Linear ethylenic block copolymers useful in cosmetic compositions comprise two blocks with different glass transition temperatures and have defined mechanical properties

摘要

New linear ethylenic block copolymers comprising at least two blocks with different glass transition temperatures (Tg), at least one block having a Tg of at least 20 deg C, have a Young's modulus of 500-2000 MPa and/or a breaking deformation of 5-50% and/or a breaking deformation energy of 0.01-15 MJ/cm3. Independent claims are also included for: (1) a cosmetic composition containing a copolymer as above; (2) care of keratinic materials by applying the composition of (1).