WO2019097950A1

WO2019097950A1 - Liquid skin cleanser composition

Info

Publication number: WO2019097950A1
Application number: PCT/JP2018/038878
Authority: WO
Inventors: 梨彩子河崎
Original assignee: ライオン株式会社
Priority date: 2017-11-16
Filing date: 2018-10-18
Publication date: 2019-05-23
Also published as: JPWO2019097950A1; KR20200088264A; CN111295179A; JP7204664B2; CN111295179B

Abstract

Provided is a liquid skin cleanser composition which can be filled in a foamer container and contains (A) 2 to 20% by mass of higher fatty acid salts including a lauric acid salt and a myristic acid salt, (B) at least one cationic polymer selected from a dimethyldiallyl ammonium chloride polymer and a (dimethyldiallyl ammonium chloride)-(acrylic acid) copolymer, (C) at least one nonionic surfactant selected from a polyoxyethylene alkyl ether having an average number of moles of added ethylene oxide units of 40 to 120 and a fatty acid monoethanolamide, and (D) a polyhydric alcohol, wherein the molar ratio of a structural unit derived from the dimethyldiallyl ammonium chloride in the (dimethyldiallyl ammonium chloride)-(acrylic acid) copolymer that is the (B)component is 65 mol% or more.

Description

Liquid skin cleanser composition

The present invention relates to liquid skin cleanser compositions.

Heretofore, liquid skin cleanser compositions such as hand soaps and body soaps are required to be excellent in all of foam properties, feel at the time of washing, and properties as products. The properties relating to the foam include, for example, a large amount of foam, elasticity of the foam, good foam resistance and the like. The feeling at the time of washing includes, for example, no squeezing at the time of washing, a refreshing feeling at the end of rinsing, and the like. The property as a product includes, for example, low temperature stability which can prevent precipitation of components of the liquid skin cleanser composition when stored at low temperature. Furthermore, recently, in addition to these, there is a strong demand for the provision of a liquid skin cleansing composition having a moisturizing property high enough to impart moist feeling to the skin after washing.
Heretofore, liquid skin cleanser compositions containing a fatty acid salt and a fatty acid monoethanolamide have been proposed (see, for example, Patent Documents 1 to 3). However, the above-mentioned proposal has a problem that the moisturizing component is washed away at the time of rinsing and does not remain on the skin, so that the moist feeling of the skin after cleaning is poor, and it contains a large amount of fatty acid salt and lacks stability at low temperatures. .

Also, recently, liquid skin cleanser compositions filled in foamers that can be discharged with foam have been used. However, since some of the above proposals contain a thickener, they can not be discharged from the former pump, and there is a problem that the dischargeability is poor.
For this reason, it is desired to provide a skin cleanser composition which is excellent in all of foam-related properties, washing feel and product properties even if it is filled in a former container, and which is also excellent in dischargeability.

JP 2002-317195 A JP, 2011-84484, A JP, 2015-182967, A

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, according to the present invention, the amount of foam, the elasticity of foam, the goodness of foam, the stability at low temperature, and the dischargeability are good, but the squeezing at the time of washing, the end of rinse An object of the present invention is to provide a liquid skin cleanser composition which is excellent in refreshing feeling and moist feeling of the skin after towel drying.

In order to solve the above problems, as a result of intensive investigations by the inventor of the present invention, (A) higher fatty acid salt, (B) cationic polymer, (C) nonionic surfactant, and (D) polyhydric alcohol Due to the synergetic effect of these components, the liquid skin cleanser composition contained contains a large amount of foam, elasticity of foam, good foamability, stability at low temperature, dischargeability, no squeakiness at the time of cleaning It was found that it was excellent in the refreshing feeling at the end of rinsing and the moist feeling of the skin after towel drying.

The present invention is based on the findings by the present inventors, and means for solving the problems are as follows. That is,
<1> (A) 2% by mass to 20% by mass of higher fatty acid salts including laurate and myristate,
(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer,
(C) polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 40 to 120, and at least one nonionic surfactant selected from fatty acid monoethanolamide, and (D) polyhydric alcohol And
The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more.
It is a liquid skin cleanser composition characterized by being filled in a former container.
<2> The liquid skin cleansing composition according to <1>, wherein a mass ratio (A / C) of the (A) higher fatty acid salt to the (C) nonionic surfactant is 2 to 40. .
<3> (E) The liquid skin cleanser composition according to any one of <1> to <2>, further comprising amidopropyl betaine.
<4> The liquid skin cleanser composition according to any one of <1> to <3>, wherein the pH is 9.5 to 11.0.

