JP2019518021A - Skin cleanser composition - Google Patents

Abstract

Provided is a skin cleaner composition containing cellulose-based particles and having stability and latherability. Skin cleaning composition containing the following components (A) to (E). (A) A fatty acid having a degree of neutralization of 0.85 to 1.02 represented by the general formula (1), or 6 to 18% by mass in terms of a hydrochloric acid thereof R1-COOX (1) (wherein R1 is Represents an alkyl group having 11 to 23 carbon atoms, and X represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium) (B) an alkyl ether sulfate represented by the general formula (2) 0.15 mass% or more and 2 mass % Or less R2-O- (CH2CH2O) n-SO3Y (2) (wherein, R2 represents an alkyl or alkenyl group having 8 to 22 carbon atoms, and n represents an average molar number of addition of 0.5 to 12 oxyethylenes. Y represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium or an organic ammonium) (C) amphoteric surfactant 0.1 mass% or more and 4 mass% or less (D) alkyl modified carboxyvinyl polymer 0.1 mass 1.0 wt% or less (E) cellulosic particles 0.1% by weight to 10% by weight

Description

  The present invention relates to a particle-containing skin cleanser composition.

  Skin cleansers such as face cleansers and body shampoos are often in the form of liquid or foam in view of their usability. Further, in these skin cleansers, anionic surfactants having high detergency are incorporated as main cleansers. Furthermore, in order to improve sebum removal performance, a skin cleanser containing a scrub agent such as polyethylene beads and organogel particles has also been developed and used (patent documents 1 to 3).

(Patent Document 1) JP-A-11-172296 (Patent Document 2) JP-A-2005-539097 (Patent Document 3) JP-A-2006-348258

The present invention provides a skin cleanser composition containing the following components (A) to (E).
(A) A fatty acid having a degree of neutralization of 0.85 to 1.02 represented by the general formula (1), or 6 to 18% by mass in terms of a hydrochloric acid thereof R ¹ -COOX (1)
(Wherein, R ¹ represents a C 11-23 alkyl group, and X represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium)
(B) 0.15% by mass or more and 2% by mass or less of the alkyl ether sulfate represented by the general formula (2) R ² —O— (CH ₂ CH ₂ O) _n —SO ₃ Y (2)
(Wherein R 2 represents an alkyl or alkenyl group having 8 to 22 carbon atoms, n represents an average addition mole number of oxyethylene of 0.5 to 12, and Y represents a hydrogen atom, an alkali metal, an alkaline earth metal, Indicates ammonium or organic ammonium)
(C) Amphoteric surfactant 0.1% by mass to 4% by mass (D) alkyl-modified carboxyvinyl polymer 0.1% by mass to 1.0% by mass (E) cellulose-based particles 0.1% by mass to 10% Mass% or less

Detailed Description of the Invention

Skin cleaners formulated with polyethylene beads, which are widely used conventionally, are not sufficiently satisfactory in terms of feeling in use and the like, and development of skin cleaners incorporating new water-insoluble particles has been desired. Therefore, the present inventor tried to develop a detergent containing cellulose-based particles as water-insoluble particles.
However, it has been found that when cellulose-based particles are blended together with an anionic surfactant, new problems such as stability, dischargeability, latherability and the like occur such that the dischargeability from the container after storage is reduced.
Therefore, the present invention is to provide a skin wash composition containing cellulose-based particles and having stability and latherability and the like.

  Then, when this inventor examined variously, it is a cellulose type particle by using fatty acid salt and alkyl ether sulfate together as an anionic surfactant, and mix | blending a fixed quantity of an amphoteric surfactant and an alkyl-modified carboxyvinyl polymer. The present invention has been accomplished based on the finding that a skin cleanser composition is obtained which is excellent in dischargeability from a container, excellent in lathering ability, good in rinseability, good in scrub feeling, and good in long-term storage stability. .

  The skin cleanser composition of the present invention contains cellulose-based particles as a scrubbing agent component, has excellent scrub feeling, is excellent in dischargeability from a container, foamability, rinseability, and long-term storage stability. The discharge from the container after storage is also good.

The component (A) used in the skin cleanser composition of the present invention is a fatty acid having a degree of neutralization of 0.85 to 1.02 represented by the following general formula (1) or a salt thereof.
R ^1- COOX (1)
(Wherein, R ¹ represents a C 11-23 alkyl group, and X represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium)

In the general formula (1), the R ^1, preferably an alkyl group having a straight chain of 11-16 carbon atoms. In addition, examples of X include: alkali metals such as sodium and potassium; ammonium; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; and cations derived from basic amino acids such as arginine and lysine.

  More specifically, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, salts thereof and the like can be mentioned, and lauric acid, myristic acid, palmitic acid and salts thereof preferable. Among these, potassium salts of lauric acid, myristic acid and palmitic acid are more preferable. These fatty acids or salts thereof can be used alone or in combination of two or more.

