Cosmetic preparation providing good resistance and containing a copolymer with structural unit of acid, process of its preparation and use

摘要

Cosmetic composition comprises a film-forming polymer (I) where: (a) the material is formed by drying an aqueous or alcoholic solution of (I) at ambient temperature and (b) (I) comprises at least one unsaturated acid monomer having an acid number above 82. Cosmetic composition comprises a film-forming polymer (I) where: (a) the material formed by drying an aqueous or alcoholic solution of (I) at ambient temperature and 50% relative humidity has a breaking elongation of at least 160%, an instantaneous recovery of 25-70% after 150% elongation and a 300-second recovery of 30-100% after 150% elongation; and (b) (I) comprises at least one unsaturated acid monomer having an acid number above 82. Independent claims are also included for the following: (1) an aerosol device containing the composition; (2) a process for producing a film-forming polymer comprising 10-50 wt.% hydrophilic monomer units, 20-50 wt.% hard monomer units and 30-70 wt.% soft monomer units, comprising polymerizing the hydrophilic monomer(s) and polymerizing the product with a mixture of the hard and soft monomers, polymerization being effected in an alcohol or aqueous alcohol solvent at 60-90 degrees C in the presence of a radical initiator; (3) a film-forming polymer produced by the process of (2); (4) a cosmetic composition comprising the polymer of (3).