According to the present invention, the above problems in the prior art can be solved and the above object can be achieved, and the amount of foam, the elasticity of foam, the goodness of foam, the stability at low temperature, and the dischargeability It is possible to provide a liquid skin cleanser composition which is excellent, yet has a fine texture at the time of washing, a refreshing feeling at the end of rinsing, and a moist feeling of the skin after towel drying.

(Liquid skin cleanser composition)
The liquid skin cleanser composition of the present invention comprises (A) a higher fatty acid salt, (B) a cationic polymer, (C) a nonionic surfactant, and (D) a polyhydric alcohol, and (E) It is preferable to contain amidopropyl betaine, and further contain other components as needed.

<(A) Higher fatty acid salt>
The (A) higher fatty acid salt is contained to improve the amount of foam, the elasticity of the foam, and the foam resistance.
The higher fatty acid salt of the component (A) contains laurate and myristate and, if necessary, other higher fatty acid salts such as stearate and palmitate.

Examples of the higher fatty acid counter ion of the higher fatty acid salt of the component (A) include alkali metal ions, ammonium ions, alkanolamines, basic amino acids and the like.
Examples of the alkali metal ion include sodium ion and potassium ion.
Examples of the alkanolamines include monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, 2-amino-2-methylpropanol, 2-amino-2-methylpropanediol and the like.
Examples of the basic amino acid include lysine and arginine.
The higher fatty acid salt of the component (A) is not particularly limited, and may be blended as a higher fatty acid salt, but a higher fatty acid and a salt such as potassium hydroxide, triethanolamine, monoethanolamine, etc. , May be separately added to the mixing tank and neutralized to form a higher fatty acid salt.

What was synthesize | combined suitably may be used as said (A) component, and a commercial item may be used. Examples of the commercially available products include potassium laurate such as Nikkol potassium laurate LK-120 (manufactured by Nikko Chemicals Co., Ltd.) and NAA-122 (manufactured by NOF Corporation), potassium Nikkol myristate MK-140 (Co., Ltd. shares of Nikko Chemicals) K.K.), potassium myristate such as NAA-142 (manufactured by NOF Corporation), potassium palmitate such as NONSAL PK-1 (manufactured by NOF Corporation), and the like. These may be used alone or in combination of two or more.

As the content of the higher fatty acid salt of the component (A), the liquid skin cleanser composition of the present invention from the viewpoint of a large amount of foam, elasticity of foam, good foamability and stability at low temperature. The total amount is 2% by mass to 20% by mass, preferably 5% by mass to 15% by mass. When the content is less than 2% by mass, the amount of foam, elasticity of the foam, and foamability may be insufficient, and when it is more than 20% by mass, low temperature stability In some cases, the gender is insufficient.

The content of the laurate is preferably 1% by mass to 18% by mass, and more preferably 5% by mass to 16% by mass, with respect to the total amount of the liquid skin cleanser composition. The content of the myristic acid salt is preferably 0.5% by mass to 10% by mass, and more preferably 1% by mass to 6% by mass, with respect to the total amount of the liquid skin cleanser composition. When the content of the laurate and the myristate is within the range of the preferable numerical value, the amount of foam, the elasticity of the foam, and the goodness of the foam become good.

The other higher fatty acid salts are not particularly limited as long as they do not inhibit the effects of the present invention, and may be appropriately selected depending on the purpose. Palmitate is preferred.
There is no restriction | limiting in particular as content of the said palmitate salt, Although it can select suitably according to the objective, 2 mass% or less is preferable with respect to the whole quantity of the said higher fatty acid salt from the point of discharge property. 1 mass% or less is more preferable. The lower limit value of the content of the stearate is preferably 0% by mass.

<(B) Cationic Polymer>
The (B) cationic polymer is contained to improve the moist feeling of the skin after towel drying.
The (B) cationic polymer is at least one selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer, and the above-mentioned dimethyldiallylammonium chloride-acrylic acid copolymer The molar ratio of structural units derived from dimethyldiallylammonium chloride is at least 65 mol%.

The dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is represented by the following general formula (1).

