| 摘要 |
Cosmetic composition (A) for treating keratin fibers, especially human hair, comprises, in a medium, at least one terpolymer (I); at least one fixing polymer (II) and at least one polyol (III). Cosmetic composition (A) for treating keratin fibers, especially human hair, comprises, in a medium, at least one terpolymer (I); at least one fixing polymer (II) and at least one polyol (III). (I) comprises at least one each of alpha ,beta -monoethylenically unsaturated carboxylic acid (Ia); ester (Ib) of (Ia), and ester (Ic) of (Ia) with an alkoxylated fatty alcohol (IV). (II) is a nonionic homopolymer (IIa) having weight ratio (expressed in percentage of total composition) of (I):(IIa) at least 0.2, or an anionic polymer (IIb). When (IIb) is used, enough (I) is present to provide viscosity over 50 mPa.s at 25[deg]C and shear rate 1 s->1>, and when (IIa) is used, (III) is other than (IIa) and the ratio (expressed in percentage of total composition) of (I):polyol is less than 1. POLYMERS - Preferred Materials: In (I), (Ia) has 3-10C; (Ib) is prepared from a 3-10C alcohol and (IV) contains 10-26C. Most preferred is a copolymer of methacrylic acid; ethyl acrylate and polyalkoxy-stearyl methacrylate, with molecular weight 500-20 million, preferably 0.4-0.8 million. (IIa) is e.g. a homopolymer of vinyl acetate, vinyl alcohol, styrene, vinyl lactam or alkyl (meth)acrylate, or a poly(alkyloxazoline), preferably with molecular weight over 350. (IIb) is derived from a carboxylic, sulfonic or phosphonic acid and has molecular weight 500-5 million; typical example are acrylic acid/ethyl acrylate/N-tert-butylacrylamide; methacrylic acid/ethyl acrylate; anionic polyurethanes and sulfonated polyesters. Preferred Composition: (I) is 0.05-20, especially 0.2-10, wt.% of total composition; (IIa) and/or (IIb) is 0.1-30, preferably 0.5-10, wt.% and (III) is 0.1-30, preferably 1-15, wt.%. (A) may also include a silicone; additional fixing polymers and a viscosity modifier, especially to provide viscosity 500-50000 cP.s at 25[deg]C and shear rate 1 s->1>; additional optional ingredients include surfactants; emulsifiers; antifoams; emollients, sunscreens etc. ORGANIC CHEMISTRY - Preferred Polyols: These have formula R'1R'2-C(OH)-Am-C(OH)-R'3R'4 and typical compounds are glycerol; pinacol; 1,3-butandiol; hexylene glycol and 3-methyl-1,5-pentanediol. R'1-R'4 each : H or 1-6C (hydroxy)alkyl; A : linear or branched 1-18C alkylene, including up to 9 O atoms but no hydroxy groups; m : 0 or 1. |
