CN111295179B

CN111295179B - Liquid skin cleanser composition

Info

Publication number: CN111295179B
Application number: CN201880070941.9A
Authority: CN
Inventors: 河崎梨彩子
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2017-11-16
Filing date: 2018-10-18
Publication date: 2023-09-26
Anticipated expiration: 2038-10-18
Also published as: CN111295179A; JP7204664B2; KR20200088264A; WO2019097950A1; JPWO2019097950A1

Abstract

There is provided a liquid skin cleansing composition filled in a foaming container, comprising: (a) 2 to 20% by mass of a higher fatty acid salt containing lauric acid salt and myristic acid salt, (B) at least one cationic polymer selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, (C) at least one nonionic surfactant selected from a polyoxyethylene alkyl ether having an average number of moles of ethylene oxide added of 40 to 120 and fatty acid monoethanolamide, and (D) a polyhydric alcohol, wherein the molar ratio of the constituent units derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more.

Description

Liquid skin cleanser composition

Technical Field

The present invention relates to liquid skin cleanser compositions.

Background

Conventionally, liquid skin cleansing compositions such as hand sanitizers and body washes are required to have excellent foam-related properties, touch feeling during cleansing, and product properties. The above-mentioned foam-related properties are, for example, the extent to which the amount of foam is large, the elasticity of foam, the degree of good foamability, and the like. The touch feeling at the time of cleaning is exemplified by, for example, no squeak at the time of cleaning, a refreshing feeling at the end of washing, and the like. The nature of the product is, for example, low-temperature stability which can prevent precipitation of components of the liquid skin cleansing composition at the time of low-temperature storage. Further, recently, it has been strongly desired to provide a liquid skin cleansing composition which has the above properties and also has high moisturizing properties which can impart a moist feel to the skin after cleansing.

Heretofore, a liquid skin cleansing composition containing a fatty acid salt and fatty acid monoethanolamide has been proposed (for example, see patent documents 1 to 3). However, the above-described scheme has such problems that: since the moisturizing component is rinsed off during washing and does not remain on the skin, the skin is poor in moisturization after cleansing, and the low-temperature stability is poor due to the large amount of fatty acid salt contained.

Further, recently, liquid skin cleanser compositions filled into foaming containers which can be discharged as foam have been used. However, the above-described scheme has such problems that: the thickener is contained and therefore cannot be discharged from the foaming pump, and the discharge property is poor.

Thus, it is desirable to provide: even when filled into a foaming container, the skin cleansing composition is excellent in foam-related properties, touch feeling upon cleansing and product properties, and is excellent in drainage.

[ Prior Art literature ]

[ patent literature ]

Japanese patent application laid-open No. 2002-317195

Japanese patent application laid-open No. 2011-84484 (patent document 2)

Japanese patent application laid-open No. 2015-182967

Disclosure of Invention

[ problem ] to be solved by the invention

The present invention aims to solve the above problems and achieve the following objects. That is, the present invention has an object to provide a liquid skin cleansing composition which is excellent in the degree of foaming, the elasticity of foam, the good degree of foamability, low-temperature stability and drainage, and is free from squeak feeling during cleansing, refreshing feeling at the end of washing and moist feeling of the skin after wiping with a towel.

[ means for solving the problems ]

The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that a liquid skin cleansing composition containing (a) a higher fatty acid salt, (B) a cationic polymer, (C) a nonionic surfactant and (D) a polyhydric alcohol is excellent in the degree of foaming, the elasticity of the foam, the degree of foamability, the low-temperature stability, the drainage, the no squeak feeling at the time of cleansing, the refreshing feeling at the time of the end of cleansing and the moist feeling of the skin after wiping with a towel, because of the synergistic effect of these respective components.

The present invention is based on the knowledge of the present inventors, and means for solving the above problems are as follows. That is to say,

<1> a liquid skin cleansing composition comprising:

(A) A higher fatty acid salt comprising lauric acid salt and myristic acid salt, wherein the content of the higher fatty acid salt is 2 to 20 mass%, and,

(B) At least one cationic polymer selected from the group consisting of dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer,

(C) At least one nonionic surfactant selected from polyoxyethylene alkyl ether and fatty acid monoethanolamide having an average addition mole number of 40-120 of ethylene oxide, and

(D) A polyhydric alcohol is used in the preparation of a polyol,

the molar ratio of the constituent unit derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more,

the composition is filled in a foaming container.

<2> the liquid skin cleansing composition according to the above <1>, wherein the mass ratio (A/C) of the (A) higher fatty acid salt to the (C) nonionic surfactant is 2 to 40.