The degree of neutralization of the fatty acid or its salt (1) is 0.85 to 1 from the viewpoint of improving the washability, ease of stretching, latherability, rinseability, scrub feeling, dischargeability from the container, and storage stability. And is more preferably 0.85 to 0.97, and still more preferably 0.87 to 0.94. Here, the degree of neutralization is represented by the ratio of the number of moles of the added base to the number of moles of the carboxyl group of the monomer having a carboxyl group.
That is, the skin cleanser composition of the present invention is considered to contain a fatty acid and its salt when the degree of neutralization is less than 1.0 as the compound represented by the general formula (1), and the degree of neutralization is 1 When it exceeds 0, only fatty acid salts are considered to be present. That is, in the skin cleanser composition, the component (A) is considered to be present as a fatty acid and a fatty acid salt or a fatty acid salt.

The content of the component (A) is 6% by mass or more and 18% by mass or less in terms of acid in the skin cleanser composition from the viewpoint of improving the skin cleansing property, lathering property, rinse property and storage stability. Preferably it is 8 mass% or more, More preferably, it is 10 mass% or more, More preferably, it is 12 mass% or more, Moreover, preferably it is 17 mass% or less, More preferably, it is 16 mass% or less. 8-17 mass% is preferable, as for the range of content of a specific component (A), 10-17 mass% is more preferable, and 12-16 mass% is further more preferable.
Moreover, 2 mass% or less is preferable in acid conversion in skin cleaner composition, and, as for content of fatty acid other than component (A) or its salt, 1 mass% or less is more preferable, 0.1 mass% or less More preferably, 0% by mass is more preferable.

The component (B) used in the present invention is an alkyl ether sulfate represented by the following general formula (2).
R ² -O- (CH ₂ CH ₂ O) _n -SO ₃ Y (2)
(Wherein R ² represents an alkyl or alkenyl group having 8 to 22 carbon atoms, n represents an average added mole number of oxyethylene of 0.5 to 12, and Y represents a hydrogen atom, an alkali metal, an alkaline earth metal) , Ammonium (NH ₄ ⁺ ) or organic ammonium)

In the general formula (2), R ² is preferably a linear or branched alkyl or alkenyl group having 12 to 18 carbon atoms, and further, a linear or branched alkyl or alkenyl group having 12 to 14 carbon atoms preferable.
The average value n of the oxyethylene addition mole number is preferably 0.5 to 10, and more preferably 0.5 to 5 from the viewpoint of improving the feeling of use such as washability, foamability, rinseability, moist feeling and the like. Furthermore, 0.5 to 3 are more preferable.
Examples of Y include alkali metals such as sodium and potassium; alkaline earth metals such as calcium; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; and cations derived from basic amino acids such as arginine and lysine.

  The content of the component (B) is 0.15% by mass or more, preferably 0.18% by mass or more, in the skin cleanser composition, from the viewpoint of improving the detergency, the latherability and the long-term storage stability. More preferably, it is 0.19 mass% or more, still more preferably 0.20 mass% or more, and 2 mass% or less, preferably 1.8 mass% or less, more preferably 1.6 mass % Or less, still more preferably 1.0% by mass or less, and still more preferably 0.50% by mass or less. The specific range of the content of the component (B) is 0.15 to 2% by mass, preferably 0.18 to 1.8% by mass, more preferably 0.19 to 1.6% by mass, further preferably Is 0.20 to 1.0% by mass, and more preferably 0.20 to 0.50% by mass.

  The content ratio (A / B) of the component (A) to the component (B) is the washing property, ease of stretching, foaming property, rinsing property, scrub feeling, discharge property from the container, feeling of use such as moist feeling, storage From the viewpoint of improving the stability, 5 or more is preferable, 10 or more is more preferable, 30 or more is more preferable, 56 or more is still more preferable, 80 or less is preferable, 70 or less is more preferable, 68 or less is more preferable, 65 or less is even more preferred. As a specific range of A / B, 5-80 are preferable, 10-70 are more preferable, 30-68 are more preferable, and 56-65 are still more preferable.

Component (C) used in the present invention is an amphoteric surfactant. The amphoteric surfactant is not particularly limited as long as it is used in ordinary detergents, and is, for example, a betaine acetate surfactant such as lauryl dimethylamino acetic acid betaine, an amine oxide surfactant such as lauryl dimethyl amine oxide Imidazolinium betaine type surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, amidobetaine type surfactants such as lauric acid amidopropyl betaine, sulfo such as lauryl hydroxy sulfobetaine Betaine type surfactant etc. are mentioned.
Among them, amidobetaine type surfactants such as amidopropyl betaine laurate and sulfobetaine type surfactants such as lauryl hydroxysulfobetaine are preferable from the viewpoint of improving the foaming property and the feeling of use of the skin cleanser composition.

