natural polymers such as starch, methyl cellulose, and the like. Semi-synthetic polymers such as hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, soluble starch, and synthetic polymer compounds such as carboxyvinyl polymer, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, and methacryloylethylbetaine / methacrylate copolymers. Can be mentioned. These may be used alone or in combination of two or more.

The preservative is not particularly limited and may be appropriately selected depending on the intended purpose. For example, benzoate, sorbate, dehydroacetate, paraoxybenzoic acid ester, 2,4,4'-trichloro-. 2'-Hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide, benzalconium chloride, hinokithiol, resorcin, methylchloroisothiazolinone / methylisothiazolinone solution (trade name: Kason CG, Rohm and Haas) -Manufactured by Japan), salicylic acid, pentandiol, phenoxyethanol, ethanol, etc. can be mentioned. These may be used alone or in combination of two or more.

The antioxidant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include dibutylhydroxytoluene, butylhydroxyanisole and ascorbic acid. These may be used alone or in combination of two or more.

The chelating agent is not particularly limited and may be appropriately selected depending on the intended purpose, and examples thereof include edetic acid, disodium edetate, ethylenediaminetetraacetate, hexamethaphosphate and gluconic acid. These may be used alone or in combination of two or more.

The pH adjuster is not particularly limited and may be appropriately selected depending on the intended purpose. For example, sodium hydroxide, potassium hydroxide, citric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanolamine, etc. Phosphoric acid, glycolic acid, hydrochloric acid and the like can be mentioned. These may be used alone or in combination of two or more.

The ultraviolet absorber or scattering agent is not particularly limited and may be appropriately selected depending on the intended purpose. For example, 2-hydroxy-4-methoxybenzophenone, octyldimethylparaaminobenzoate, ethylhexylparamethoxycinnamate, titanium oxide. , Kaolin, talc, etc. These may be used alone or in combination of two or more.

The vitamins are not particularly limited and may be appropriately selected depending on the intended purpose. For example, vitamin A, vitamin B group, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P and vitamins. Examples thereof include U, carnitine, ferulic acid, γ-orizanol, α-lipoic acid, ollotic acid and derivatives thereof. These may be used alone or in combination of two or more.

The amino acids are not particularly limited and may be appropriately selected depending on the intended purpose. For example, glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline and aspartic acid. Examples thereof include acids, glutamic acid, arginine, histidine, lysine and derivatives thereof. These may be used alone or in combination of two or more.

The water-insoluble polymer compound powder is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include inorganic powder, clay mineral, nylon and polyethylene. These may be used alone or in combination of two or more.

As the other components, those synthesized as appropriate may be used, or commercially available products may be used.
The content of the other components with respect to the total amount of the liquid skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose.

-PH-
The pH of the liquid skin cleansing composition at 25 ° C. is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 9.5 to 11.0, preferably 9.8 to 10.6. More preferred.
The pH can be measured using, for example, a glass electrode color hydrogen ion concentration indicator HM-30R (electrode type GST-5721 manufactured by TOA DKK).

-viscosity-
The viscosity of the liquid skin cleansing composition at 25 ° C. is not particularly limited and may be appropriately selected depending on the container to be used and the like, but 4 mPa · s to 40 mPa · s is preferable, and 8 mPa · s to 30 mPa · s is preferable. -S is more preferable.
For example, when using a pump former container capable of discharging foam by pushing down the nozzle portion and one porous membrane body of 305 mesh and one porous membrane of 200 mesh, the liquid skin cleansing composition is used under the temperature conditions used. The viscosity of the product is preferably 30 mPa · s or less, more preferably 25 mPa · s or less.
The viscosity was determined by using, for example, a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at a sample temperature of 25 ° C., a rotation speed of 60 rpm, and No. It can be measured by measuring the viscosity after 1 minute with the rotor of 1.

-container-
The liquid skin cleansing composition of the present invention is not particularly limited, and is used by filling it in a normal container.
The container is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a pump dispenser container, a tube, a former container, and a bag-shaped container. Among these, a former container is preferable.

