Patent ID: 7959906

Claim:
A hair-cosmetic composition comprising, in a cosmetically acceptable medium, film-forming gradient copolymer containing from 5 to 25 percent by weight of a methacrylic acid monomeric residue, from 50 to 90 percent by weight of an ethyl acrylate monomeric residue, and 5 to 25 percent by weight of a styrene monomeric residue, wherein the film-forming gradient copolymer exhibits a mass polydispersity index (Ip) less than or equal to 2.5, and wherein the composition is able to form a film that has at least one of the following characteristics: a strain at break ε r ranging from 5% to 2500%, and/or a Young's modulus ranging from 0.5 to 1200 MPa, and/or an instantaneous elastic recovery ε i greater than or equal to 10%.