<3> the liquid skin cleansing composition according to any one of the above <1> to <2>, wherein the composition further comprises (E) an amidopropyl betaine.

<4> the liquid skin cleansing composition according to any one of the above <1> to <3>, wherein the pH of the liquid skin cleansing composition is 9.5 to 11.0.

[ Effect of the invention ]

The present invention solves the above problems and achieves the above objects by providing a liquid skin cleansing composition which has a high foam content, good foam elasticity and foamability, good low-temperature stability and drainage, and is free from squeak feeling during cleansing, refreshing feeling at the end of cleansing and excellent in moist feeling of the skin after wiping with a towel.

Detailed Description

(liquid skin cleanser composition)

The liquid skin cleansing composition of the present invention contains (a) a higher fatty acid salt, (B) a cationic polymer, (C) a nonionic surfactant, and (D) a polyhydric alcohol, preferably (E) an amidopropyl betaine, and further contains other components as necessary.

(A) higher fatty acid salt

In order to improve the degree of foaming, the elasticity of the foam and the good degree of foamability, the above (A) higher fatty acid salt is contained.

The higher fatty acid salt of the component (a) contains lauric acid salt and myristic acid salt, and further contains other higher fatty acid salts such as stearate and palmitate as necessary.

Examples of the 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 alkanolamine include monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, 2-amino-2-methylpropanol, and 2-amino-2-methylpropanediol.

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 mixed as a higher fatty acid salt, or may be prepared by adding a higher fatty acid to a salt such as potassium hydroxide, triethanolamine, monoethanolamine, etc. in a mixing tank, and performing a neutralization reaction.

The component (A) may be appropriately synthesized or commercially available ones may be used. Examples of the commercial products include: potassium laurate such as NIKKKOL potassium LK-120 (manufactured by Nikkol Corp., ltd.), potassium laurate such as NAA-122 (manufactured by Nikkol Corp., ltd.), potassium myristate such as NIKOL potassium myristate MK-140 (manufactured by Nikkol Corp., NAA-142 (manufactured by Nikkol Corp., ltd.), and potassium palmitate such as NONSOUL PK-1 (manufactured by Nikkol Corp., ltd.). The number of these may be 1 alone or 2 or more.

The content of the higher fatty acid salt of the component (a) is 2 to 20% by mass, preferably 5 to 15% by mass, relative to the total amount of the liquid skin cleansing composition, from the viewpoints of a high foam content, elasticity of foam, good foamability, and low-temperature stability. When the content is less than 2% by mass, the foam amount may be large, and the foam elasticity and foamability may be poor, and when the content is more than 20% by mass, the low-temperature stability may be poor.

The content of the laurate is preferably 1 to 18% by mass, more preferably 5 to 16% by mass, relative to the total amount of the liquid skin cleansing composition. The content of the myristate is preferably 0.5 to 10% by mass, more preferably 1 to 6% by mass, relative to the total amount of the liquid skin cleansing composition. When the contents of the lauric acid salt and the myristic acid salt are within the above preferred numerical ranges, the degree of foaming is high, and the degree of elasticity and foamability of the foam is good.

The other higher fatty acid salts are not particularly limited as long as the effects of the present invention are not impaired, and may be appropriately selected according to the purpose, and palmitate is preferred.

The content of the palmitate is not particularly limited, and may be appropriately selected according to the purpose, but from the viewpoint of the drainage, it is preferably 2% by mass or less, more preferably 1% by mass or less, relative to the total amount of the higher fatty acid salt. The lower limit of the content of the stearate is preferably 0 mass%.

Cationic Polymer (B)

The cationic polymer (B) is contained in order to improve the moist feeling of the skin after the towel drying.

The cationic polymer (B) is at least one selected from the group consisting of a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer, and the molar ratio of the constituent units derived from the dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer is 65 mol% or more.

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

In the general formula (1), n and m represent the molar ratio of each structural unit to the total structural units, n+m=100, and m is 65 or more.

The molar ratio of the constituent unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) is 65 mol% or more, preferably 95 mol% or more, in view of the moist feeling of the skin after towel drying. When the molar ratio is less than 65 mol%, the wet feeling of the skin may be insufficient after the towel is dried.

The molar ratio of the structural units in the dimethyldiallylammonium chloride-acrylic acid copolymer in the above-mentioned component (B) can be determined by measurement under the following measurement conditions by Nuclear Magnetic Resonance (NMR).