  The content of the component (C) is 0.1% by mass or more and 4% by mass or less, preferably 0.2% by mass, in the skin cleanser composition, from the viewpoint of improving the foaming property, the rinse property, and the storage stability. % Or more, more preferably 0.3% by mass or more, still more preferably 0.4% by mass or more, still more preferably 0.6% by mass or more, preferably 3% by mass or less, more preferably 2 It is at most mass%, more preferably at most 1.8 mass%, even more preferably at most 1.0 mass%. 0.2-3 mass% is preferable, as for the range of content of a specific component (C), 0.3-2 mass% is more preferable, 0.4-1.8 mass% is more preferable, 0. 6 to 1.0% by mass is even more preferred.

  In addition, the total content (B + C) of the component (B) and the component (C) is 0 from the viewpoint of improving the foaming stability, rinsability, ease of stretching, ease of use such as scrub feeling and moist feeling, storage stability .3 mass% or more is preferable, 0.5 mass% or more is more preferable, 0.6 mass% or more is more preferable, 0.7 mass% or more is still more preferable, 6 mass% or less is preferable, 4 mass% The following is more preferable, 2 mass% or less is more preferable, and 1.0 mass% or less is still more preferable. 0.3-6 mass% is preferable, as for the range of content of said specific (B + C), 0.5-4 mass% is more preferable, 0.6-2 mass% is more preferable, and 0.7- 1.0 mass% is even more preferred.

  Component (D) used in the present invention is an alkyl-modified carboxyvinyl polymer. As the alkyl-modified carboxyvinyl polymer, (meth) acrylic acid / (meth) acrylic acid alkyl copolymer is preferable, and acrylic acid / methacrylic acid alkyl copolymer (INCI: ACRYLATES / C10-30 ALKYL ACRYLATE CROSSPOLYMER) is more preferable . Commercially available products include Carbopol SC200, Carbopol ETD 2020 and Pemulen TR-2. One or more of these may be used.

The content of the component (D) is 0. 0 or less in the skin cleanser composition from the viewpoint of improving the foaming stability, ease of stretching, feeling of scrubbing, discharge from the container, feeling of use such as moist feeling, storage stability. It is 1% by mass or more and 1.0% by mass or less, preferably 0.2% by mass or more, more preferably 0.3% by mass or more, and further preferably 0.5% by mass or more. 0.2-1.0 mass% is preferable, as for the range of content of a specific component (D), 0.3-1.0 mass% is more preferable, 0.5-1.0 mass% is still more preferable .
In addition, in the range which does not impair the effect of this invention, water-soluble polymers other than component (D), for example, the carboxy vinyl polymer which is not alkyl-modified, can be contained in skin cleansing composition. The content of the non-alkyl-modified carboxyvinyl polymer in the skin cleanser composition is preferably 0.3% by mass or less, and 0.1% by mass or less from the viewpoint of improving the foaming property, the feeling in use, and the storage stability Is more preferably 0.01% by mass or less, and most preferably substantially 0% by mass.

  Component (E) used in the present invention is a cellulose-based particle. Examples of the cellulose-based particles include cellulose-based powders having an average particle diameter of 100 to 700 μm and cellulose-containing disintegratable granules. Among these, cellulose-based powders having an average particle diameter of 100 to 700 μm are more preferable.

Cellulose acetate, powdered cellulose, crystalline cellulose are mentioned as a cellulose type powder. The average particle size of these cellulose-based powders is preferably 100 to 700 μm.
In the present invention, the average particle size of the average particle size cellulose-based powder is measured using DIN EN ISO 4610 / air jet sieve.

The cellulose-containing disintegrable granules include, for example, granules comprising one or more selected from crystalline cellulose and corn starch and ethylcellulose.
Among these, crystalline cellulose and corn starch are bases constituting disintegrable granules. These base powders function as water-insoluble primary particles. The shape of these primary particles may be spherical, indeterminate or the like, and among them, spherical shape is preferable from the viewpoint of reducing excessive stimulation during massage.

  Crystalline cellulose is obtained by partially depolymerizing α-cellulose with a mineral acid and purifying it, and represents unmodified cellulose.

  The disintegrable granules preferably contain at least one selected from crystalline cellulose and corn starch, and from the viewpoint of improving the storage stability of the cosmetic at high temperature, it preferably contains crystalline cellulose.

  The content of crystalline cellulose and corn starch in the disintegratable granules is 80 mass of the total of crystalline cellulose and corn starch relative to the whole disintegratable granules, from the viewpoint of giving the granule feeling and desirable disintegrable granule disintegration speed at the time of massaging % Or more, preferably 85% by mass or more, more preferably 89% by mass or more, and 99% by mass or less, more preferably 97% by mass or less, still more preferably 95% by mass or less.

