JPH01117813A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain an excellent cosmetic for hair and skin, having light touch, high adhesiveness and retaining power, providing natural appearance free from greasiness, containing an copolymer of a specific polyoxyalkylene derivative unit and a maleic acid unit. CONSTITUTION:A cosmetic containing a copolymer having the ratio of use of a polyoxyalkylene derivative shown by the formula [B is residue of compound having 2-8 OH groups; AO is 2-18C oxyalkylene; R<1> is 2-5C unsaturated hydrocarbon group or unsaturated acyl group; R<2> is 1-40C hydrocarbon group; a, b and c are 0-1,000 and sum of a, b and c is 1-3,000; l=1-8; m=0-2; n is 0-7; l+m+n=2-8 and m/(l+n)<=1/3] and a maleic acid unit selected from maleic anhydride, maleic acid, salt and ester thereof of 7:3-3:7 by equivalent ratio based on polymerizable double bond and 1,000-2,000,000 weight-average molecular weight.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to cosmetics, and particularly to cosmetics suitable for hair and skin cosmetics.

[Prior Art] Hair cosmetics and skin cosmetics include oil-soluble or poorly water-soluble polyalkylene gelicol derivatives, paraffin wax, synthetic esters, water-soluble cationic cellulose derivatives, vinylpyrrolidone/alkyl Various compounds are used, such as dialkylamino (meth)acrylate copolymers, unsaturated carboxylic acid (anhydride) derivatives/vinyl ether copolymers, etc. The purposes and forms of use of these ingredients vary depending on the type of cosmetic. However, in boat fishing, it is used to provide maintainability, moisture retention, adhesion, and affinity for the skin.

[Problem that the invention seeks to solve]

Recently, there has been a trend toward preference for hair cosmetics that are non-sticky and have a light feel, and although oil-based cosmetics have hair-styling properties, they are not necessarily optimal.

Furthermore, water-soluble copolymers and the like have strong adhesion and retention properties, so they give an unnatural appearance.

Cosmetics for the skin also have drawbacks such as a sticky feeling and difficulty in removing them after use.

The object of the present invention is to solve these problems by providing a cosmetic that is non-sticky, has a light feel, has a high degree of adhesion and holding power, and gives a natural appearance.

[Means for solving problems]

The present invention contains a copolymer of (i) a polyoxyalkylene derivative unit represented by the general formula [I] and (i) a maleic acid unit selected from maleic anhydride, maleic acid, salts and esters thereof. It is a cosmetic product that is characterized by:

(However, B is a residue of a compound having 2 to 8 hydroxyl groups,
AO is an oxyalkylene group having 2 to 18 carbon atoms, R1 is an unsaturated hydrocarbon group or unsaturated acyl group having 2 to 5 carbon atoms,
R2 is a hydrocarbon group having 1 to 40 carbon atoms, n=O to 100
0. b = O~1000, a = O~1000.
a + b + c = 1-3000, m = 1-8, m
=0-2, n=O-7. Q+m+n=2-8. m/(Q
+n)≦173. ) In the general formula [l], compounds having 2 to 8 hydroxyl groups with B as a residue include ethylene glycol, propylene glycol, butylene gelylcol, dodecylene glycol, octadecylene gelicol, neopentyl glycol, Styrene glycol, glycerin, diglycerin, polyglycerin, trimethylolethane, trimethylolpropane, 1,3.5-pentanetriol, erythritol, pentaerythritol, dipentaerythritol, sorbitol, sorbitan, sorbite, sorbitol glycerin condensate, adonitol, Polyhydric alcohols such as arabitol, xylitol, and mannitol; Polyhydric phenols such as catechol, resorcinol, hydroquinone, and phloroglucin; xylose, arabinose, ribose, rhamnose, glucose, fructose, galactose, mannose, sorbose, cellobiose, maltose, Sugars such as isomaltose, trehalose, sucrose, raffinose, gentianose, melezitose; partially etherified products and partially esterified products thereof.

