JP2008174502A - Skin cleanser composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a skin cleanser composition good in dissolving disintegrability in its use, giving smooth foams, free of sliminess with being mild in unpleasant touch feeling when rinsing the skin, thus good in feeling in use. <P>SOLUTION: The skin cleanser composition comprises (A) 5-30 mass% of an anionic surfactant, (B) 0.005-0.07 mass% of a cationic polymer and (C) 0.5-10 mass% of glyceryl ether. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a skin cleansing composition.

  Skin cleansing is very important for facial and body care. If oily residues, such as excess sebum or daily cosmetic residues (makeup cosmetics, especially water-resistant cosmetics) accumulate in the skin folds, clog the skin pores, resulting in pimples there is a possibility. Therefore, cleaning to properly remove these needs to be as effective as possible. In addition, skin cleansers such as facial cleansers and whole body cleansers have a long time of direct contact with the skin at the time of cleaning. Therefore, not only foam performance and cleaning effect, but also less irritation to the skin, rinse and after washing From the viewpoint of ease of use and ease of use, the agent is required to have good meltability.

  In order to solve the above problems, it is represented by anionic surfactants such as fatty acid salt type surfactants and acetate type surfactants, amphoteric surfactants and nonionic surfactants such as surfactants having a sugar skeleton. Various skin cleansing compositions have been developed that contain a surfactant as a cleaning component. However, it is difficult to satisfy all of the required performances such as foam performance, cleaning effect, skin irritation, good feeling during rinsing and after washing, and dissolution of the agent.

Patent Document 1 discloses a transparent gel cleansing composition containing a phosphate ester type surfactant, a foaming nonionic surfactant, and a cationic polymer not containing a saccharide group. Although this cleansing composition is improved in terms of obtaining a stable transparent gel, it is still insufficient in terms of the amount of foam and the quality of the foam, and the slickness during rinsing.
JP 2002-87950 A

  The purpose of the present invention is to improve the amount of foam and the quality of foam, which is still insufficient in the prior art, and to provide appropriate rinsing properties. An object of the present invention is to provide a skin cleanser composition that has a good sensation of use and has a mild squeak when rinsing.

  The present inventors have found that a skin cleanser composition that solves the above problems can be obtained by using an anionic surfactant, a cationic polymer, and glyceryl ether in combination at a specific ratio, thereby completing the present invention. .

The present invention includes the following components (A), (B) and (C):
(A) 5-30% by mass of an anionic surfactant,
(B) Cationic polymer 0.005-0.07 mass%,
(C) Glyceryl ether 0.5-10 mass%
The skin cleansing composition containing this is provided.

  The skin cleanser composition of the present invention has improved foam volume and foam quality, has good melt-disintegrating properties during cleansing, gives smooth foam, has no squeaky squeak when rinsed, and feels good to use. It is good.

  The anionic surfactant of the component (A) used in the present invention is a main cleaning component of the cleaning composition of the present invention. For example, higher fatty acid soap, alkyl phosphate, polyoxyalkylene alkyl ether phosphate, Polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkyl ether carboxylates, alkyl sulfosuccinates, alkyl glycine salts and the like are preferred from the viewpoint of versatility because they are readily available as raw materials. Among these, phosphate ester salts such as alkyl phosphates and polyoxyalkylene alkyl ether phosphates are particularly preferable, and examples include those represented by the general formula (1).

(In the formula, A represents a linear or branched hydrocarbon group having 8 to 18 carbon atoms, m represents a number of 0 to 8, and X ¹ and X ² are the same or different and represent a hydrogen atom, an alkali (A counter ion by a metal, an alkyl-substituted ammonium having 2 to 3 carbon atoms, a hydroxyalkyl-substituted ammonium having 2 to 3 carbon atoms, or a basic amino acid)

  In the general formula (1), examples of the linear hydrocarbon group having 8 to 18 carbon atoms represented by A include a linear alkyl group or alkenyl group having 8 to 18 carbon atoms, and include an octyl group, a nonyl group, A linear alkyl group such as a decyl group, an undecyl group, a lauryl group, a tridecyl group, a myristyl group, a pentadecyl group, a palmityl group, and a stearyl group is preferable.