The disintegrable granules may also contain components other than the above-mentioned crystalline cellulose or corn starch as a base. Bases other than crystalline cellulose and corn starch include, for example, polyethylene, polystyrene, polyester, polyvinyl chloride, polyamide, polypropylene, nylon, polyvinylidene fluoride, polyurethane, acrylic resin, polysiloxane, corn starch, starch and derivatives thereof Organic polymer compounds; and inorganic compounds such as silica, alumina, talc, kaolin, titanium oxide, zinc oxide, quartz, calcium phosphate and the like.
The shape of the primary particles composed of the powders of these bases may be either spherical or amorphous, and among them, it is spherical from the viewpoint of reducing excessive irritation to the skin during massage. preferable.
The content of the crystalline cellulose and the base other than corn starch in the disintegratable granules is preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 5% by mass, based on the whole disintegratable granules. The content is more preferably 1% by mass or less, particularly preferably 0.1% by mass or less.

The average particle diameter of the primary particles of crystalline cellulose, corn starch and other bases is preferably 1 μm or more, more preferably 3 μm or more, from the viewpoint of giving a feeling of granules and a preferable disintegration speed of disintegrating granules during massage. is there. Also, from the viewpoint of suppressing the occurrence of excessive irritation after disintegration of disintegratable granules, the average particle diameter of crystalline cellulose, corn starch and other primary particles is preferably 100 μm or less, more preferably 20 μm or less More preferably, it is 15 μm or less.
Here, the average particle diameter of primary particles of crystalline cellulose, corn starch and other base is a number average particle diameter measured by a laser diffraction / scattering type particle size distribution measuring apparatus LA-910 (manufactured by Horiba, Ltd.) .

Among the ingredients contained in the disintegrable granules, ethylcellulose functions as a binder in the disintegrable granules.
The content of ethylcellulose in the disintegrable granules is 1% by mass or more, preferably 3% by mass or more, based on the whole disintegratable granules, from the viewpoint of giving a feeling of granules and a preferable disintegration speed of disintegrable granules during massage. More preferably, it is 5% by mass or more, preferably 18% by mass or less, more preferably 15% by mass or less, and still more preferably 12% by mass or less.

Also, the disintegratable granules can contain a binder other than ethylcellulose.
Examples of binders other than ethylcellulose include oil-based binders such as animal and vegetable oils which are solid at normal temperature such as hardened fish oil, hardened castor oil and hardened rapeseed oil; and acetyl cellulose, nitrocellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose And aqueous binders such as polyvinylpyrrolidone, vinyl acetate, and organic polymer compounds such as polyvinyl alcohol.

The content of a binder other than ethylcellulose in the disintegratable granules improves the storage stability of the cosmetic at high temperature, and gives a feeling of the granules at the time of massaging and a preferable disintegration speed of the disintegratable granules. On the other hand, the content is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, and even more preferably 0.1% by mass or less.
In addition, the compounding ratio of the base to the binder in the disintegrable granules is preferably base: binder = 80: 20 to 99: from the viewpoint of giving a feeling of granules and a preferable disintegration speed of the disintegrable granules at the time of massaging. 1, more preferably 85:15 to 98: 2, still more preferably 90:10 to 95: 5.

  The disintegrable granules can be produced by a general granulation method such as, for example, a fluidized bed granulation method, a stirring granulation method, and an extrusion granulation method. Among them, the method described in JP-A-60-152407, more specifically, a method of dissolving a water-insoluble binder in a solvent and volatilizing an organic solvent for production; or JP-A-6-271417 More specifically, water-insoluble binder powder is mixed with primary particles of granules and then granulated with a water-soluble binder, and then heated to melt the water-insoluble binder powder and cooled. It is preferable to manufacture according to the method etc. which raise the water resistance of a granule.

The average particle diameter of the disintegrable granules is preferably 100 μm or more, more preferably 200 μm or more, and still more preferably 250 μm or more from the viewpoint of giving a feeling of granules and a preferable disintegration speed of the disintegrable granules during massage. Further, from the viewpoint of reducing excessive irritation to the skin, the average particle size of the disintegratable granules is preferably 2000 μm or less, more preferably 1000 μm or less, and still more preferably 500 μm or less.
Here, the average particle diameter of the disintegrating granules is the number average particle diameter before being blended into the cosmetic, which is measured by the following method. That is, the granules of 10 disintegrable granules are arbitrarily selected, the particle diameter of each 1 is measured using Digipat PC-15J (manufactured by Mitutoyo), and the number of disintegrable granules is calculated by calculating the average value thereof. An average particle size is obtained.

  The content of the component (E) is preferably 0.1% by mass or more and 10% by mass or less in the skin cleanser composition, from the viewpoint of obtaining a good scrub feeling, and from the viewpoint of improving the latherability and storage stability Is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, preferably 8% by mass or less, more preferably 6% by mass or less, still more preferably 5% by mass or less. As a range of concrete content of ingredient (E), 0.3-8 mass% is preferred, 0.5-6 mass% is more preferred, and 0.5-5 mass% is still more preferred.

  In the present invention, the content mass ratio (D / E) of the component (D) to the component (E) is preferably 0.025 or more from the viewpoint of good scrub feeling, latherability and storage stability, 0.05 The above is more preferable, 0.125 or more is further preferable, 0.25 or more is further more preferable, 3.3 or less is preferable, 2 or less is more preferable, 1 or less is more preferable, 0.7 or less is further more preferable .

