JPH045212A - Cleansing composition - Google Patents

Abstract

PURPOSE:To obtain the subject one-phase type cleansing composition, containing a hydrophiic nonionic surfactant, a branched fatty acid, a water-soluble compound having hydroxyl groups, a liquid oil and water, excellent in feeling of use such as spread and slip in application to the skin and good in permeability into fine parts of the skin. CONSTITUTION:The subject composition containing 5-25 wt.% hydrophilic nonionic surfactant (e.g. a polyoxyalkylene alkyl ether), 1-10 wt.% compound (e.g. 2-propylundecanoic acid) expressed by the formula (R<1> and R<2> are H or 1-50C alkyl; p is an integer providing the total number of carbon atoms in the molecule with 14-60), 3-30 wt.% water-soluble compound (e.g. glycerol) having OH groups, 30-80 wt.% liquid oil (e.g. liquid paraffin) an 3-30 wt.% water. The aforementioned composition is a readily handleable gel or liquid form and can be massaged while maintaining smoothness without readily increasing the viscosity even if water is mixed from the outside therein. Furthermore, if water is added, oily ingredients are converted into oil-in-water type emulsified particles and readily removed together with dirt from the skin.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cleansing composition, and more particularly, it has good permeability into the skin details and excellent feeling of use, and is suitable for use in cleansing creams, pine surge creams, etc. The present invention relates to a cleansing composition useful as a cosmetic composition.

[Conventional technology]

There are cleansing cosmetics, pine surge cosmetics, etc. as cosmetics that apply oil components to the skin for the purpose of removing skin dirt and makeup cosmetics, or for the purpose of pine surges the skin, and these are applied to the skin and spread. , which is removed from the skin after its intended use has been fulfilled. These cosmetics are commercially available in the form of oils, creams of oil-in-water or water-in-oil emulsions, or gels of oil-in-surfactant emulsions.

However, these conventional cleansing cosmetics and pine surge cosmetics containing oil components have drawbacks such as being sticky when used and having poor storage stability.

Recently, as a technique for solving these drawbacks, cleansing cosmetics, pine surge cosmetics, etc. that utilize a liquid crystal structure made of a hydrophilic nonionic surfactant have been reported (Japanese Patent Publication No. 1-53845).

[Problem to be solved by the invention]

However, this liquid crystal type oil-based cosmetic is not suitable for use in humid conditions such as when sweating or in a bathroom, and the viscosity increases due to the incorporation of water, making it difficult to spread, which is not desirable.

For this reason, it spreads easily when applied to the skin, can be easily massaged, does not easily thicken due to contamination with moisture from the outside, and can be completely removed with water alone without tissue removal, making it easy to clean. It has been desired to develop a composition that can be used as a cleansing cosmetic, a pine surge cosmetic, etc., which is excellent and does not leave a sticky feeling when used.

[Means to solve the problem]

Under these circumstances, the present inventors have conducted intensive research to solve the above problems, and as a result, they have created Matusurge, an excellent cleansing cosmetic that satisfies the above requirements by using a hydrophilic nonionic surfactant and a specific branched fatty acid in combination. The inventors have discovered that a composition useful as a cosmetic, etc. can be obtained, and have completed the present invention.

That is, the present invention uses a hydrophilic nonionic surfactant, a carbon number 1
4 to 60 branched fatty acids, water-soluble compounds having hydroxyl groups,
A one-phase cleansing composition containing liquid oil and water is provided.

In the present invention, one-phase type refers to O/W emulsion or W
10 It refers to something that is not an emulsion but has a transparent or translucent appearance.

Examples of the hydrophilic nonionic surfactant used in the present invention include those having an HLB of 9 or more, and specifically, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, polyethylene Glycol fatty acid ester, ethylene oxide derivative of propylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, ethylene oxide derivative of mono- or polyglycerin fatty acid ester, ethylene oxide derivative of trimethylolpropane fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxy Polyoxyalkylene type nonionic surfactants such as ethylene hydrogenated castor oil fatty acid ester, polyoxyethylene hydrogenated castor oil pyroglutamic acid ester, polyoxyethylene glyceryl pyroglutamic acid ester; sucrose fatty acid esters; decyl glucoside, dodecyl glucoside, decyl poly Examples include alkyl glucosides such as glucoside and dodecyl polyglucoside; polyglycerin fatty acid esters; polyglycerin alkyl ethers.

These are nonionic surfactants whose hydrophobic groups, such as alkyl groups, phenyl groups, and fatty acid residues, have 8 to 36 carbon atoms. Among these, polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, etc. are particularly preferred. In addition, H.L.
B is the balance between hydrophilicity and lipophilicity, and in the present invention, the value calculated by the following formula by Oguchi and Dono et al. is used.