[ measurement conditions ]

Solvent: heavy water (D) ₂ O)

A measuring device: JNM-LA300 (300 MHz, manufactured by Japanese electronics Co., ltd.)

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

For example, the weight average molecular weight of the cationic polymer of the component (B) can be measured by a SEC-MALLS-RI system (measurement conditions: chromatography column: TSKgel. Alpha. Series. Alpha. -M chromatography column manufactured by Tosoh Co., ltd., solvent: sodium nitrate 0.3M aqueous solution).

The cationic polymer as the component (B) may be a properly synthesized cationic polymer or a commercially available product. The commercial products mentioned above include the following commercial products.

Merquat 100 (component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Libo Co., ltd., viscosity at 25 ℃ C., solid content 39 to 44% by mass: 8,000 mPa.s to 12,000 mPa.s, weight average molecular weight: 150,000). The viscosity can be measured using a Brookfield viscometer LVF (manufactured by Brookfield Co.) at 25℃using a rotor model (spindle) No. 3 rotor at 6 revolutions per minute.

Merquat 106 (component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Libo Co., ltd., viscosity at 25 ℃ C., weight average molecular weight: 15,000) of 30 to 36% by mass of solid content. The viscosity can be measured using a Brookfield viscometer LVF (manufactured by Brookfield Co.) at 25℃using a rotor model No. 1 rotor at 60 revolutions per minute.

Merquat 280 (component name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Libo Co., ltd., viscosity at 25 ℃ of 39 to 43% by mass of solid content: 3,000 mPas to 6,000 mPas, weight average molecular weight: 450,000, n: m=35:65 (molar ratio) in the above general formula (1), molar ratio of the structural unit derived from dimethyldiallylammonium chloride: 65 mol%). The viscosity can be measured using a Brookfield viscometer LVF (manufactured by Brookfield Co.) at 25℃using a rotor model number 4 rotor at 60 revolutions per minute.

Merquat 295 (component name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Libo Co., ltd., viscosity at 25 ℃ C., weight average molecular weight: 190,000, 35 to 40 mass% of solid content: 3,500 mPas to 9,000 mPas, n: m=5:95 (molar ratio) in the above general formula (1), the molar ratio of the structural unit derived from dimethyldiallylammonium chloride: 95 mol%). The viscosity can be measured using a Brookfield viscometer LVF (manufactured by Brookfield Co.) at 25℃using a rotor model No. 4 rotor at 30 revolutions per minute.

The number of these may be 1 alone or 2 or more. Among them, the cationic polymers of the above component (B) are preferably Merquat 100 and Merquat 295 from the viewpoint of the moist feeling of the skin after the skin is wiped with a towel.

The content of the cationic polymer of the component (B) is preferably 0.2 to 3% by mass, more preferably 0.3 to 2% by mass, relative to the total amount of the liquid skin cleansing composition, in view of the high foam level, no squeak feeling during cleansing and moist feeling of the skin after towel drying. When the content is 0.2 mass% or more, the wet feeling of the skin after the towel is dried is good, and when the content is 3 mass% or less, the foam amount is large and the cleaning feeling is good.

(C) nonionic surfactant ]

The nonionic surfactant (C) is contained in order to improve the elasticity and foamability of the foam.

The nonionic surfactant (C) is at least one selected from polyoxyethylene alkyl ethers and fatty acid monoethanolamides, wherein the average addition mole number of ethylene oxide is 40-120.

Polyoxyethylene alkyl ether ]

The average molar number of addition (average molar number of addition of EO) of Ethylene Oxide (EO) of the polyoxyethylene alkyl ether (hereinafter also referred to as "POE alkyl ether") is 40 to 120, preferably 50 to 100, more preferably 70 to 100, from the viewpoint of the elasticity and the foaming property of the foam to a good degree. When the average EO addition mole number is less than 40 moles and more than 120 moles, the foam may have insufficient elasticity and foaming property.

The number of carbon atoms of the alkyl group of the polyoxyethylene alkyl ether of the component (C) is preferably 10 to 22, more preferably 12 to 18.

The polyoxyethylene alkyl ether may be appropriately synthesized or commercially available. Examples of the commercial products include: EMALEX 550 (POE (50) oleyl ether), EMALEX 750 (POE (50) lauryl ether) (manufactured above by japan Emulsion corporation), nonion K-2100W (POE (100) lauryl ether manufactured by daily oil corporation), blanon SR-750 (POE (50) stearyl ether manufactured by green wood oil industry corporation), and the like. In addition, the values in ()'s after POE represent the average addition mole number of ethylene oxide.