  The skin cleanser composition of the present invention preferably further contains (F) a polyol from the viewpoint of improving storage stability and moist feeling. As such a polyol, any one may be used as long as it is used in a general detergent composition, and for example, polyvalent compounds such as glycerin, propylene glycol, dipropylene glycol, ethylene glycol, polyethylene glycol, isoprene glycol, 1,3-butylene glycol and the like Examples include sugar alcohols such as alcohol, sorbitol, xylitol, mannitol and maltitol. Of these, sugar alcohols are preferred. Component (F) can be used alone or in combination of two or more.

  From the viewpoint of improving storage stability and moist feeling, the content of the component (F) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and 1% by mass in the skin cleanser composition. The above is more preferable, 4% by mass or more is further more preferable, 5.5% by mass or more is the most preferable, 20% by mass or less is preferable, 15% by mass or less is more preferable, 12% by mass or less is more preferable, 9% by mass % Or less is even more preferable, and 8% by mass or less is most preferable. As a range of a specific component (F), 0.1-20 mass% is preferable, 0.5-15 mass% is more preferable, 1-12 mass% is more preferable, 4-9 mass% is further more Preferably, 5.5 to 8% by mass is more preferable.

  The skin cleanser composition of the present invention may further contain water as a solvent. The content of water is preferably 20 to 90% by mass, more preferably 40 to 85% by mass, still more preferably 60 to 80% by mass, based on the total composition, and the rest of the components and other components constituting the cleaning composition. It becomes.

  The skin cleanser composition of the present invention may further comprise a component for use in a conventional cleaner, such as surfactants other than components (A), (B) and (C), moisturizers other than component (F), It may contain an oily component, a bactericidal agent, an anti-inflammatory agent, an antiseptic agent, a chelating agent, salts, a pearlescent agent, a flavor, a cooling agent, a pigment, an ultraviolet light absorber, an antioxidant, a plant extract and the like. Each of these agents is not limited to the use as each agent, and other uses depending on the purpose, for example, using a fragrance as a cooling agent, or as a combination with other uses, for example, a fragrance and a cooling agent It can be used as one that produces the effect of

The skin cleanser composition of the present invention is produced by mixing the formulation components by a conventional method and obtained as a liquid.
Here, the liquid state means that the viscosity is 300 to 18,000 mPa · s when measured with a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at 30 ° C. Furthermore, 1,000 to 15,000 mPa · s is preferable, and 2,000 to 12,000 mPa · s is preferable from the viewpoint of dischargeability and ease of stretching of the agent.

  In the skin cleanser composition of the present invention, the pH is preferably 8 to 12, and more preferably 9 to 11. The measurement of pH is a value obtained by diluting each detergent composition at 25 ° C. with ion-exchanged water 20 times.

The skin cleanser composition of the present invention is suitable as, for example, a cleanser, a body soap, a hand soap, etc., and a cleanser and a body soap are preferable.
The method of cleansing the skin using the skin cleanser composition of the present invention is, for example, as follows. That is, the skin cleansing composition of the present invention is applied to a body, that is, a body skin part such as a face, a limb, a torso, etc., lathered and washed, and then it is a rinsing method using warm water such as a shower. In addition, it is also possible to apply an appropriate amount to cleaning aids such as towels, sponges, brushes, etc., and perform foaming and cleaning.

  With regard to the embodiments described above, the present invention further discloses the following composition.

<1> Skin cleansing composition containing the following components (A) to (E).
(A) A fatty acid having a degree of neutralization of 0.85 to 1.02 represented by the general formula (1), or 6 to 18% by mass in terms of a hydrochloric acid thereof R ¹ -COOX (1)
(Wherein, R ¹ represents a C 11-23 alkyl group, and X represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium)
(B) 0.15% by mass or more and 2% by mass or less of the alkyl ether sulfate represented by the general formula (2) R ² —O— (CH ₂ CH ₂ O) _n —SO ₃ Y (2)
(Wherein R ² represents an alkyl or alkenyl group having 8 to 22 carbon atoms, n represents an average added mole number of oxyethylene of 0.5 to 12, and Y represents a hydrogen atom, an alkali metal, an alkaline earth metal) Indicate ammonium, or organic ammonium)
(C) Amphoteric surfactant 0.1% by mass to 4% by mass (D) alkyl-modified carboxyvinyl polymer 0.1% by mass to 1.0% by mass (E) cellulose-based particles 0.1% by mass to 10% Mass% or less