However, in the said General formula (1), n and m show the molar ratio with respect to the total structural unit of each structural unit, it is n + m = 100, and said 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) is 65 mol% or more from the viewpoint of moist feeling of the skin after towel drying And 95 mol% or more is preferable. If the molar ratio is less than 65 mol%, the moist feeling of the skin after towel drying may be insufficient.

The molar ratio of the structural unit in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) can be determined by nuclear magnetic resonance (NMR) under the following measurement conditions.
[Measurement condition]
Solvent: Heavy water (D ₂ O)
Measuring instrument: JNM-LA300 (300 MHz, manufactured by Nippon Denshi Co., Ltd.)

There is no restriction | limiting in particular as a weight average molecular weight of the cationic polymer of the said (B) component, Although it can select suitably according to the objective, It is 10,000-1 from the point of the moist feeling of the skin after towel drying. , 000,000 is preferable, and 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: TSK gel α series α-M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3 M aqueous solution) It can be measured by

As a cationic polymer of the said (B) component, what was synthesize | combined suitably may be used, and a commercial item may be used. As said commercial item, the following etc. are mentioned.
Mercot 100 (Component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., solid content 39% by mass to 44% by mass, viscosity at 25 ° C .: 8,000 mPa · s to 12,000 mPa · s, weight average Molecular weight: 150,000). The viscosity is measured at 25 ° C. using a Brookfield Viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured at 3 revolutions per minute using 3 rotors.

Mercot 106 (component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol, viscosity 30% by mass to 36% by mass at 25 ° C .: 20 mPa · s to 65 mPa · s, weight average molecular weight: 15) 000). The viscosity is measured at 25 ° C. using a Brookfield Viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured at a condition of 60 revolutions / minute using one rotor.

Mercot 280 (Component name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., viscosity at 25 ° C .: solid content of 39% by mass to 43% by mass: 3,000 mPa · s to 6,000 mPa · s 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 dimethyldiallylammonium chloride is 65 mol%). The viscosity is measured at 25 ° C. using a Brookfield Viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured at a condition of 60 revolutions / minute using 4 rotors.

Mer coat 295 (component name: dimethyldiallyl ammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., viscosity 35% by mass to 40% by mass at 25 ° C .: 3,500 mPa · s to 9,000 mPa · s) 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 dimethyldiallylammonium chloride is 95 mol%). The viscosity is measured at 25 ° C. using a Brookfield Viscometer LVF (manufactured by Brookfield) at 25 ° C. It can be measured under conditions of 30 revolutions / minute using 4 rotors.

These may be used alone or in combination of two or more. Among these, as the cationic polymer of the component (B), Marcoat 100 and Marcoat 295 are preferable from the viewpoint of moist feeling of the skin after towel drying.

Regarding the content of the cationic polymer of the component (B), the liquid skin cleanser composition of the present invention from the viewpoint of a large amount of foam, no squeakiness at the time of washing, and moist feeling of the skin after towel drying. The total amount is preferably 0.2% by mass to 3% by mass, and more preferably 0.3% by mass to 2% by mass. When the content is 0.2% by mass or more, the moist feeling of the skin after towel drying is good, and when it is 3% by mass or less, the amount of foam is large and the irritability at the time of washing is not Is good.

<(C) nonionic surfactant>
The (C) nonionic surfactant is contained to improve the elasticity of the foam and the goodness of the foam.
The (C) nonionic surfactant is at least one selected from polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 40 to 120, and fatty acid monoethanolamide.

<< Polyoxyethylene Alkyl Ether >>
The average addition mole number (average EO addition mole number) of ethylene oxide (EO) of the polyoxyethylene alkyl ether (hereinafter, also referred to as "POE alkyl ether") is the point of elasticity of foam and goodness of foamability 40 to 120, preferably 50 to 100, and more preferably 70 to 100. When the average EO addition mole number is less than 40 moles and more than 120 moles, the elasticity of the foam and the foamability may be insufficient.
The polyoxyethylene alkyl ether of the component (C) preferably has 10 to 22 carbon atoms in the alkyl group, and more preferably 12 to 18 carbon atoms.