Fatty acid monoethanolamide-

The fatty acid in the fatty acid monoethanolamide preferably has 8 to 18 carbon atoms.

The fatty acid monoethanolamide as the component (C) may be appropriately synthesized or commercially available ones may be used. Examples of the commercial products include AMISOL CME (coco fatty acid monoethanolamide) and AMISOL SME (stearic acid monoethanolamide) (manufactured by Chuanmin chemical Co., ltd.).

These POE alkyl ethers and fatty acid monoethanolamides may be used alone or in combination of 1 or 2 or more.

The content of the nonionic surfactant of the component (C) is preferably 0.1 to 5% by mass, more preferably 0.2 to 4% by mass, relative to the total amount of the liquid skin cleansing composition, from the viewpoints of elasticity of foam, good foamability, and drainage. When the content is 0.1 mass% or more, the foam elasticity and the degree of foaming are good, and when the content is 5 mass% or less, the drainage 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 preferably 2 to 40, more preferably 10 to 30, from the viewpoints of a refreshing feel at the end of washing and no squeak at the time of cleaning. When the mass ratio (a/C) is less than 2, there may be a case where the refreshing feeling at the end of washing is insufficient, and when the mass ratio is more than 40, there may be a case where the cleaning is not sufficient.

Polyol (D)

The above polyol (D) is contained in order to improve the drainage.

From the viewpoint of the releasability, the polyhydric alcohol as the component (D) is preferably propylene glycol, dipropylene glycol, ethylhexyl glycerol, and 1, 3-butanediol, more preferably propylene glycol, dipropylene glycol, and glycerol. The number of these may be 1 alone or 2 or more.

The polyol of the component (D) may be appropriately synthesized or commercially available ones may be used. Examples of the commercial products include propylene glycol (propylene glycol, manufactured by ADEKA corporation), glycerin 85% (glycerin, manufactured by sakagu pharmaceutical industries, ltd.), and 1, 3-butanediol-P (manufactured by KH Neochem corporation).

The content of the polyol in the component (D) is preferably 1 to 20% by mass, more preferably 5 to 15% by mass, relative to the total amount of the liquid skin cleansing composition, from the viewpoints of the degree of foaming, the degree of foamability, and the discharge property. When the content is 1 mass% or more, the drainage is good, and when the content is 20 mass% or less, the degree of foaming is large and the degree of foamability is good.

(E) amidopropyl betaine

In order to improve transparency, the above-mentioned component (E) is contained in the amidopropyl betaine.

Examples of the amidopropyl betaine as the component (E) include lauric acid amidopropyl betaine, cocofatty acid amidopropyl betaine, myristic acid amidopropyl betaine, and the like. The number of these may be 1 alone or 2 or more. From the viewpoint of transparency, lauric acid amidopropyl betaine and cocofatty acid amidopropyl betaine are preferable.

The component (E) may be appropriately synthesized or commercially available ones may be used. Examples of the commercial products include: enagicol L-30B (lauramidopropyl betaine, manufactured by lion Wang Teshu chemical Co., ltd.), NIKKKOOL AM-3130N (coco fatty acid amidopropyl betaine, manufactured by solar chemical Co., ltd.), and the like.

The content of the amidopropyl betaine in the component (E) is preferably 1 to 15% by mass, more preferably 5 to 10% by mass, relative to the total amount of the liquid skin cleansing composition, from the viewpoints of the good foamability and transparency. When the content is 1 mass% or more, the transparency is good, and when the content is 15 mass% or less, the foamability is good.

< other ingredients >

In addition to the components (a) to (E), other components may be mixed with the liquid skin cleansing composition of the present invention as necessary within a range that does not impair the effects of the present invention.

Examples of the other components include: purified water, water-soluble polymers other than the cationic polymers of the above component (B), viscosity modifiers, oils, alcohols such as lower alcohols and higher alcohols, lanolin derivatives, protein derivatives, acrylic resin dispersions, vitamins and other drugs, bactericides, preservatives, pH modifiers, antioxidants, metal chelators, ultraviolet absorbers, animal and plant extracts or derivatives thereof, pigments, perfumes, pigments, inorganic powders, clay minerals, nylons, polyethylene and other water-insoluble polymer powders, and the like. The number of these may be 1 alone or 2 or more.

< foaming Container >

The liquid skin cleanser composition of the invention is filled into a foaming container.