On the other hand, as the branched hydrocarbon group having 8 to 18 carbon atoms, a methyl branch represented by R—CH (CH ₃ ) CH ₂ — (wherein R represents a linear hydrocarbon group having 5 to 15 carbon atoms). Alkyl groups are preferred. Here, examples of R include linear alkyl groups or alkenyl groups having 5 to 15 carbon atoms, and in particular, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, lauryl group, and the like. The linear alkyl group is preferable. In addition to these methyl branched alkyl groups, alkyl groups having branched chains such as ethyl branch, propyl branch, butyl branch, pentyl branch and the like may be used.
A is particularly preferably a linear or branched alkyl group having 10 to 16 carbon atoms.

  m represents the number of repeating units of the oxyethylene group, and is a number of 0 to 8, preferably a number of 0 to 5 in terms of mass average, and particularly preferably a number of 0 to 3.

In the general formula (1), examples of the alkali metal represented by X ¹ and X ² include lithium, potassium, and sodium.
In addition, the alkyl-substituted ammonium having 2 to 3 carbon atoms or the hydroxyalkyl-substituted ammonium having 2 to 3 carbon atoms neutralizes the corresponding phosphoric acid in the production process of the phosphate ester represented by the general formula (1) or a salt thereof. Derived from the amine used. The corresponding amine is a primary, secondary or tertiary amine having a C2-C3 alkyl group or hydroxyalkyl group, such as diethyl monoethanolamine, ethyldiethanolamine, triethylamine, dipropylamine, dipropylmonoethanol. Examples include amine, propyldiethanolamine, propyldiethylamine, monoethanolamine, diethanolamine, triethanolamine, isopropyldiethylamine, isopropylethanolamine, and 2-amino-2-methyl-1-propanol.

  Examples of basic amino acids include arginine, lysine, histidine, ornithine and the like.

  Among these, as the salt of the general formula (1), those giving a potassium salt, sodium salt, triethanolamine salt and arginine salt are preferable, and potassium salt and sodium salt are particularly preferable.

Preferred examples of the phosphoric acid monoester or a salt thereof include sodium salt, potassium salt, triethanolamine salt, and arginine salt of phosphoric acid ester in which A is a linear or branched hydrocarbon group having 10 to 16 carbon atoms. Can be mentioned.
Further, in the general formula (1), X ¹ or X ² _{A- (OCH 2 CH 2) m} - may include phosphodiester or a salt thereof is a group.

  One or more anionic surfactants as the component (A) can be used, and the total composition contains 5 to 30% by mass, preferably 5 to 20% by mass. In such a range, a sufficient amount of foam and detergency can be obtained, and there is no stickiness during rinsing.

  The cationic polymer of component (B) used in the present invention is a component necessary for imparting excellent foam performance, rinsing properties and feeling of use. Examples of the cationic polymer include a homopolymer of dialkyl diallylammonium chloride, a copolymer of dialkyl diallylammonium chloride and acrylamide, cationized cellulose, and cationized guar gum.

  Examples of cationic polymers include Marquat 100 (dimethyldiallylammonium chloride homopolymer), Marcoat 550, Marquat 2000 (copolymer of dimethyldiallylammonium chloride and acrylamide) (Nalco); Commercially available products such as Jaguar C-17K (cationized guar gum, manufactured by Rhodia), Labor gum CG-M (cationized guar gum, manufactured by Dainippon Pharmaceutical) can be used.

  One or more kinds of the cationic polymer of the component (B) can be used, and 0.005 to 0.07 mass%, preferably 0.01 to 0.05 mass% is contained in the total composition. In such a relatively small amount range as compared with the prior art, the foam performance is improved, and there is no stickiness during rinsing. In other words, smooth bubbles can be obtained without creaking. If the amount of the cationic polymer used is too large, it will cause poor slimming and melting.