What was synthesize | combined suitably may be used as said polyoxyethylene alkyl ether, and a commercial item may be used. Examples of the commercially available products include Emarex 550 (POE (50) oleyl ether), Emarex 750 (POE (50) lauryl ether) (all manufactured by Nippon Emulsion Co., Ltd.), nonionic K-2100 W (POE (100) Examples include lauryl ether, manufactured by NOF Corporation, and Braunone SR-750 (POE (50) stearyl ether, manufactured by Aoki Yushi Kogyo Co., Ltd.). The numerical value in () after POE represents the average added mole number of ethylene oxide.

<< fatty acid monoethanolamide >>
The carbon number of the fatty acid in the fatty acid monoethanolamide is preferably 8 to 18.

What was synthesize | combined suitably may be used as fatty acid monoethanolamide of the said (C) component, and a commercial item may be used. Examples of the commercially available products include Amizole CME (coconut oil fatty acid monoethanolamide), Amizole SME (stearic acid monoethanolamide) (manufactured by Kawaken Fine Chemical Co., Ltd.), and the like.

These POE alkyl ethers and fatty acid monoethanolamides may be used alone or in combination of two or more.

The content of the nonionic surfactant of the component (C) is 0.1 mass to the total amount of the liquid skin cleanser composition from the viewpoints of the elasticity of the foam, the goodness of the foam and the dischargeability. % To 5% by mass is preferable, and 0.2% to 4% by mass is more preferable. When the content is 0.1% by mass or more, the elasticity of the foam and the foamability are good, and when the content is 5% by mass or less, the dischargeability is good.

[Mass ratio (A / C)]
The mass ratio (A / C) of the higher fatty acid salt of the component (A) to the nonionic surfactant of the component (C) is from the viewpoint of refreshing feeling at the end of rinsing and no squeezing at the time of washing, 2 to 40 is preferable, and 10 to 30 is more preferable. When the mass ratio (A / C) is less than 2, the feeling of refreshing at the end of rinsing may be insufficient, and when it is more than 40, the lack of texture at the time of washing may be insufficient.

<(D) Polyhydric alcohol>
The (D) polyhydric alcohol is contained to improve the dischargeability.
From the viewpoint of dischargeability, propylene glycol, dipropylene glycol, ethylhexyl glycerin, glycerin and 1,3-butylene glycol are preferable as the polyhydric alcohol of the component (D), and propylene glycol, dipropylene glycol and glycerin are preferable. More preferable. These may be used alone or in combination of two or more.

The polyhydric alcohol of the component (D) may be one appropriately synthesized, or a commercially available product may be used. Examples of the commercially available product include: propylene glycol for cosmetic use (propylene glycol, manufactured by Adeka Co., Ltd.), glycerin for cosmetic use 85% (glycerin, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.), 1,3-butylene glycol-P (KH Neochem share) Company-made).

The content of the polyhydric alcohol as the component (D) is 1% by mass based on the total amount of the liquid skin cleanser composition from the viewpoint of the amount of foam, the goodness of the foam and the dischargeability. -20% by mass is preferable, and 5% by mass to 15% by mass is more preferable. When the content is 1% by mass or more, the dischargeability is good, and when it is 20% by mass or less, the amount of foam and the degree of foamability are good.

<(E) amidopropyl betaine>
The amidopropyl betaine of the component (E) is contained to improve the transparency.
Examples of the amidopropyl betaine of the component (E) include lauric amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, myristic amidopropyl betaine and the like. These may be used alone or in combination of two or more. Among these, lauryl amidopropyl betaine and coconut oil fatty acid amidopropyl betaine are preferred from the viewpoint of transparency.

What was synthesize | combined suitably may be used as said (E) component, and a commercial item may be used. Examples of the commercially available products include Enadicol L-30B (lauric acid amidopropyl betaine, manufactured by Lion Specialty Chemicals Co., Ltd.), Nikkol AM-3130N (coconut oil fatty acid amidopropyl betaine, manufactured by Nikko Chemicals Co., Ltd.), and the like.

The content of the amidopropyl betaine of the component (E) is preferably 1% by mass to 15% by mass with respect to the total amount of the liquid skin cleanser composition, from the viewpoint of fineness of foam and transparency. 5% by mass to 10% by mass is more preferable. Transparency is favorable in the said content being 1 mass% or more, and the quality of foaminess is favorable in it being 15 mass% or less.