Examples of the foaming container include a non-gaseous foam discharge container. The non-gaseous foam discharging container is not particularly limited as long as it can mix the liquid skin cleansing composition and air and discharge the composition in a foaming state, and may be appropriately selected according to the purpose, and examples thereof include: a squeeze foamer container which can discharge foam by pressing a bottle body by hand, a pump foamer container which can discharge foam by pressing a nozzle part, and the like. Examples of such a foaming container include those manufactured by Daikovia Kagaku Kogyo, and those manufactured by Jiye industries of Kagaku Kogyo.

In general, the non-gaseous foam discharge container has a porous film (preferably a plastic material such as nylon, polyester, or polyolefin) for forming foam, and the skin cleansing composition is passed through the porous film to form foam. The number of the porous membrane is not particularly limited and may be appropriately selected according to the purpose, but is, for example, preferably 100 mesh or more, more preferably 100 mesh to 400 mesh, and still more preferably 200 mesh to 350 mesh.

The number of the porous films is not particularly limited, and may be appropriately selected according to the purpose, but from the viewpoint of improving the foam performance, 2 to 4 sheets are preferable. More specifically, the foaming containers described in JP-A-7-315463, JP-A-8-230961 and JP-A-2005-193972 can be suitably used.

< manufacturing method >

The method for producing the liquid skin cleansing composition of the present invention is not particularly limited, and may be appropriately selected according to the purpose, and the components (a) to (E) may be mixed, and if necessary, the other components and the purified water may be mixed (the mixing balance is such that the total liquid skin cleansing composition is 100 mass%).

Specifically, the production can be performed as follows. The aqueous dispersion is produced by dissolving the higher fatty acid salt of the component (A) and the polyol of the component (D) in purified water heated to 70 to 80 ℃, cooling to 40 ℃ or lower, and then adding the cationic polymer of the component (B), the nonionic surfactant of the component (C) and, if necessary, the amidopropyl betaine of the component (E).

The liquid skin cleanser composition described above can be manufactured using a device. The apparatus is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include a stirring apparatus having stirring blades which have a shearing force and are capable of mixing the whole.

The stirring blade is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include: propellers, turbines, dispersers, etc.

-pH-

The pH of the liquid skin cleansing composition at 25 ℃ is preferably 9.5 to 11.0, more preferably 9.8 to 10.6, from the viewpoints of elasticity of foam, good foamability, drainage and transparency. When the pH is 9.5 or more, transparency and drainage are good, and when the pH is 11.0 or less, the foam elasticity and foamability are good.

The pH can be measured, for example, using a pH meter (model HM-30R, manufactured by TOA DKK Co.).

Viscosity-

The viscosity of the liquid skin cleansing composition at 25 ℃ is not particularly limited, and may be appropriately selected according to the purpose, and is preferably 4 to 50mpa·s, more preferably 8 to 20mpa·s. When the viscosity is within the above preferred range, the foam is excellent in elasticity, foaming property, and drainage.

For example, the viscosity can be measured by measuring the viscosity after 1 minute using a BM viscometer (manufactured by Tokyo counter, co., ltd.) at a sample temperature of 25℃and a sample temperature of 25℃under the condition of a rotation speed of 60rpm and a rotor No. 1.

Use(s)

The liquid skin cleansing composition of the present invention has a high foam content, good foam elasticity and foamability, and good low-temperature stability and drainage, and is free from squeak feeling during cleansing, and excellent in refreshing feeling at the end of washing and moist feeling of skin after wiping with a towel, and therefore, is useful for, for example, a cleansing product, a hand cleanser, a body wash, a cleansing foam, a cleansing liquid, and the like, and is particularly suitable for a body wash.

[ example ]

The present invention will be described in further detail based on examples and comparative examples, but the present invention is not limited to the examples. The content of each component described in examples and comparative examples was a value obtained by conversion of purity.

Examples 1 to 33 and comparative examples 1 to 12

Liquid skin cleansing compositions having the compositions and contents shown in the following tables 1 to 8 were produced by a usual method. Specifically, the method was used for manufacturing.

Heating purified water to 70-80 ℃, dissolving higher fatty acid salt of component (A) or a comparative component (A) with polyol of component (D), cooling to 40 ℃ or below, and then adding cationic polymer of component (B) or a nonionic surfactant of component (B) with component (C) or a comparative component (C), thereby producing a liquid skin cleansing composition in an amount of 95% by mass of the total amount of the finally obtained liquid skin cleansing composition. Then, when the pH does not satisfy the predetermined pH, potassium hydroxide as a common component is added, the pH is adjusted to the predetermined pH, and then purified water is added so that the total amount becomes 100 mass%, to obtain the target liquid skin cleansing composition. Further, a propeller was used as a stirring blade, and a Three-in-one stirrer (HEIDON BL1200, manufactured by new eastern chemical corporation) was used for stirring. In addition, pH was measured at 25℃using a pH meter (model HM-30R, manufactured by TOADKK Co.).