  In addition, the mass ratio of the component (A) and the component (B) is (B) / (A) = 1/6000 to 1/60, particularly 1/4000 to 1/70. It is preferable from the viewpoint of achieving both rinsing properties.

  The glyceryl ether of the component (C) is a component necessary for imparting excellent foam performance and meltability. As the glyceryl ether, those having a linear or branched alkyl group or alkenyl group having 4 to 18 carbon atoms are preferable, for example, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, Alkyl having 4 to 12 carbon atoms such as n-hexyl group, isohexyl group, n-heptyl group, n-octyl group, 2-ethylhexyl group, n-nonyl group, n-decyl group, 2-ethyloctyl group, lauryl group, etc. Those having a group are preferred.

  Specific examples of more preferable ones include glycerol mono-2-ethylhexyl ether, glycerol mono-2-ethyloctyl ether, glycerol monooctyl ether, glycerol monodecyl ether and the like.

  1 or more types can be used for the glyceryl ether of a component (C), and it is 0.5-10 mass% in the whole composition, Preferably it contains 1-8 mass%. In such a range, the foaming property is improved, and the feeling of squeak during rinsing is small, which is preferable.

  The mass ratio of the component (B) to the component (C) is (B) / (C) = 1/2000 to 1/5, particularly 1/1500 to 1/10. This is preferable.

  The skin cleansing composition of the present invention can further contain (D) an amphoteric surfactant, and can improve foam retention. Examples of the amphoteric surfactant include carbobetaine, sulfobetaine, imidazolinium betaine, amide betaine, and the like, and fatty acid amidopropyl betaine, hydroxypropyl sulfobetaine, and the like are preferable.

  One or more amphoteric surfactants of component (D) can be used, and 0.5 to 15% by mass, particularly 1 to 10% by mass in the total composition improves foam retention and rinses. It is preferable in that the time does not become slimy.

  The mass ratio of the component (B) and the component (D) is (B) / (D) = 1/3000 to 1/5, particularly 1/2000 to 1/10. It is preferable from the viewpoint of achieving both rinsing properties.

The skin cleansing composition of the present invention can further contain (E) an anionic polymer, and can be in the form of a highly viscous paste or gel. The composition in such a form is less likely to sag when picked up by the hand and has good usability.
As an anionic polymer, the polymer which has a carboxyl group and / or a sulfonic acid group in a structural unit is mentioned.

  A polymer having a carboxy group in the structural unit can be obtained by polymerizing a vinyl monomer having a carboxy group or a salt thereof. Examples of vinyl monomers having a carboxy group or a salt thereof include (meth) acrylic acid and salts thereof, styrene carboxylic acid and salts thereof, maleic monomers (maleic anhydride, maleic acid, maleic acid monoester, and maleic acid). Monoamide or a mixture thereof) and salts thereof, itaconic acid and salts thereof, and the like.

  A polymer having a sulfonic acid group or a salt thereof in the structural unit can be obtained by polymerizing a vinyl monomer having a sulfonic acid group or a salt thereof. Examples of the vinyl monomer having a sulfonic acid group or a salt thereof include styrene sulfonic acid or a salt thereof, 2-acrylamido-2-methylpropane sulfonic acid or a salt thereof, (meth) allyl sulfonic acid or a salt thereof, vinyl sulfonic acid or The salt etc. are mentioned.

  Examples of salts of these monomers include alkali metal salts, alkaline earth metal salts, ammonium salts, alkyl or alkenyl ammonium salts having 1 to 22 carbon atoms, alkyl or alkenyl substituted pyridinium salts having 1 to 22 carbon atoms, and 1 to 22 carbon atoms. Alkanol ammonium salts, basic amino acid salts and the like, and alkali metal salts such as sodium and potassium are preferred.

The anionic polymer may be a homopolymer of these monomers or a copolymer of two or more monomers, or may be a copolymer with a monomer other than these monomers.
As the anionic polymer, an acrylic acid / alkyl methacrylate copolymer is particularly preferable.