The oxyalkylene group having 2 to 18 carbon atoms represented by AO includes oxyethylene group, oxypropylene group, oxybutylene group, oxytetramethylene group, oxystyrene group, oxyalkylene group, oxytetramethylene group,
There are decylene groups, oxyoctadecylene groups, etc., which may be used alone or as a mixed adduct of two or more types, and when two or more types are used, it may be a random adduct or a block adduct. You can.

Examples of the unsaturated hydrocarbon group or unsaturated acyl group having 2 to 5 carbon atoms represented by R1 include vinyl group, allyl group, methallyl group, 3-butenyl group, 4-pentenyl group, and 3-methyl-3-butenyl group. Some have polymerizable unsaturated bonds such as , acrylic group, methacrylic group, vinyl acetyl group, and crotonyl group.

The hydrocarbon group having 1 to 40 carbon atoms represented by R2 includes a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, and a tert-butyl group.

Amyl group, isoamyl group, hexyl group, heptyl group, 2
- ethylhexyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, isotridecyl group, tetradecyl group, hexadecyl group, isohexadecyl group, octadecyl group, isooctadecyl group, oleyl group, octyldodecyl group, tocosyl group, decyltetradecyl group,
benzyl group, cresyl group, butylphenyl group, dibutylphenyl group, octylphenyl group, nonylphenyl group,
Examples include dodecylphenyl group, dioctylphenyl group, dinonylphenyl group, styrenated phenyl group, and naphthyl group.

Salts of maleic acid include ammonia; methylamine;
Ethylamine, propylamine, butylamine, hexylamine, octylamine, 2-ethylhexylamine, nonylamine, decylamine, dodecylamine, isotridecylamine, tetradecylamine, hexadecylamine, isohexadecylamine, stearylamine,
Isostearylamine, oleylamine, linoleamine.

Monoamines such as octyldodecylamine, tocodylamine, decyltetradecylamine, aniline; ethylenediamine, tetramethylenediamine, dodecylpropylenediamine, octadecylpropylenediamine, oleylpropylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, etc. polyamine; monoethanolamine.

Alkanolamines such as jetanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, and alkylene oxide adducts of the above monoamines and diamines; Amino acids such as lysine, arginine, and histidine; Lithium There are salts of alkali metals such as , sodium and potassium; alkaline earth metals such as magnesium and calcium.

Maleic acid esters include methanol, ethanol, allyl alcohol, methallyl alcohol, propatool, isoproptool, butanol, isobutanol,
Tertiary butanol, pentanol, isopentanol, hexanol, heptatool, 2-ethylhexanol,
Octatool.

Nonanol, decanol, undecanol, dodecanol, isotridecanol, tetradecanol, hexadecanol, isocetyl alcohol, octadecanol,
There are esters of alcohols such as isostearyl alcohol, oleyl alcohol, octyldodecanol, docosanol, and decyltetradecanol.

The copolymer of the present invention is a copolymer of a polyoxyalkylene derivative unit represented by the general formula (I) and a maleic acid unit selected from maleic anhydride, maleic acid, salts and esters thereof, and Each of the derivative unit and the maleic acid unit may be used alone,
Moreover, two or more types may be copolymerized.

The ratio of polyoxyalkylene derivative units and maleic acid units used in the copolymer used in the present invention is not particularly limited, but the equivalent ratio based on the polymerizable double bond is 783 to 3, preferably approximately 1: 1 is preferred. The average molecular weight of the copolymer is also not particularly limited, but it is preferably 1,000 to 2,000,000 in terms of weight average molecular weight, and preferably 4 or more maleic acid units in one molecule of the copolymer.

At least one R1 must be contained in the unit represented by the general formula CI). The number of carbon atoms in R1 is related to polymerization reactivity, and if it is too long, the reactivity will be poor, so the above range is appropriate. When the number of R1 represented by Ω is 1, a linear copolymer can be obtained, and when it is 2 or more, a crosslinked copolymer can be obtained. In this case, by arbitrarily selecting the value of a, the degree of crosslinking can be adjusted and a copolymer in any form, from water-soluble to solid, can be obtained.