The obtained liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 were filled into a container with a foaming pump dispenser [ 3mL discharge amount, manufactured by Giku Kogyo Co., ltd., and described as container "1" in the table), and the liquid skin cleansing composition of comparative example 13 was filled into a container with a pump dispenser [ 3mL discharge amount, manufactured by Giku Kogyo Co., ltd., and described as container "2" in the table).

Next, the obtained recorded liquid skin cleansing composition was evaluated for "extent of foaming", "elasticity of foam", "good degree of foamability", "no squeak at cleaning", "fresh feeling at the end of washing", "moist feeling of skin after towel drying", "low temperature stability" and "drainage" as follows. The results are shown in tables 1 to 8 below.

< degree of foam amount, elasticity of foam >

10 panelists observed the degree of foaming and the elasticity of the foam when the liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 were pressed once (about 3 g) into the palm, and evaluated according to the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion for "extent of foam increase

4, the following steps: the amount of foam when pressed once into the hand is the amount of overflow from the palm

3, the method comprises the following steps: the amount of foam when pressed into the hand once is the same as the palm area

2, the method comprises the following steps: the amount of foam is 80% -50% of the palm area when pressed into the hand once

1, the method comprises the following steps: the amount of foam when pressed once into the hand is an amount less than 50% of the palm area

Determination criterion for "extent of foam increase

And (3) the following materials: 3.5 to 4.0 minutes

O: 3.0 minutes or more and less than 3.5 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

Evaluation criteria for "elasticity of foam

4, the following steps: the thickness is perceived, and the angle of more than 1cm is raised

3, the method comprises the following steps: the thickness is perceived, and the angle of 0.1cm to 0.9cm is raised

2, the method comprises the following steps: feel thickness but no standing angle

1, the method comprises the following steps: no thickness is felt

Determination criterion for the elasticity of foam

And (3) the following materials: 3.5 to 4.0 minutes

O: 3.0 minutes or more and less than 3.5 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

< degree of foamability >

10 panelists used foams of the liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 pressed 6 times (about 18 g), and observed the degree of foaming at the time of washing hands, and evaluated based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion for "good foamability

5, the method comprises the following steps: at the end of body cleaning, foam attached to the body at the beginning of body cleaning remains almost

4, the following steps: at the end of body cleaning, about 80 to 60 percent of foam attached to the body at the beginning of body cleaning remains

3, the method comprises the following steps: at the end of body cleaning, about half of the foam attached to the body remains at the beginning of body cleaning

2, the method comprises the following steps: at the end of body cleaning, about 40 to 20 percent of foam attached to the body at the beginning of body cleaning remains

1, the method comprises the following steps: at the end of body cleaning, almost no bubbles attached to the body remain at the beginning of body cleaning

Determination criterion for "good foamability

Very good: 4.0 minutes or more

And (3) the following materials: 3.5 min or more and less than 4.0 min

O: 3.0 min or more and less than 3.5 min

Delta: more than 2.0 min and less than 3.0 min

X: less than 2.0 minutes

< no squeak at cleaning >

When 10 panelists pressed once (about 3 g) the liquid skin cleanser compositions of examples 1 to 33 and comparative examples 1 to 12, rubbed the inner side of the forearm 4 times, no squeak was observed during cleaning based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion for "no creak during cleaning

4, the following steps: no sense of creak

3, the method comprises the following steps: slightly feel a crunchy feel

2, the method comprises the following steps: feel a considerable sense of squeak

1, the method comprises the following steps: very much feel of crunchy

"clean without squeak" criterion

And (3) the following materials: 3.5 to 4.0 minutes

O: 3.0 minutes or more and less than 3.5 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

< fresh feel at the end of washing >

10 panelists pressed the liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 once (about 3 g), rubbed the inner side of the forearm 4 times, then used warm water at 40℃and immediately after washing off the liquid skin cleansing composition, evaluated "refreshing feeling at the end of washing" based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion for "refreshing feel at the end of washing