<Other ingredients>
In the liquid skin cleanser composition of the present invention, in addition to each of the components (A) to (E), other components may be blended as needed in the range not to impair the effects of the present invention. it can.
Examples of the other components include purified water, water-soluble polymers other than the cationic polymer of the component (B), viscosity modifiers, oils, alcohols such as lower alcohols and higher alcohols, lanolin derivatives, protein derivatives, acrylics Resin dispersions, drugs such as vitamins, germicides, preservatives, pH adjusters, antioxidants, sequestering agents, UV absorbers, animal and plant extracts or derivatives thereof, dyes, fragrances, pigments, inorganic powders, clay minerals And water-insoluble polymer powders such as nylon and polyethylene. These may be used alone or in combination of two or more.

<Former container>
The liquid skin cleanser composition of the present invention is filled in a former container.
Examples of the former container 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 cleanser composition and air can be mixed and discharged in a foamed state, and can be appropriately selected according to the purpose. Examples thereof include a squeeze foamer container capable of discharging foam by manually squeezing a bottle barrel, and a pump former container capable of discharging foam by depressing a nozzle portion. As such a former container, for example, manufactured by Yamato Seiso Co., Ltd., manufactured by Yoshino Industry Co., Ltd., etc. can be used.
The non-gas type foam discharge container usually has a porous membrane (preferably made of a plastic material such as nylon, polyester, polyolefin, etc.) for forming foam, and the skin cleanser composition is a porous membrane. A bubble is formed by passing through the body. There is no restriction | limiting in particular as a mesh of the said porous membrane body, Although it can select suitably according to the objective, For example, 100 mesh or more is preferable, 100 mesh-400 mesh are more preferable, 200 mesh-350 mesh More preferable.
The number of the porous membrane is not particularly limited and may be appropriately selected depending on the purpose, but 2 to 4 are preferable from the viewpoint of improving the bubble performance. More specifically, the former containers described in Japanese Patent Application Laid-Open Nos. 7-315 463, 8-23 0961, and 2005-193 972 can be suitably used.

<Manufacturing method>
There is no restriction | limiting in particular as a manufacturing method of the liquid skin cleansing agent composition of this invention, According to the objective, it can select suitably, Said (A)-(E) component and said other components as needed And the purified water (blended with the remaining amount so that the whole liquid skin cleanser composition is 100% by mass) can be obtained by mixing.
Specifically, it can be manufactured as follows. The higher fatty acid salt of the component (A) and the polyhydric alcohol of the component (D) are dissolved in purified water heated to 70 ° C. to 80 ° C., and the solution is cooled to 40 ° C. or less before the above (B) It can be produced by adding the cationic polymer of the component, the nonionic surfactant of the component (C) and, if necessary, the amidopropyl betaine of the component (E).
The liquid skin cleanser composition may be prepared using a device. There is no restriction | limiting in particular as said apparatus, According to the objective, it can select suitably, For example, there exists a shearing force and the stirring apparatus etc. provided with the stirring blade which can mix the whole are mentioned.
There is no restriction | limiting in particular as said stirring blade, According to the objective, it can select suitably, For example, a propeller, a turbine, a disper, etc. are mentioned.

-PH-
The pH of the liquid skin cleanser composition at 25 ° C. is preferably 9.5 to 11.0, and 9.8 to 10, from the viewpoints of foam elasticity, foamability, expulsion ability, and transparency. 6 is more preferable. When the pH is 9.5 or more, the transparency and the dischargeability are good, and when the pH is 11.0 or less, the elasticity of the foam and the good foamability are good.
The pH can be measured, for example, using a pH meter (HM-30R, manufactured by TOA DKK).

-viscosity-
There is no restriction | limiting in particular as a viscosity in 25 degreeC of the said liquid skin cleansing agent composition, Although it can select suitably according to the objective, 4 mPa * s-50 mPa * s are preferable, and 8 mPa * s-20 mPa * s More preferable. If the viscosity is in the above-mentioned preferable range, the elasticity of the foam, the goodness of the foam, and the dischargeability are good.
The viscosity is measured, for example, using a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at a sample temperature of 25 ° C., a sample temperature of 25 ° C., a rotational speed of 60 rpm, It can measure by measuring the viscosity after 1 minute with 1 rotor.