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

The non-gas type foam discharge container is not particularly limited as long as it can be mixed with air and discharged in a foamed state, and can be appropriately selected depending on the intended purpose, for example. Examples thereof include a squeeze former container that can discharge bubbles by manually squeezing the bottle body, and a pump former container that can discharge bubbles by pushing down the nozzle portion. As such a former container, a container manufactured by Daiwa Seikan Co., Ltd., Yoshino Kogyosho Co., Ltd., or the like can be used. More specifically, as the former container, the former container described in JP-A-7-315463, JP-A-8-230961, and JP-A-2005-193972 can be used.

The non-gas type foam discharge container has a foam forming member, and specifically, has a porous membrane body for forming foam (preferably a plastic material such as nylon, polyester, or polyolefin). , The liquid skin cleaning agent composition passes through the porous membrane body to form bubbles.

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, 100 to 400 mesh is more preferable, and 200 to 305 mesh is particularly preferable.
The number of the porous membranes is not particularly limited and may be appropriately selected depending on the intended purpose, but 2 to 4 are preferable from the viewpoint of improving the foam performance.

-Production method-
The method for producing the liquid skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose. For example, the component (A), the component (B), the component (C), and the component (C). It can be obtained by mixing the component (D), and if necessary, the other components and purified water (blended as the remaining amount so that the entire liquid skin cleansing composition is 100% by mass).
Specifically, the component (A) is dissolved in purified water heated to 70 ° C. to 80 ° C., cooled to 40 ° C. or lower, and then the component (B), the component (C), and the above. It can be produced by adding a silicone emulsion containing the component (D). The silicone emulsion mixes the component (D) while heating it to 70 ° C. Further, the component (C) and purified water are separately heated to 70 ° C. and mixed and dissolved. It can be obtained by adding the mixture containing the component (C) to the mixture containing the component (D) and cooling to 30 ° C.

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 site of use of the liquid skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose. For example, it can be used for the whole body, face, hands and the like.
The method of using the liquid skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose, but it is preferable to fill it in a former container and discharge it into a foam.

The liquid skin cleaning agent composition has excellent foam retention, and has good all of the moist feeling of the skin after towel drying, the non-stickiness of the skin after towel drying, and the sustainability of the smooth feeling of the skin after towel drying. In order to satisfy, for example, it can be used for body shampoo, body soap, face wash foam, hand soap, foam hand soap, cleansing foam, makeup remover and the like, and can be particularly preferably used for body soap.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

The content of each component described in Examples and Comparative Examples is indicated by "mass%", and the total amount is 100% by mass, all of which are values converted to pure content. Further, the mass ratio [(B) + (C) / (A)] to the total content (mass%) of the component (B) and the component (C) with respect to the content (mass%) of the component (A) is , The 4th place after the decimal point was rounded off, and the 3rd place after the decimal point was obtained and described.

(Examples 1 to 33 and Comparative Examples 1 to 11)
The liquid skin cleansing composition having the composition and content shown in Tables 1 to 7 below was prepared according to the following method.
The component (D) or the comparative component of the component (D), the common component polyoxyethylene (POE) (20) cetyl ether, and propylene glycol were mixed while heating at 70 ° C. to obtain a mixture 1. .. Further, the component (C) and purified water were separately mixed and dissolved while being heated to 70 ° C. to obtain a mixture 2. The mixture 2 was added to the mixture 1, mixed with a homomixer, and then cooled to 30 ° C. with stirring to prepare a silicone emulsion.
The amount of purified water to be 45% by mass of the amount required for the finally obtained liquid skin cleansing composition is heated to 70 ° C. to 80 ° C., and the component (A) is added to the solution to dissolve it. After cooling to ° C. or lower, the component (B) and the silicone emulsion were added. After that, if the pH is less than the predetermined pH (pH 10.0), potassium hydroxide, which is a common component, is added, the pH is adjusted to 10.0, and then lauric acid amide propyl betaine and a fragrance are added, and the total amount is 100. Purified water was added so as to be in mass%, and each liquid skin cleansing composition of Examples 1 to 33 and Comparative Examples 1 to 11 was obtained.
When preparing each of the liquid skin cleansing compositions, a propeller was used as a stirring blade, and stirring was performed using a three-one motor (HEIDON BL1200, manufactured by Shinto Kagaku Co., Ltd.). The pH was measured at 25 ° C. using a pH meter (HM-30R, manufactured by TOA DKK).
The obtained liquid skin cleansing compositions of Examples 1 to 33 and Comparative Examples 1 to 11 were filled in a container with a former pump dispenser [discharge amount 3 mL, manufactured by Yoshino Kogyosho Co., Ltd.] and used for the following evaluation. board.