<2> the general formula (1), R ¹ is a straight chain alkyl group having 11 to 16 carbon atoms <1> The skin cleansing composition.
The skin wash composition according to <1> or <2>, wherein the degree of neutralization of the <3> component (A) is preferably 0.85 to 0.97, more preferably 0.87 to 0.94.
The content of the (4) component (A) is preferably 8% by mass or more, more preferably 10% by mass or more, still more preferably 12% by mass or more, and preferably 17% by mass or less, more preferably 16% by mass. Skin wash composition in any one of <1>-<3> which is% or less.
The content of the <5> component (A) is preferably 8 to 17% by mass, more preferably 10 to 17% by mass, and still more preferably 12 to 16% by mass. The skin cleanser composition as described.
In <6> General Formula (2), R ² is preferably a linear or branched alkyl group having 12 to 18 carbon atoms or an alkenyl group, more preferably a linear or branched alkyl group having 12 to 14 carbon atoms Or skin cleanser composition in any one of <1>-<5> which is an alkenyl group.
In <7> general formula (2), the average value n of the oxyethylene addition mole number is preferably 0.5 to 10, more preferably 0.5 to 5, and still more preferably 0.5 to 3 <1 Skin cleanser composition in any one of <-><6>.
The content of the <8> component (B) in the skin cleanser composition is preferably 0.18 mass% or more and 1.8 mass% or less, more preferably 0.19 mass% or more and 1.6 mass% or less The skin cleansing composition according to any one of <1> to <7>, which is more preferably 0.20% by mass or more and 1.0% by mass or less.
The content mass ratio (A / B) of the component (A) to the component (B) is preferably 5 or more, more preferably 10 or more, still more preferably 30 or more, still more preferably 56 or more, The skin wash composition according to any one of <1> to <8>, which is preferably 80 or less, more preferably 70 or less, still more preferably 68 or less, still more preferably 65 or less.
The content mass ratio (A / B) of the <10> component (A) to the component (B) is preferably 5 to 80, more preferably 10 to 70, still more preferably 30 to 68, still more preferably 56 to 65 The skin cleanser composition in any one of <1>-<9>.
<11> Component (C) is one selected from a betaine acetate surfactant, an amine oxide surfactant, an imidazolinium betaine surfactant, an amidobetaine surfactant and a sulfobetaine surfactant The skin cleansing agent composition in any one of <1>-<10> which is the above.
The skin washing agent composition in any one of <1>-<11> whose <12> component (C) is 1 or more types chosen from an amido betaine type surfactant and a sulfo betaine type surfactant.
The content of the <13> component (C) in the skin cleansing composition is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.4% by mass or more, and further more It is preferably 0.6% by mass or more, preferably 3% by mass or less, more preferably 2% by mass or less, still more preferably 1.8% by mass or less, and still more preferably 1.0% by mass or less. The skin cleanser composition in any one of 1>-<12>.
The content of the component (C) in the skin cleanser composition is preferably 0.2 to 3% by mass, more preferably 0.3 to 2% by mass, and still more preferably 0.4 to 1.8. Skin wash composition in any one of <1>-<13> which is mass%, even more preferably 0.6-1.0 mass%.
The total content of <15> component (B) and component (C) is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, still more preferably 0.6% by mass or more, still more preferably Is 0.7% by mass or more, preferably 6% by mass or less, more preferably 4% by mass or less, still more preferably 2% by mass or less, and even more preferably 1.0% by mass or less <1> The skin cleanser composition in any one of <14>.
The total content of the <16> component (B) and the component (C) is preferably 0.3 to 6% by mass, more preferably 0.5 to 4% by mass, and still more preferably 0.6 to 2% by mass. The skin cleanser composition according to any one of <1> to <15>, which is even more preferably 0.7 to 1.0% by mass or less.
The content of the <17> component (D) in the skin cleanser composition is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, and still more preferably 0.5% by mass or more. The skin cleanser composition in any one of 1>-<16>.
The content of the <18> component (D) is preferably 0.2 to 1.0% by mass, more preferably 0.3 to 1.0% by mass, and still more preferably 0.5 to 1.0% by mass. The skin cleanser composition in any one of <1>-<17>.
The <19> component (E) is preferably a cellulose-based powder having an average particle diameter of 100 to 700 μm, or a cellulose-containing disintegrable granule having an average particle diameter of 100 to 700 μm, more preferably a cellulose based particle having an average particle diameter of 100 to 700 μm The skin cleanser composition in any one of <1>-<18> which is powder.
The content of the <20> component (E) in the skin cleansing composition is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and preferably 8% by mass or less, more preferably The skin cleanser composition in any one of <1>-<19> which is 6 mass% or less, more preferably 5 mass% or less.
The content of the <21> component (E) is preferably 0.3 to 8% by mass, more preferably 0.5 to 6% by mass, and still more preferably 0.5 to 5% by mass <1> to < 20. The skin cleanser composition according to any of 20>.
The content mass ratio (D / E) of the <22> component (D) to the component (E) is preferably 0.025 or more, more preferably 0.05 or more, still more preferably 0.125 or more, 0.25 or more Is still more preferable, and 3.3 or less is preferable, 2 or less is more preferable, 1 or less is more preferable, and 0.7 or less is still more preferable <1> to <21> object.
<23> The skin cleanser composition according to any one of <1> to <22>, which further contains a component (F) polyol.
The skin cleansing composition as described in <23> whose <24> component (F) is 1 or more types chosen from sugar alcohol.
The content of the <25> component (F) in the skin cleanser composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more, and 4% by mass or more Is more preferable, 5.5 mass% or more is more preferable, 20 mass% or less is preferable, 15 mass% or less is more preferable, 12 mass% or less is more preferable, 9 mass% or less is more preferable, 8 mass% or less The skin cleanser composition according to <23> or <24>.
0.1-20 mass% is preferable, as for content of a <26> component (F), 0.5-15 mass% is more preferable, 1-12 mass% is more preferable, 4-9 mass% is more preferable. The skin cleansing composition according to any one of <23> to <25>, in which 5.5 to 8% by mass is more preferable.
<27> The skin cleansing composition according to any one of <1> to <26>, further containing water.
The skin cleanser composition as described in <27> whose content of <28> water is 20-90 mass%, preferably 40-85 mass%, more preferably 60-80 mass%.
It is a <29> liquid state, The viscosity in 30 degreeC is preferable 300-18000 mPa * s, More preferably, it is 1000-15000 mPa * s, More preferably, it is 2000-12000 mPa * s <1>-<28> The skin cleanser composition as described in any of the above.
The washing | cleaning method for rinse after applying and wash | cleaning the cleaning composition as described in <30><1>-<28> to skin.
Use as a skin-cleansing composition which applies and wash | cleans the cleaning composition as described in <31><1>-<28> to skin.