-Applications-
The liquid skin cleanser composition of the present invention is excellent in the amount of foam, the elasticity of the foam, the good foamability, the stability at a low temperature, and the dischargeability, but the irritability at the time of cleaning It is used for example for facial cleansers, hand soaps, body soaps, cleansing foams, makeup removers, etc., and it is particularly suitable for body soaps, because it is excellent in the refreshing feeling at the end of rinsing and the moist feeling of the skin after towel drying. .

Hereinafter, the present invention will be more specifically described based on examples and comparative examples, but the present invention is not limited to the following examples. In addition, content of each component of the description of an Example and a comparative example is the value all converted into a pure part.

(Examples 1 to 33 and Comparative Examples 1 to 12)
Liquid skin cleanser compositions having compositions and contents shown in Tables 1 to 8 below were prepared by a conventional method. Specifically, it was prepared by the following method.
The purified water is heated to 70 ° C. to 80 ° C., and the higher fatty acid salt of component (A) or the comparative component of component (A) and the polyhydric alcohol of component (D) are dissolved and cooled to 40 ° C. or less. The total amount of the liquid skin cleanser composition finally obtained by adding the cationic polymer of component (B) or the comparative component of component (B) and the nonionic surfactant of component (C) or the component of comparison (C). A liquid skin cleanser composition was prepared in an amount of 95% by weight of Then, when it does not reach a predetermined pH, potassium hydroxide which is a common component is added, and after adjusting to a predetermined pH, purified water is added so that the total amount is 100% by mass, and the target liquid skin A cleaning composition was obtained. Further, 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 type, manufactured by TOA DKK).
Each of the liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12 obtained was a container with a former pump dispenser [discharge volume 3 mL, manufactured by Yoshino Kogyo Co., Ltd .; 1) and each liquid skin cleansing composition of Comparative Example 13 is a container with a pump dispenser [discharge volume 3 mL, manufactured by Yoshino Kogyo Co., Ltd., in the table, described as container "2"] It was filled.

Next, with respect to the obtained liquid skin cleanser composition, "large amount of foam", "elasticity of foam", "goodness of foaminess", "no squeezing upon washing" as follows. The evaluation was based on the following conditions: "Sensitivity at the end of rinse", "Moistness of skin after towel drying", "Stability at low temperature", and "Ejectability". The results are shown in the following Tables 1 to 8.

<Large amount of foam, elasticity of foam>
The amount of foam and the elasticity of the foam when 10 expert evaluators take one push (about 3 g) of the liquid skin cleanser composition of Examples 1 to 33 and Comparative Examples 1 to 12 on the palm of the hand The sex was observed and evaluated based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.
-Evaluation criteria for "large amount of bubbles"-
4 points: The amount of foam when one push is taken from the hand is the amount that overflows from the palm Three points: the amount of foam when taken by one push when the hand is as much as the area of the palm 2 points: The amount of bubbles when one push is divided into hands is 80% to 50% of the area of palms 1 point: the amount of bubbles when one push is divided into hands, the area of palms Of less than 50% of-of "the amount of foam amount" criterion-
:: 3.5 or more and 4.0 or less ○: 3.0 or more and less than 3.5 points △: 2.0 or more and less than 3.0 points ×: less than 2.0 points

-Evaluation criteria for "elasticity of foam"-
4 points: feel the thickness 1 cm or more horns 3 points: feel the thickness 0.1 cm to 0.9 cm tins 2 points: feel the thickness but no horns stand 1 point: do not feel thickness-"foam Criteria for "elasticity"
:: 3.5 or more and 4.0 or less ○: 3.0 or more and less than 3.5 points △: 2.0 or more and less than 3.0 points ×: less than 2.0 points

<Good for foamy rice>
When 10 expert evaluators hand-washed the liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12 using a total of 6 push (about 18 g) of foam, the goodness of the foaminess was observed. , Based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation criteria for "Good for foamy"-
5 points: When washing is finished, most of the bubbles attached to the body at the beginning of washing are left 4 points: When washing is finished, 80% to 60% of the bubbles left on body are left 3 points: About half of the bubbles that I put on my body left after washing my body 2 points: About 40% to 20% of the bubbles I put on my body when I finished washing my body One remaining point: After washing the body, almost no foam left on the body at the beginning of washing-"Goodness of foam" criterion-
◎: 4.0 points or more :: 3.5 or more and less than 4.0 points ○: 3.0 or more and less than 3.5 points Δ: 2.0 or more and less than 3.0 points ×: 2.0 points Less than