  As anionic polymers, for example, commercially available products such as Carbopol 940, 941 and 981, Carbopol ETD-2020, Pemulen TR-1 and TR-2 (above, manufactured by Noveon) should be used. Can do.

  One or more anionic polymers of the component (E) can be used, and 0.05 to 2% by mass, particularly 0.1 to 1% by mass in the total composition has an appropriate thickening effect. This is preferable because both melting and collapsing properties can be achieved.

  The skin cleansing composition of the present invention can further contain components used in ordinary cleaning compositions in addition to the above components. For example, moisturizers such as polyols; foaming agents; feel improvers; solvents such as ethanol; powders such as talc, cellulose, metal soap, pigments; preservatives, antioxidants, UV absorbers, UV protection agents, pearls Agents, chelating agents, fragrances, pigments, colorants, extracts, scrub agents, anti-acne agents and the like can be appropriately contained.

  The skin cleansing composition of the present invention has a pH of 4.5 to 6.5, particularly 5.0 to 6.5 when diluted to 5% by mass with purified water at 25 ° C. From the viewpoint of sex. In addition, in this invention, pH is measured at 25 degreeC using the pH meter for the aqueous solution which diluted the composition to 5 mass%.

  The pH of the skin cleansing composition may be adjusted to an inorganic acid such as hydrochloric acid, sulfuric acid, phosphoric acid, or the like; Acids; acidic amino acids such as glutamic acid and aspartic acid; hydroxides such as sodium hydroxide and potassium hydroxide; ammonia or aqueous ammonia; and pH adjusting agents such as basic amino acids such as arginine and lysine .

  The skin cleansing composition of the present invention can be produced by mixing the above-described components. For example, it can be used as a facial cleanser, whole body cleanser, makeup remover, and the like.

Examples 1-4, Comparative Examples 1-4
Skin cleansing composition having the composition shown in Table 1 and Table 2 manufactured in a conventional manner, and the skin after washing the skin, the smoothness of foam, smoothness of foam, no squeakiness at the time of rinsing The lack of feeling of squeezing was evaluated. The results are shown in Table 1 and Table 2 together.
In addition, pH of the composition measured the aqueous solution which diluted the composition to 5 mass% at 25 degreeC using the pH meter (Horiba Ltd. make, model number F-22).

(Evaluation methods)
When the face was cleaned with each skin cleansing composition by five professional panelists, the agent melts and melts, the foam is smooth, the skin is not squeezed, the skin is not sticky, and the skin is washed. The sensory evaluation was performed for the lack of feeling of tension, and the following criteria were used. The results were expressed as the average of the five evaluation points.

(1) Dissolvability of the agent:
5 points: Good.
3 points: Somewhat good.
1 point: bad

(2) Smoothness of foam:
5 points: Smooth.
3 points: Slightly smooth.
1 point: Not smooth.

(3) No squeak when rinsing:
5 points: There is no squeak.
3 points: Slightly squeaky.
1 point: There is a squeak.

(4) No sliminess:
5 points: No sliminess.
3 points: Somewhat slimy.
1 point: There is slippery.

(5) No skin tightness:
5 points: There is no tension.
3 points: There is a slight sense of tension.
1 point: There is a sense of tension.

Claims (6)

The following components (A), (B) and (C):
(A) 5-30% by mass of an anionic surfactant,
(B) Cationic polymer 0.005-0.07 mass%,
(C) Glyceryl ether 0.5-10 mass%
A skin cleanser composition comprising:   The skin cleansing composition according to claim 1, wherein the mass ratio of the component (B) to the component (C) is (B) / (C) = 1/2000 to 1/5.   The skin cleansing composition according to claim 1 or 2, wherein the mass ratio of the component (B) and the component (A) is (B) / (A) = 1/6000 to 1/60.   The skin cleanser composition according to any one of claims 1 to 3, further comprising (D) an amphoteric surfactant.   The skin cleansing composition according to claim 4, wherein the mass ratio of the component (B) to the component (D) is (B) / (D) = 1/3000 to 1/5.   Furthermore, the skin cleansing composition of any one of Claims 1-5 containing (E) anionic polymer.