A cosmetic composition includes, in a physiologically acceptable medium, at least one statistical copolymer with a linear main chain of ethylenic nature, in which the copolymer: (i) has a weight-average molecular mass of between 15,000 and 600,000 g/mol, and has: (a) at least 70% by weight of “monomer units” derived from monomers for which the homopolymers are hydrophobic and have a glass transition temperature of greater than 40° C., (b) at least one “monomer unit” derived from an at least partially neutralized ionic hydrophilic monomer, (c) 0 to 25% by weight of “monomer units” derived from additional monomers for which the homopolymers have a glass transition temperature of less than 40° C., chosen from: the acrylates of formula:
CH
2
═CHCOOR
12
in which R
12
represents a linear or branched C
1
to C
12
alkyl group with the exception of a tert-butyl group, in which is (are) optionally intercalated one or more identical or different heteroatoms, the alkyl group also possibly being optionally substituted with one or more identical or different substituents chosen from hydroxyl groups and halogen atoms, and
the methacrylates of formula:
CH
2
═C(CH
3
)COOR
14
in which R
14
represents a linear C
4
to C
12
alkyl group or a branched C
5
to C
12
alkyl group, and
(ii) has an overall glass transition temperature of greater than or equal to 45° C.
一种化妆品组合物,包括在生理上可接受的介质中,至少含有一种具有
乙烯基性线性主链的统计共聚物,其中该共聚物:(i)具有15,000至600,000克/摩尔的重均分子量,并具有:(a)至少70%的重量来自于单体,其均聚物是亲
水性的且具有大于40°C的
玻璃转移温度,(b)至少一种来自于至少部分中和的离子亲
水性单体的“单体单元”,(c) 0至25%的重量来自于附加单体的“单体单元”,其均聚物的
玻璃转移温度小于40°C,所选单体为:公式为
CH2═CHCOOR12的
丙烯酸酯,其中R12表示线性或支链C1到C12烷基,除了叔丁基基团外,在其中可选地插入一个或多个相同或不同的杂原子,该烷基还可能被一个或多个相同或不同的取代基取代,所述取代基选择自羟基和卤素原子,以及公式为 ═C(
CH3)COOR14的
甲基丙烯酸酯,其中R14表示线性C4到C12烷基或支链C5到C12烷基,(ii)具有大于或等于45°C的总
玻璃转移温度。