<Squeakiness at the time of washing>
Ten professional evaluators took one push (about 3 g) of the liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12, and rubbed the inner part of the forearm four times. Evaluation was made based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation Criteria for "Squeakiness at Cleaning"-
4 points: I do not feel any squeaky feeling
3 points: feel a little weird feeling 2 points: feel a very weird feeling 1 point: feel a very weird feeling
-Judgment criteria of "inconspicuousness at washing"-
:: 3.5 or more and 4.0 or less ○: 3.0 or more and less than 3.5 points △: 2.0 or more and less than 3.0 points ×: less than 2.0 points

<A refreshing feeling at the end of rinse>
Ten expert evaluators took 1 push (about 3 g) of the liquid skin cleansing compositions of Examples 1 to 33 and Comparative Examples 1 to 12, rubbed the inner part of the forearm four times, and then heated in 40 ° C. water Immediately after the liquid skin cleanser composition was rinsed off, the "fresh feeling at the end of rinse" was evaluated based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation criteria for "Feeling at the end of rinse"-
4 points: feel quite refreshing 3 points: feel refreshing 2 points: feel a little refreshing 1 point: feel no refreshing
-Judgment criteria for "Feeling at the end of rinse"-
:: 3.5 or more and 4.0 or less ○: 3.0 or more and less than 3.5 points △: 2.0 or more and less than 3.0 points ×: less than 2.0 points

<Moisturizing feeling of skin after towel drying>
The liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12 were hand-washed with a total of 6 push (about 18 g) of foam, and then the liquid skin was heated with 40 ° C. warm water. The cleaning composition was rinsed and wiped off with a towel. At this time, "the moist feeling of the skin after towel drying" was evaluated based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation criteria for "moistness of skin after towel drying"-
5 points: feel strongly moist 4 points: feel moist 3 points: feel moist slightly 2 points: not feel much moist 1 point: feel no moist at all-"Moist skin after towel dry" Criteria for feeling-
:: 4.0 points or more ○: 3.0 points or more and less than 4.0 points :: 2.0 points or more and less than 3.0 points ×: less than 2.0 points

<Low temperature stability>
The liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12 are placed in a cylindrical transparent glass bottle having a diameter of 4 cm and a height of 7.5 cm, and kept for 2 weeks in a thermostat at -5 ° C and -2 ° C. saved. The state of formation of the precipitate at this time (the appearance of the liquid skin cleanser composition) was visually observed by 10 expert evaluators and evaluated based on the following evaluation criteria. The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation criteria for "low temperature stability"-
5 points: no precipitation of crystals or solid is observed within 2 weeks at both -5 ° C and -2 ° C 4 points: no precipitation of crystals or solid is observed at -2 ° C within 2 weeks at -5 ° C Almost no precipitation of crystals or solids in the product (no problem in terms of commercial value)
3 points: almost no precipitation of crystals or solid is observed in 2 weeks at both -5 ° C and -2 ° C (no problem in terms of commercial value)
Two points: both of -5 ° C and -2 ° C show precipitation of a small amount of crystals or solid within 2 weeks 1 point: both of -5 ° C, -2 ° C show precipitation of a large amount of crystals or solid within 2 weeks-" Criteria for stability at low temperatures-
:: 4.0 points or more ○: 3.0 points or more and less than 4.0 points :: 2.0 points or more and less than 3.0 points ×: less than 2.0 points

<Dischargeability>
Based on the following evaluation criteria, the ejection performance was evaluated when 10 expert evaluators pushed the liquid skin cleanser compositions of Examples 1 to 33 and Comparative Examples 1 to 12 with 1 push (about 3 g). The result calculated | required the average score of 10 said expert evaluators, and was determined based on the following determination criteria.

-Evaluation criteria for "Dischargeability"-
5 points: the pump is very easy to push 4 points: the pump is easy to push 3 points: the pump is easy to push 2 points: the pump is hard to push 1 point: the pump is very hard to push-"Dischargeability" criterion-
:: 5.0 points ○: 4.0 or more and less than 5.0 points △: 3.0 or more and less than 4.0 points ×: less than 3.0 points

The “POE” in Tables 1 to 11 is an abbreviation of “polyoxyethylene”.
Also, the numbers of the components (A) to (E) and the components (A) to (C) comparative components to (C) in Tables 1 to 10 represent "% by mass".