4, the following steps: feel a refreshing feeling

3, the method comprises the following steps: feel fresh and cool

2, the method comprises the following steps: slightly feel refreshing

1, the method comprises the following steps: no feeling of freshness

Judging criterion for "refreshing feel at the end of washing

And (3) the following materials: 3.5 to 4.0 minutes

O: 3.0 minutes or more and less than 3.5 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

< moist feel of skin after towel drying >

After 10 panelists washed hands with the foam of the liquid skin cleansing composition of examples 1 to 33 and comparative examples 1 to 12 pressed 6 times (about 18 g), the liquid skin cleansing composition was washed with warm water at 40℃and water droplets were wiped with a towel. The "wet feel of skin after towel drying" at this time was evaluated based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion of "moist feel of skin after towel drying

5, the method comprises the following steps: strongly feel moist feeling

4, the following steps: feel moist feeling

3, the method comprises the following steps: slightly feel moist

2, the method comprises the following steps: less feeling of wetness

1, the method comprises the following steps: no moist feeling is felt at all

Determination criterion for "moist feel of skin after towel drying

And (3) the following materials: 4.0 minutes or more

O: 3.0 minutes or more and less than 4.0 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

< Low temperature stability >

The liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 were put into a cylindrical transparent glass bottle having a diameter of 4cm and a height of 7.5cm, and stored in a constant temperature bath at-5℃and-2℃for 2 weeks. The formation state of the precipitate (appearance of the liquid skin cleansing composition) at this time was visually observed by 10 professional evaluators, and evaluation was performed based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criterion for "Low temperature stability

5, the method comprises the following steps: no precipitation of crystals or solids was observed at-5℃and-2℃for 2 weeks

4, the following steps: no crystal or solid deposition was observed at 2℃for 2 weeks, and no crystal or solid deposition was observed at 5℃for 2 weeks (no problem in commercial value)

3, the method comprises the following steps: at-5℃and-2℃little crystal or solid precipitation was observed within 2 weeks (no problem in commercial value)

2, the method comprises the following steps: at-5 ℃ and-2 ℃ a small amount of crystals or solids are observed to precipitate within 2 weeks

1, the method comprises the following steps: a large amount of crystals or solids precipitated within 2 weeks at-5℃and-2℃were observed

Determination criterion for "Low temperature stability

And (3) the following materials: 4.0 minutes or more

O: 3.0 minutes or more and less than 4.0 minutes

Delta: 2.0 minutes or more and less than 3.0 minutes

X: less than 2.0 minutes

< drainage >

10 professional panelists evaluated the ejectability of the liquid skin cleansing compositions of examples 1 to 33 and comparative examples 1 to 12 when pressed once (about 3 g) based on the following evaluation criteria. As a result, the average scores of the 10 professional evaluators were obtained, and the evaluation was performed based on the following criteria.

Evaluation criteria for "drainage

5, the method comprises the following steps: the pump is very easy to press

4, the following steps: the pump being easily pressed

3, the method comprises the following steps: the pump being slightly easier to press

2, the method comprises the following steps: the pump being slightly less prone to depression

1, the method comprises the following steps: the pump is very difficult to press

Determination criterion for "drainage

And (3) the following materials: 5.0 minutes

O: 4.0 minutes or more and less than 5.0 minutes

Delta: 3.0 minutes or more and less than 4.0 minutes

X: less than 3.0 minutes

[ Table 1 ]

In tables 1 to 11, "POE" refers to an abbreviation of "polyoxyethylene".

In tables 1 to 10, the values of the components (a) to (E) and the components (a) to (C) represent "% by mass".

[ Table 2 ]

[ Table 3 ]

[ Table 4 ]

[ Table 5 ]

[ Table 6 ]

[ Table 7 ]

[ Table 8 ]

The dimethyldiallylammonium chloride-acrylic acid (30:70) copolymer and the acrylic acid-dimethyldiallylammonium chloride-acrylamide (34:31:35) copolymer used in the comparative component (B) are polymer compounds having a structure represented by the following general formula (2).

[ chemical formula 2 ]

Wherein n, m and z in the general formula (2) represent a molar ratio, n is 0, m is 30, and z is 70 in the dimethyldiallylammonium chloride-acrylic acid (30:70) copolymer. The n of the acrylic acid-dimethyldiallylammonium chloride-acrylamide (34:31:35) copolymer is 34, the m is 31, and the z is 35.

