di or tri-sequenced polymer of ab, aba or bab structure, cosmetic composition and process of cosmetic treatment of keratin materials

摘要

The present invention relates to a diblock or triblock polymer of AB, ABA or BAB structure, comprising at least one block A which comprises isobutyl acrylate and acrylic acid. The invention also relates to a cosmetic composition comprising, in a cosmetically acceptable medium, at least one such polymer, and also to a treatment process using it.