Regarding the relationship between Ω, m, and n, m should be in the range of O to 2, but if it is too large relative to (ffi + n), crosslinked ester will be generated during the reaction and gelation will occur. Unfavorable as it is difficult to adjust, therefore Ω, m,
The relationship of n needs to be m/(Q+n)≦173.

The number of carbon atoms in AO can be arbitrarily selected within the range of 2 to 18, but
In combination with R2, it can be made hydrophilic or lipophilic. Even if AO is only an oxyethylene group or a mixture, if the oxyethylene group is 25 mol% or more, it becomes hydrophilic, and if it is less than that, it becomes lipophilic if an oxyethylene group is used, or if it is another oxyalkylene group. become.

The copolymer used in the present invention is produced by copolymerizing the polyoxyalkylene derivative of general formula [I] with maleic anhydride, maleic acid, maleate, or maleic acid ester using a radical catalyst such as peroxide. However, when the maleic acid unit is maleic acid, its salt or ester, it can be obtained by copolymerizing the polyoxyalkylene derivative of general formula [1) and maleic anhydride using a radical catalyst. After that, it is preferable to esterify or hydrolyze and further convert this into a salt because a product with a high molecular weight can be obtained.

Further, during copolymerization, copolymerizable components such as styrene, α-olefin, and vinyl acetate may be mixed and copolymerized.

The copolymer used in the present invention is B, AOlRl, R2, α
, m and n can be changed from a water-soluble liquid to a poorly water-soluble solid, and can be used as cosmetics in various forms from aqueous solutions to powders. Furthermore, since a copolymer having surface activity can be obtained, it can also be used as an emulsifier. Furthermore, the more acid moieties there are in the copolymer, the better the affinity with keratin, giving a smooth feel to the skin and hair.

The cosmetic of the present invention contains the above copolymer,
The amount incorporated varies depending on the type of cosmetic, but - for boat fishing, 0.1 to 50% by weight, preferably 0.5 to 30% by weight.
It is effective enough in moderate amounts.

The purpose and form of use of the above copolymers differ depending on the type of cosmetics, but they are used as main ingredients or auxiliary agents, and are blended with other ingredients depending on the type and mixed to make cosmetics. Ru. In this case, the above copolymer can be used alone, but it can also be used in combination with other conventionally used cosmetic ingredients. In either case, it is generally used in combination with water, alcohol, or other liquid or solid diluents.

In addition to the above-mentioned components, various additives can be used in the cosmetic composition of the present invention. Examples of such additives include:
Coupling agents, plasticizers, emollients, thickeners, lubricants, film-forming resins, penetrating agents, buffering agents, anionic, cationic, amphoteric or nonionic surfactants, fragrances, dyes, preservatives, preservatives agents, propellants, bubble stabilizers, ultraviolet absorbers, softeners, gloss control agents, antistatic agents, moisture proofing agents, clarifying agents, evaporation accelerators, etc.

Types of cosmetics include hair spray, setting lotion, hair rinse, and hair treatment.

Hair cosmetics such as cold wave liquid, hair tonic, hair liquid, hair blow, pomade, hair cream, hair oil, hair pack, cleansing cream, lotion, cold cream, hand cream, etc.
Examples include skin cosmetics such as powder, foundation, mascara, eye shadow, and lotion.

〔Effect of the invention〕

Since the cosmetic of the present invention contains a copolymer of a copolymerizable polyoxyalkylene derivative unit and a maleic acid unit, it is non-sticky, has a light feel, has high adhesion and holding power, and has a natural It is an excellent cosmetic that gives a beautiful appearance.

〔Example〕

Examples of the present invention will be described below. In each example, the percentages are by weight and the average molecular weight is the weight average molecular weight.

Examples 1 to 12 (hair spray) Using the copolymers of Examples 1 to 12 and Comparative Examples 1 to 3 shown in Table 1, hair sprays were prepared according to the formulation shown below,
A sensory test was conducted on 10 men and 10 men between the ages of 15 and 55. The results are shown in Table 2, and it can be seen that the pair spray of the present invention is excellent.