These may be used alone or in combination of two or more. The hydrophilic nonionic surfactant is preferably blended in an amount of 1 to 30% by weight (hereinafter simply expressed as %), particularly 5 to 25%, based on the total composition of the cleansing composition of the present invention. If it is less than 1%, the detergency and washability of the composition will be insufficient, and if it exceeds 30%, the composition may thicken or solidify, which is not preferable.

The branched fatty acid having 14 to 60 carbon atoms used in the present invention has the general formula (I) CH, -←C→7co○H (I) (in the formula, p R' and R2 may be the same or different). Often, each represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, at least one of which is an alkyl group having 1 to 50 carbon atoms. In addition, p represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.
Indicates an integer that is 0. ) is preferred.

The alkyl groups for R1 and R2 in the formula may be linear or branched, and include, for example, those shown below.

CH3, CHsCH2, CH3['H2['')I2.
CL(CL)3-1CH-(CH-)-, ('H-(
CH-) s, [”R3(['H-) 6C)1
3 (CH2)? -,CL(CH2L+-,['H3(C
H2)sCH3(C'H2)1o, ["R3(['H
2)+4. CH3([:R2)I--C)+3(C)
12>24, CH3(CH2)29, CL
([:LL<CL(CL)ss, [Hs(['H
z)44. CHz(CH2)4s-CH3 CH,CHCl(2['112C112CH2CH,[
:H2CH2-CH3CH3CH3CH3C2H3 CH3CCH2CI(,-,CH3CCH2CH-,,
CH3CCH2Cll-CH3C1 (3CH3C)1. CH.

C) 13ccH2cH[:)12CI (2-CH3 Examples of branched fatty acids (I) include 2-propylundecanoic acid, 2-ethyltridecanoic acid, 2-propyldodecanoic acid, 2-butylundecanoic acid, 2-pentyldecanoic acid. acid,
2-hexylnonanoic acid, 2-propyltridecanoic acid, 2
-butyldodecanoic acid, 2-pentylundecanoic acid, 2-
Hexyldecanoic acid, 2-butyltridecanoic acid, 2-pentyldododecanoic acid, 2-hexylundecanoic acid, 2-hebutyldecanoic acid, 2-pentyltridecanoic acid, 2-hexyldodecanoic acid, 2-hebutyldodecanoic acid , 2-hebutylundecanoic acid, 2-octyldecanoic acid, 2-octylundecanoic acid, 2-decyltetradecanoic acid, 2-decylpentadecanoic acid, etc., fatty acids obtained via Garpett reaction or aldol condensation, R' SR2 Methyl branched fatty acids in which one of them is a methyl group and the other is a hydrogen atom; 5.
7.7-) Hyperbranched fatty acids such as limethyl-2-(1,3,3-)limethylbutyl)octanoic acid, and the like. The branched fatty acid is preferably blended in an amount of 0.5 to 20%, particularly 1 to 10%, based on the total composition of the cleansing composition of the present invention. viscosity reduction if less than 0.5%;
It is not preferable because the improvement in spreadability, etc. is insufficient, and even if it is added in excess of 20%, the effect will not increase much.

Examples of water-soluble compounds having a hydroxyl group used in the present invention include propylene glycol, isoprene glycol (manufactured by Kuraray), 1,3-phthanediol, dipropylene glycol, glycerin, diglycerin, triglycerin, polyglycerin, and trimethylolpropane. , erythritol, pentaerythritol, sorbitan, sorbitol, glucose, maltitol, sucrose, trehalose, ethylene oxide or propylene oxide adducts of sugars or sugar derivatives, polyethylene glycol, ethanol, etc. In particular, glycerin, sorbitol, maltitol, poly Preferred are ethylene oxide adducts of sugar derivatives such as oxyethylene methyl glucoside, and ethanol.

These may be used alone or in combination of two or more. The amount of the water-soluble compound having a hydroxyl group varies depending on the feeling of use, consistency, etc. of the composition, but it is preferably blended in an amount of 1 to 50%, particularly 3 to 30%, based on the total composition of the cleansing composition of the present invention. .

Among these, ethylene oxide or propylene oxide adducts of sugar derivatives have the effect of eliminating the heat sensation, stickiness, etc. caused by oil and the like and significantly improving the feel during use. Particularly preferred is an adduct of methyl glucoside with 10 to 30 moles of ethylene oxide.

When an effect as a feel improver is expected, it is desirable that the compound be present in the cleansing composition in an amount of 1% or more.

The liquid oil used in the present invention may be one commonly used in cosmetics and the like. The liquid here refers to something that is liquid or paste at 25°C, and includes, for example, hydrocarbons, higher alcohols, higher alcohol higher fatty acid esters, animal and vegetable oils, cholesterol fatty acid esters, silicones, etc. Preferred examples include liquid paraffin, polyisobutyne, isostearyl cholesteryl ester, 2-ethylhexanoic acid triglyceride, hexadecyl 2-ethylhexanoate, octadecyl myristate, olive oil, and linear or cyclic methylpolysiloxane. These may be used alone or in combination of two or more.