For each of the liquid skin cleansing composition of Examples 1 to 33 and Comparative Examples 1 to 11, "foam retention", "moist feeling of skin after towel drying", and "skin after towel drying" are as follows. "Non-stickiness" and "sustainability of smooth skin after towel drying" were evaluated and judged. The results are shown in Tables 1 to 7 below.

<Foam holding>
Ten expert evaluators took 5 pushes (about 15 g) of each liquid skin cleansing composition of Examples 1 to 33 and Comparative Examples 1 to 11 on the palm, washed the whole body by hand, and observed "foam retention". , Evaluated based on the following evaluation criteria. The results were determined based on the following criteria for determining the average score of the 10 expert evaluators.
-Evaluation criteria for "foam retention"-
4 points: When you finish washing your body, most of the foam that you put on your body at the beginning of washing remains. 3 points: When you finish washing your body, about 80% to 50% of the foam that you put on your body at the beginning of washing remains. 2 points: When you finish washing your body, about 20% to 40% of the foam that you put on your body at the beginning of washing remains. 1 point: When you finish washing your body, most of the foam that you put on your body at the beginning of washing remains. No-Criteria for "holding bubbles"-
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and 3.0 points or less Less than ×: Average score is less than 2.0 points

<Moist feeling of skin after towel drying>
Ten expert evaluators picked up 5 pushes (about 15 g) of each liquid skin cleansing composition of Examples 1-33 and Comparative Examples 1-11, washed the whole body by hand, and then rinsed with warm water at 40 ° C. It was washed and towel-dried. Then, after resting for 30 minutes in a constant temperature room at 38 ° C., "moist feeling of the skin after towel drying" was evaluated based on the following evaluation criteria. The results were determined based on the following criteria for determining the average score of the 10 expert evaluators.
-Evaluation criteria for "moist feeling of skin after towel drying"-
4 points: Feels a strong moist feeling 3 points: Feels a moist feeling 2 points: Feels a little moist feeling 1 point: Does not feel a moist feeling-Criteria for "moist feeling of skin after towel drying"-
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and 3.0 points or less Less than ×: Average score is less than 2.0 points

<No stickiness of the skin after towel drying>
Ten expert evaluators picked up 5 pushes (about 15 g) of each liquid skin cleansing composition of Examples 1-33 and Comparative Examples 1-11, washed the whole body by hand, and then rinsed with warm water at 40 ° C. It was washed and towel-dried. Then, after resting for 30 minutes in a constant temperature room at 38 ° C., "the non-stickiness of the skin after towel drying" was evaluated based on the following evaluation criteria. The results were determined based on the following criteria for determining the average score of the 10 expert evaluators.
-Evaluation criteria for "non-stickiness of skin after towel drying"-
4 points: I don't feel sticky at all 3 points: I feel a little sticky 2 points: I feel quite sticky 1 point: I feel very sticky
-Criteria for "non-sticky skin after towel drying"-
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and 3.0 points or less Less than ×: Average score is less than 2.0 points

