Cosmetic use of copolymers with a rigid hydrophilic backbone...

Details Cosmetic use of copolymers with a rigid hydrophilic backbone... Cosmetic use of copolymers with a rigid hydrophilic backbone...

C - Chemistry, Metallurgy

08

L

C08L 51/00 (2006.01) C08F 290/06 (2006.01)

Patent

CA 2250097

The use of a graft copolymer in and for preparing cosmetic and dermatological compositions is disclosed. Said copolymer has a backbone (S) consisting of a hydrophilic copolymer with a glass transition temperature Tg above 25 ·C produced by free-radical polymerisation or polycondensation and comprising, on the chain of the backbone (S), at least one graft consisting of a hydrophobic macromonomer (M) with a glass transition temperature T'g below 25 ·C. Corresponding cosmetic or dermatological compositions are also disclosed.

La présente invention a pour objet l'utilisation dans et pour la préparation de compositions cosmétiques ou dermatologiques, d'un copolymère greffé dont le squelette (S) est constitué d'un copolymère hydrophile, de température de transition vitreuse Tg supérieure à 25 ~C, obtenu par polymérisation radicalaire ou par polycondensation et comportant sur la chaîne du squelette (S) au moins un greffon constitué d'un macromonomère (M) hydrophobe et de température de transition vitreuse T'g inférieure à 25 ~C ainsi que les compositions cosmétiques ou dermatologiques mises en oeuvre.

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