In addition, dimethyldiallylammonium chloride-acrylic acid (30:70) copolymer and acrylic acid-dimethyldiallylammonium chloride-acrylamide (34:31:35) copolymer used in the (B) comparative component are the following general compounds: It is a high molecular compound which has a structure represented by Formula (2).

However, in the general formula (2), n, m and z represent molar ratios, and in the dimethyldiallyl ammonium chloride acrylic acid (30:70) copolymer, the n is 0, the m is 30, and the copolymer is z is 70. In the acrylic acid-dimethyldiallyl ammonium chloride-acrylamide (34:31:35) copolymer, the n is 34, the m is 31, and the z is 35.

(Examples 34 to 43)
The purified water is heated to 70 ° C. to 80 ° C., and the higher fatty acid salt of component (A) and the polyhydric alcohol of component (D) are dissolved and cooled to 40 ° C. or less, the cation of component (B) Of the total amount of the liquid skin cleanser composition finally obtained by adding the hydrophobic polymer, the nonionic surfactant of the component (C), and the amidopropyl betaine of the component (E) to a total amount of 95% by mass A skin cleanser composition was prepared. Then, when it does not reach a predetermined pH, potassium hydroxide which is a common component is added, and after adjusting to a predetermined pH, purified water is added so that the total amount is 100% by mass, and the target liquid skin A cleaning composition was obtained. Further, 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 type, manufactured by TOA DKK).
In addition, each liquid skin cleanser composition of Examples 34 to 43 obtained was filled in a container with a former pump dispenser [discharge volume 3 mL, nozzle diameter (inner diameter) 3.5 mm, manufactured by Yoshino Kogyo Co., Ltd.] .

Next, in the same manner as in Example 1, "large amount of foam", "elasticity of foam", "goodness of foam and hold", "no squeezing at the time of washing", "fresh feeling at the end of rinsing" “The moist feeling of the skin after towel drying”, “low temperature stability”, and “dischargeability” were evaluated. The "transparency" was evaluated as follows. The results are shown in Tables 9 to 10 below.

Transparency
Each liquid skin cleanser composition of Examples 34 to 43 is put up to the mouth of the glass bottle in a cylindrical transparent glass bottle having a diameter of 4 cm and a height of 7.5 cm, and the pocket size near vision card 40 cm (Inc. TIM) were placed, the marks on the card were observed, and "transparency" was evaluated based on the following evaluation criteria. The result calculated | required the average score of 10 expert evaluators, and was judged based on the following judgment criteria. In addition, if an average evaluation point is 4.0 points or more, "transparency" is favorable.

-Evaluation criteria for "transparency"-
5 points: Transparent, mark clearly visible 4 points: slightly cloudy, but mark visible 3 points: slightly cloudy, mark difficult to confirm 2 points: cloudy, mark hardly visible 1 point: Cloudy, no marks can be confirmed at all-Judgment criteria for "transparency"-
◎: 5.0 points :: 4.0 or more and less than 5.0 points ○: 3.5 or more and less than 4.0 points △: 3.0 or more and less than 3.5 points ×: less than 3.0 points

Raw materials used in the above-mentioned Examples and Comparative Examples are as shown in Table 11 below.

The liquid skin cleanser composition of the present invention is excellent in the amount of foam, the elasticity of the foam, the good foamability, the stability at a low temperature, and the dischargeability, but the irritability at the time of cleaning Because it is excellent in moisturizing feeling at the end of rinsing and after towel drying, it is suitably used for, for example, face wash, hand soap, body soap, cleansing foam, makeup remover, etc., particularly for body soap Used.

Claims

(A) 2% by mass to 20% by mass of higher fatty acid salts including laurate and myristate,
(B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer,
(C) polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 40 to 120, and at least one nonionic surfactant selected from fatty acid monoethanolamide, and (D) polyhydric alcohol And
The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more.
A liquid skin cleanser composition characterized by being filled in a former container.
The liquid skin cleanser composition according to claim 1, wherein a mass ratio (A / C) of the (A) higher fatty acid salt to the (C) nonionic surfactant is 2 to 40.
The liquid skin cleanser composition according to any one of claims 1 to 2, further comprising (E) amidopropyl betaine.
The liquid skin cleanser composition according to any one of claims 1 to 3, which has a pH of 9.5 to 11.0.