  The present invention will now be described in more detail by way of examples.

Examples 1 to 10 and Comparative Examples 1 to 9
Skin cleansing agents having the compositions shown in Tables 1 and 2 were produced, and their performances were evaluated. The evaluation results are shown in Tables 1 and 2. Component (A) is a fatty acid and a fatty acid salt, or a fatty acid salt, but in the present invention, the content of component (A) is the acid equivalent content, so the compounding amount of fatty acid as component (A) Listed.

(Production method)
Each component (except potassium hydroxide) and water were mixed and heated to 70 ° C. to be uniform. After this, the desired amount of potassium hydroxide was added and stirred to homogenize. Furthermore, it cooled to room temperature (25 degreeC), stirring, and obtained skin cleansing composition. 200 g of the resulting skin cleanser composition was filled into a 250 g capped bottle.

(Evaluation method)
(1) Ejectability When the container is held with the outlet side facing vertically to the palm by five expert panelists at 25 ° C., 3 g of the skin cleanser composition is taken out lightly, it is removed from the container The ease of taking out the agent was evaluated based on the following criteria. The average value of the results of five panelists was taken as the evaluation result of the liquid skin cleanser.
5: Good dischargeability.
4; The dischargeability is somewhat good.
3; I can not say either.
2: Excellent dischargeability 1) Poor dischargeability.

(2) Ease of Ease Taking 5g of each skin cleanser composition by hand by five expert panelists, add a small amount of water and extend the whole body by hand. The sensory evaluation was performed on the basis of the average score of each score.
5: Easy to spread the agent uniformly.
4; The agent is easy to stretch somewhat uniformly.
3; I can not say either.
2; The agent does not stretch somewhat uniformly.
1; agent does not stretch uniformly.

(3) Foaming property By five expert panelists, 1 g of each skin cleansing agent is taken by hand, a small amount of water is added, and it rubs 10 times by hand and foams. About the foaming property at that time, it was sensory-evaluated by the 5-step evaluation criteria shown below, and the average value of each score was calculated | required.
5; bubbling is good.
4; Foaming is somewhat good.
3; I can not say either.
2; Foaming is not so good.
1; Foaming is not good.

(4) Scrub feeling By five expert panelists, 1 g of each skin cleanser composition is hand-picked, and a small amount of water is added and rubbed 10 times by hand to foam. Then massage 10 times while stretching over one arm. Furthermore, the other hand was pressed against one arm, and the sense of touch of the scrub at that time was subjected to sensory evaluation according to the following five-point evaluation criteria, and the average value of each score was determined.
5; I feel grain clearly.
4; grains are felt.
3; Some grains are felt.
2; I can not feel grain very much.
1; No grains are felt at all.