Examples 34 to 43

The purified water is heated to 70 to 80 ℃, the higher fatty acid salt of the component (A) and the polyhydric alcohol of the component (D) are dissolved, cooled to 40 ℃ or lower, and then the cationic polymer of the component (B), the nonionic surfactant of the component (C) and the amidopropyl betaine of the component (E) are added, thereby producing a liquid skin cleansing composition in an amount of 95% by mass of the total amount of the finally obtained liquid skin cleansing composition. Then, when the pH does not satisfy the predetermined pH, potassium hydroxide as a common component is added, the pH is adjusted to the predetermined pH, and then purified water is added so that the total amount becomes 100 mass%, to obtain the target liquid skin cleansing composition. Further, a propeller was used as a stirring blade, and a Three-in-one stirrer (HEIDON BL1200, manufactured by new eastern chemical corporation) was used for stirring. The pH was measured at 25℃using a pH meter (model HM-30R, manufactured by TOA DKK Co.).

The obtained liquid skin cleansing compositions of examples 34 to 43 were filled into a container with a foam pump dispenser (discharge amount: 3mL, nozzle diameter (inner diameter): 3.5mm, manufactured by Ginko corporation).

Next, "degree of foam amount", "elasticity of foam", "good degree of foamability", "no squeak at cleaning", "fresh feeling at the end of washing", "moist feeling of skin after drying with towel", "low temperature stability", and "drainage" were evaluated in the same manner as in example 1. Regarding "transparency", evaluation was performed as follows. The results are shown in tables 9 to 10 below.

< transparency >

Each of the liquid skin cleansing compositions of examples 34 to 43 was put into a cylindrical transparent glass bottle having a diameter of 4cm and a height of 7.5cm up to the mouth of the glass bottle, and a pocket-sized near vision card (manufactured by Kagaku Kogyo T.M.I.) was placed at 40cm on the back of the glass bottle, and the marks in the cards were observed to evaluate "transparency" based on the following evaluation criteria. As a result, the average score of 10 professional evaluators was obtained, and the determination was made based on the following determination criteria. In addition, if the average score is 4.0 points or more, the "transparency" is good.

Evaluation criteria for "transparency

5, the method comprises the following steps: transparent, clearly visible marks

4, the following steps: slightly hazy, but marked

3, the method comprises the following steps: slightly hazy, and marks are difficult to observe

2, the method comprises the following steps: haze, little mark was observed

1, the method comprises the following steps: turbidity, no marks were observed at all

Determination criterion for transparency-

Very good: 5.0 minutes

And (3) the following materials: 4.0 minutes or more and less than 5.0 minutes

O: 3.5 min or more and less than 4.0 min

Delta: 3.0 minutes or more and less than 3.5 minutes

X: less than 3.0 minutes

[ Table 9 ]

[ Table 10 ]

The raw materials used in the above examples and comparative examples are shown in table 11 below.

[ Table 11 ]

[ possibility of industrial use ]

The liquid skin cleansing composition of the present invention has a high foam content, good foam elasticity and foamability, and good low-temperature stability and drainage, and is free from squeak feeling during cleansing, a refreshing feeling at the end of washing, and a moist feeling of the skin after wiping with a towel, and therefore, is suitable for use in, for example, cleansing products, hand washes, body washes, cleansing foams, cleansing lotions, and the like, and is particularly suitable for use in body washes.

Claims

1. A liquid skin cleansing composition comprising:

(C) At least one nonionic surfactant selected from polyoxyethylene alkyl ethers having an average molar number of addition of ethylene oxide of 40 to 120, and

(D) A polyhydric alcohol is used in the preparation of a polyol,

the content of the laurate is 1 to 16 mass%,

the content of the myristate is 1 to 6 mass%,

the content of the component (B) is 0.2 to 3% by mass,

the content of the component (D) is 1 to 20% by mass,

the mass ratio of the (A) higher fatty acid salt to the (C) nonionic surfactant, namely A/C, is 2-40,

the liquid skin cleanser composition is filled in a foaming container.

2. The liquid skin cleanser composition of claim 1 wherein the liquid skin cleanser composition further comprises (E) amidopropyl betaine.

3. The liquid skin cleanser composition of claim 1 or 2, wherein the pH of the liquid skin cleanser composition is 9.5-11.0.

4. The liquid skin cleaner composition according to any one of claims 1 to 2, wherein,

the content of the component (B) is 0.3 to 2% by mass,

the content of the component (C) is 0.2 to 4% by mass,

the content of the component (D) is 5 to 15 mass%.

5. The liquid skin cleaner composition according to any one of claims 1 to 2, wherein the content of the laurate is 5 to 16 mass%.

6. The liquid skin cleansing composition according to claim 2, wherein the content of the (E) component is 5 to 15% by mass.