| abstract |
au moins une séquence A susceptiblend'être préparée à partir de monomères, constitués ennmajorité d'un monomère éthylénique à cycle lactame, n et en minorité d'au moins un monomère nonnhydrophile ; et au moins une séquence B susceptiblend'être préparée à partir de monomères ne comportant pasnde monomère éthylénique à cycle lactame ou comportantnune proportion minoritaire de celui-ci. An ethylenic, sequenced, linear copolymer comprising: at least one A-block capable of being prepared from monomers, mainly consisting of a lactam-containing ethylenic monomer, and in the minority of at least one non-hydrophilic monomer; and at least one B-block capable of being prepared from monomers that do not comprise a lactam-containing ethylenic monomer or that contain a minor proportion thereof. n n n Cosmetic or pharmaceutical compositionnparticular hair composition comprising saidncopolymer.n n n Cosmetic makeup or care processnkeratin materials including the application onnthe keratin materials of such a composition.n n n Use of copolymers to improventhe styling power and / or the holding of the hairstyle, withoutnsticky, especially to the touch, of a lacquer fornhair ; use of the copolymers to improventhe adhesion and the resistance to wear, without stickiness,nespecially the touch of a nail polish; usencopolymers to improve the performance of anmakeup composition; use of copolymersnto reduce the stickiness, especially to the touch, of ancosmetic composition, in particular innconditions of high humidity for example for RH ofn50% to 100%; use of the copolymers in ancosmetic composition such as a care compositionnor makeup to mask wrinkles, which gives thenskin a smooth appearance, without tugging. |