(5) Rinseability By five expert panelists, 1 g of each skin cleanser is taken by hand, a small amount of water is added, and it is rubbed 10 times by hand to foam. Then massage 10 times while stretching over one arm. Then rinse with tap water. About the rinse property at that time, it was sensory-evaluated by the 5-stage evaluation criteria shown below, and the average value of each score was calculated | required.
5; easy to rinse.
4; somewhat easy to rinse.
3; I can not say either.
2; not easy to rinse
1; not easy to rinse

(6) Moist feeling By five expert panelists, 1 g of each skin cleansing agent is taken by hand, a small amount of water is added, and it rubs 10 times by hand and froths. Then massage 10 times while stretching over one arm. Then rinse with tap water. About the moist feeling after wiping with a towel, it was sensory-evaluated by the five-step evaluation criteria shown below, and the average value of each score was calculated | required.
5; moist.
4; somewhat moist.
3; I can not say either.
2; not very moist.
1; not moist

(7-1) Storage stability at 10 ° C. 100 g of each skin cleanser composition is put in a 130 mL glass bottle, and then sealed and allowed to stand at 10 ° C. for 7 days; It observed visually with the two-step evaluation criteria shown below, and set it as the score.
a: There is no precipitation in appearance and is fluid.
b: Appearance is observed precipitation is not flowable.
(7-2) Storage stability at 50 ° C. 100 g of each skin cleanser composition is put in a 130 mL glass bottle, sealed, allowed to stand at 50 ° C. for 7 days, and floating of scrub in skin cleanser (or The state of sedimentation) or the state of separation of the liquid was visually observed and rated according to the two-stage evaluation criteria shown below.
a: The water-insoluble particles are uniformly dispersed, and the solution is also uniform.
b: Water-insoluble particles are heterogeneous or // liquid is separated at the same time.

* 1 Renack L-98 (made by Kao Corporation)
* 2 Lunac MY-98 (made by Kao Corporation)
* 3 Lunac P-95 (manufactured by Kao Corporation)
* 4 JP-A-2013-53092 Production Example 1
* 5 EMAR 227 HP (manufactured by Kao Corporation, average POE = 2, effective portion 27%)
* 6 AMPHITOL 20HD (manufactured by Kao, 30% of the effective portion)
* 7 AMPHITOL 20AB (manufactured by Kao, 30% of the effective portion)
* 8 Sorbitol (manufactured by Kao, active 70%)
* 9 Erythritol (Maruzen Pharmaceutical Co., Ltd.)
* 10 Xylitol (manufactured by Eisai Food Chemical Co., Ltd.)
* 11 CARBOPOL SC200 (made by Nobeon)
* 12 CARBOPOL 981 (Lublisol Advanced Materials)
* 13 VITACEL CS250G (Rettenmeyer, Cellulose content 99% or more, Specific gravity 1.3 g / cm ³ , Average particle size 300 μm according to DIN EN ISO 4610 / air jet sieve)
* 14 CR-50 (manufactured by Ishihara Sangyo Co., Ltd.)

  In Tables 1 and 2, in Comparative Examples 1 and 2, the content of the component (A) is outside the scope of the present invention. In Comparative Examples 3 and 4, the degree of neutralization of the component (A) is outside the scope of the present invention. In Comparative Example 5, the content of the components (B) and (C) is outside the scope of the present invention. Comparative example 6 is an example which does not contain the components (B) and (C). In Comparative Example 7, the content of the component (D) is outside the scope of the present invention. Comparative Examples 8 and 9 each have polymers outside the scope of the present invention. These comparative examples were inferior to any of Examples 1 to 10 of the present invention in any of the scrub feeling, the foaming property, the rinse property, the discharge property from the container, the feeling in use (moist feeling), and the storage stability. . Further, in Examples 1 to 10 of the present invention, there was no precipitation even after storage, the fluidity was good, and the dischargeability from the container was all good.

Claims (6)

Skin cleaning composition containing the following components (A) to (E).
(A) A fatty acid having a degree of neutralization of 0.85 to 1.02 represented by the general formula (1), or 6 to 18% by mass in terms of a hydrochloric acid thereof R ¹ -COOX (1)
(Wherein, R ¹ represents a C 11-23 alkyl group, and X represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium)
(B) 0.15% by mass or more and 2% by mass or less of the alkyl ether sulfate represented by the general formula (2) R ² —O— (CH ₂ CH ₂ O) _n —SO ₃ Y (2)
(Wherein R ² represents an alkyl or alkenyl group having 8 to 22 carbon atoms, n represents an average added mole number of oxyethylene of 0.5 to 12, and Y represents a hydrogen atom, an alkali metal, an alkaline earth metal) Indicate ammonium, or organic ammonium)
(C) Amphoteric surfactant 0.1% by mass to 4% by mass (D) alkyl-modified carboxyvinyl polymer 0.1% by mass to 1.0% by mass (E) cellulose-based particles 0.1% by mass to 10% Mass% or less   The skin cleanser composition according to claim 1, which has a viscosity of 30 mPa · s to 18,000 mPa · s at 30 ° C.   The skin cleanser composition according to claim 1 or 2, wherein the total content of the component (B) and the component (C) is 0.3% by mass or more and 6% by mass or less.   The skin cleanser composition according to claim 1 or 2, wherein a content mass ratio (A / B) of the component (A) to the component (B) is 5 or more and 80 or less.   The skin cleanser composition according to claim 1 or 2, wherein a content weight ratio (D / E) of the component (D) to the component (E) is 0.025 or more and 3.3 or less.   The skin cleanser composition according to claim 1 or 2, further comprising a component (F) polyol.