Prescription (%) Copolymer shown in Table 1 3.0 Absolute ethanol 36.0 Dimethylpolysiloxane 0.62-methyl-2
-Amino-1-propatol 0.3 Trichloromonofluoromethane 30.0 Dichlorodifluoromethane 30.0 Fragrance
0.1 Example 13 (Pack) Prescription (%) A Purified water 64.0
Propylene glycol 5.0 Ethanol 5. OC sorbitan monolaurate 2.0 Squalane 5・OD Ethanol 3.0 Fragrance 0.5 Preservative Appropriate amount B to phase A
The phases were added and warmed to 60°C to dissolve.

Next, this was added to phase C which had been heated to 60°C and dissolved, and after cooling to room temperature while stirring, phase D was mixed to obtain a pack.

The resulting pack blended well with the skin, was easy to apply, and had good film-forming ability and releasability.

Example 14 (emollient lotion) formulation
(%) A Stearic acid 2.0
Cetyl alcohol 1.5 Vaseline 5.0 Liquid paraffin 10.0 Glycerin
3.5 Propylene glycol 5.0 Purified water
70. OC fragrance 0.5 Preservative, antioxidant Appropriate amount of phase B is heated and mixed, then heated and dissolved phase A is added, and then phase C is added.
The phases were added and mixed while heating to 70°C, homogeneously emulsified with a homomixer, and cooled to room temperature to obtain an emollient lotion.

The obtained emollient lotion blended well into the skin, was not sticky, and felt light.

Example 15 (cream foundation) formulation
(%) A Stearic acid 0.5
Squalane 11.0 Cetyl alcohol 1.5 Liquid paraffin 5.0 Isopropyl myristate 4. OB Triethanolamine 1.2 Propylene glycol 4.5 Purified water
53.3 Preservatives
Appropriate amount of C titanium oxide
8.0 talc
7.0 Kaolin 2
．． 0 Color pigment appropriate amount D
Fragrance: Appropriate amount: 8
After heating and dissolving at 0°C, pigment C was added and uniformly dispersed. Phase B heated and dissolved at 80°C was gradually added to emulsify it, and then cooled with stirring and heated to 50°C.
The cream foundation obtained by adding the fragrance and cooling it to room temperature while stirring was light and spreadable on the skin.

Example 16 (Cleansing Cream) Prescription (%) A Paraffin 5.
5 Cetyl alcohol 1.5 Vaseline 17.0 Liquid paraffin 28.0 Polyoxyethylene (5 mol) 3.0 Sorbitan monolaurate preservative Appropriate amount Propylene glycol 4.0 Glycerin
1.5 Purified water
36. OC fragrance 0.
5. Mix and heat dissolve phase A to 65°C, mix and heat phase B to 65°C, add phase B to phase A, stir, emulsify uniformly with a homomixer, cool, and dissolve at 50°C. Flavor C was added, and the mixture was cooled to room temperature while stirring.

The cleansing cream thus obtained spread well and had a smooth feel.

Agent: Patent attorney Sei Yanagi Hara

Claims (3)

[Claims] (1) Contains a copolymer of (i) a polyoxyalkylene derivative unit represented by the general formula [I] and (ii) a maleic acid unit selected from maleic anhydride, maleic acid, a salt thereof, and an ester. Cosmetics featuring: ▲There are mathematical formulas, chemical formulas, tables, etc.▼・・・[I] (However, B is the residue of a compound with 2 to 8 hydroxyl groups,
AO is an oxyalkylene group having 2 to 18 carbon atoms, R^1 is an unsaturated hydrocarbon group or unsaturated acyl group having 2 to 5 carbon atoms, R^2 is a hydrocarbon group having 1 to 40 carbon atoms, a=0 ~10
00, b=0-1000, c=0-1000, a+b+
c=1~3000, Q=1~8, m=0~2, n=0~
7, l+m+n=2-8, m/(l+n)≦1/3. ) (2) Claim 1, wherein the polyoxyalkylene derivative unit of general formula [I] and the maleic acid unit are in an equivalent ratio of 7:3 to 3:7 based on the polymerizable double bond. cosmetics. (3) The weight average molecular weight of the copolymer is 1,000 to 2,0
00,000, the cosmetic according to claim 1 or 2.