<Persistence of smooth skin after towel drying>
Ten expert evaluators picked up 5 pushes (about 15 g) of each liquid skin cleansing composition of Examples 1-33 and Comparative Examples 1-11, washed the whole body by hand, and then rinsed with warm water at 40 ° C. After sinking, towel-drying, and resting in a room at 30 ° C. for 8 hours, "sustainability of skin smoothness after towel-drying" was evaluated based on the following evaluation criteria. The results were determined based on the following criteria for determining the average score of the 10 expert evaluators.
-Evaluation criteria for "sustainability of smooth skin after towel drying"-
4 points: Feels a strong feeling of smoothness 3 points: Feels a feeling of smoothness 2 points: Feels a little smooth feeling 1 point: Does not feel a feeling of smoothness-Criteria for "sustainability of skin smoothness after towel drying"-
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and 3.0 points or less Less than ×: Average score is less than 2.0 points

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

※１：ミリスチン酸カリウムは、ミリスチン酸（ＮＡＡ－１４２、日油株式会社製）を水酸化カリウム（旭硝子株式会社製、液体苛性カリ）で中和させて調製したものを使用した。
※２：ラウリン酸カリウムは、ラウリン酸（ＮＡＡ－１２２、日油株式会社製）を水酸化カリウム（旭硝子株式会社製、液体苛性カリ）で中和させて調製したものを使用した。
※３：塩化ジメチルジアリルアンモニウム・アクリル酸共重合体（マーコート５５０ＰＲ、日本ルーブリゾール株式会社製）は、下記一般式（１）で表される構造を有する高分子化合物であり、下記一般式（１）中のｎが０であり、ｍが３０であり、ｚが７０である。
※４：アクリル酸・塩化ジメチルジアリルアンモニウム・アクリルアミド共重合体（マーコート３３３０ＰＲ、日本ルーブリゾール株式会社製）は、下記一般式（１）で表される構造を有する高分子化合物であり、下記一般式（１）中のｎが３４であり、ｍが３１であり、ｚが３５である。

ただし、前記一般式（１）中、ｎ、ｍ、及びｚは、各構造単位のモル比率（モル％）を示し、ｎ＋ｍ＝１００である。

* 1: Potassium myristic acid used was prepared by neutralizing myristic acid (NAA-142, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
* 2: Potassium laurate used was prepared by neutralizing lauric acid (NAA-122, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
* 3: The dimethyldiallyl ammonium chloride / acrylic acid copolymer (Marcoat 550PR, manufactured by Japan Lubrizol Co., Ltd.) is a polymer compound having a structure represented by the following general formula (1), and is the following general formula (1). ) Is 0, m is 30, and z is 70.
* 4: Acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer (Marcoat 3330PR, manufactured by Japan Lubrizol Co., Ltd.) is a polymer compound having a structure represented by the following general formula (1), and has the following general formula. In (1), n is 34, m is 31, and z is 35.

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

The liquid skin cleansing composition can be suitably used for a former container, has excellent foam retention, a moist feeling of the skin after towel drying, no stickiness of the skin after towel drying, and a skin after towel drying. It can be used for, for example, body shampoo, body soap, face wash foam, hand soap, foam hand soap, cleansing foam, makeup remover, etc., in order to satisfactorily satisfy all of the sustainability of the smooth feeling, and is particularly preferably used for body soap. be able to.

Claims (3)

(A) Anionic surfactant and
(B) At least one cationic polymer selected from the dimethyldiallylammonium chloride polymer and the dimethyldiallylammonium chloride-acrylic acid copolymer, and
(C) A quaternary ammonium salt containing a long-chain alkyl group and
(D) At least one selected from dimethicone and dimethiconol, and
Contains,
The molar ratio of the structural unit derived from dimethyldiallyl ammonium chloride in the dimethyldiallyl ammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more.
The mass ratio [{(B) + (C)} / (A)] of the content of the component (A) to the total content of the component (B) and the component (C) is 0.005 to. A liquid skin cleansing composition comprising 0.08. The content of the component (A) is 10% by mass to 20% by mass.
The content of the component (B) is 0.2% by mass to 0.8% by mass.
The content of the component (C) is 0.005% by mass to 0.04% by mass.
The liquid skin cleansing composition according to claim 1, wherein the content of the component (D) is 0.02% by mass to 0.4% by mass. The liquid skin cleansing composition according to any one of claims 1 to 2, which is filled in a former container.