The liquid oil is preferably blended in an amount of 1 to 90%, particularly 30 to 80%, based on the total composition of the cleansing composition of the present invention.

Further, the amount of water can be appropriately selected depending on the purpose of use of the cleansing composition of the present invention, required physical properties, etc., but it is preferably blended in an amount of 1 to 90%, particularly 3 to 30%, based on the total composition.

The cleansing composition of the present invention is produced by mixing the above-mentioned components in a composition that forms a gel and liquid state. Such a blending composition can be appropriately determined by a blending test of each component usually performed by experts in this field. The basic point that must be kept in mind when selecting the composition is to select the type and amount of the water-soluble compound and the mixing ratio that will maximize the association of surfactant molecules when forming the composition of the present invention. . In addition, its production is
Usually, each component is mixed and dissolved at a temperature above their melting points, and the mixture is cooled to around room temperature while stirring. The cleansing composition of the present invention is not an emulsified composition consisting of two phases, a dispersed phase and a continuous phase, but is in the form of a homogeneous gel or liquid having one phase.

The cleansing composition of the present invention further includes medicinal agents, moisturizing ingredients, anti-inflammatory agents, etc. commonly used in cosmetics, pharmaceuticals, etc.
Bactericidal agents, preservatives, ultraviolet absorbers, antioxidants, organic and inorganic powders, pigments, fragrances, and the like can be added as necessary. Furthermore, solid oil or semi-solid oil can be added within a range that does not impair the effects of the invention.

The cleansing composition of the present invention can be used for cleansing, pine surgery, etc., and is particularly preferably used as a face wash for removing makeup cosmetics.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Cleansing compositions shown in Table 1 below were prepared by the following method, and their appearance and spreadability were evaluated.

Regarding water resistance, hardness and spreadability were evaluated when used in the bathroom. The results are shown in Table 1.

(Manufacturing method) Each component in the table is heated and melted and mixed at 80°C. This is stirred and cooled to around room temperature to obtain each cleansing composition.

(Evaluation) Very good ◎ Good Average Poor △ × Below margins The product of the present invention spreads very well, has good pine surge properties, is light and has no stickiness, and has a good feeling of use. She was also good at sex.

Example 2 Cleansing Cosmetic: A cleansing cosmetic was prepared by heating, dissolving, mixing, and cooling all the components of the following composition.

(Composition) (%) Isostearic acid (Mitsubishi Yuka Co., Ltd.) 8.0 Purified Water Because it is in a balanced liquid state, dirt on the skin can be dispersed and dissolved, and after cleansing, it is easy to wash off with just water, making it easy to remove dirt. The removal ability was also extremely good.

Example 3 Cleansing Cosmetic: A cleansing cosmetic was prepared by heating, dissolving, mixing, and cooling all the components of the following composition.

(Composition) (%) Isostearic acid (Nissan Chemical) 6.0 Polyisobutyne (trimer) Glycerin Methylparaben Butylparaben Fragrance Ethanol 25.0 10.0 0.1 0.1 0.1 1.0 Polyisobutyne (trimer) ) 29.0 Sorbitol 11.0 Dibutylhydroxytoluene 0.1 Methylparaben
0.1 Butylparaben 0
．． 1 fragrance 0.1 ethanol 1.0 purified water
Balance Because it is in a gel state with low viscosity, it can disperse and dissolve dirt on the skin, and after cleansing, it can be washed away with just water, making it easy to use, and it also has an extremely excellent dirt removal ability.

Example 4 Pine surge cream: Pine surge cream was prepared by heating and dissolving all the components of the following composition, mixing and cooling operations.

(Composition) (%) Isostearic acid (Nissan Chemical) 6.0 Olive oil 53.0 Sorbitol 4.0 Jojoba oil
1.0 glycerin
6.0 dibutylhydroxytoluene
0.1 Methylparaben 0.1 Butylparaben 0.1 Fragrance
0.1 ethanol
1.0 Purified Water Balance Since it is in a gel state with low viscosity, it is able to disperse and dissolve dirt in the fine details of the skin, and it is easy to wash off with just water after pine surgery, and its dirt removal ability is also extremely good.

〔Effect of the invention〕

The cleansing composition of the present defense is in the form of an easy-to-handle gel or liquid, and has an excellent feeling of use such as spreading and slipping when applied to the skin, and has good penetration into the fine details of the skin. be.

In addition, it does not easily thicken even when moisture is mixed in from the outside, and can be applied to pine while maintaining a smooth feel during application. Furthermore, when water is added, the oil component becomes extremely fine oil-in-water emulsion particles and is easily removed from the skin along with makeup and other dirt, so no base component remains and it has excellent detergency and washability. , you can get a light feeling of use.

Claims (1)

[Claims] (1) A one-phase cleansing composition containing a hydrophilic nonionic surfactant, a branched fatty acid having 14 to 60 carbon atoms, a water-soluble compound having a hydroxyl group, liquid oil, and water.