BLOCK ETHYLENIC COPOLYMERS COMPRISING A VINYLLACTAM BLOCK, COSMETIC COMPOSITIONS CONTAINING THEM AND COSMETIC USE OF THESE COPOLYMERS

摘要

Linear block ethylenic copolymer comprising: at least one block A derived from monomers comprising from 52 to 100 % by weight of an ethylenic monomer containing a lactam ring corresponding to formula (I) below: and at least one block B derived from monomers not comprising an ethylenic monomer containing a lactam ring of formula (I), or comprising a minor proportion thereof, the at least one block B having a glass transition temperature Tg ranging from −55° C. to +55° C. Compositions and processes using the compound are also disclosed.