L'oreal

Laurent Sabatie

Bertrand Lion

The invention relates to a cosmetic process for caring for or making up keratin materials, comprising the topical application to the keratin materials of a cosmetic composition comprising a phosphonic polymer derived from the polymerization of: (a) 45% to 95% by weight of ethylenic monomer bearing an at least Clinear or branched alkyl group; (b) 5% to 25% by weight of vinylphosphonic acid monomer; (c) 0 to 50% by weight of additional monomer chosen from linear or branched CCalkyl (meth)acrylates, C-Ccycloalkyl (meth)acrylates, and polydimethylsiloxanes bearing a mono(meth)acryloyloxy end group, optionally combined with an additional compound chosen from polyamine compounds bearing several primary amine and/or secondary amine groups, aminosilanes, salts of divalent or trivalent metal ions, clays and metal oxides. The process makes it possible to obtain a film-forming deposit that has good resistance to water, to oil and to sebum. The film is also non-tacky and transfer-resistant. The invention also relates to polymers containing the three monomers (a), (b) and (c).

Phosphonic ethylenic polymer and cosmetic uses thereof

The invention relates to a copolymer resulting from the polymerization of: (i) 70% to 95% by weight, of the total weight of the monomers, of isobornyl (meth)acrylate; (ii) 1% to 30% by weight of vinylphosphonic acid monomer; (iii) 0 to 20% by weight of an additional monomer. The invention also relates to a cosmetic composition comprising the copolymer and to a cosmetic process for caring for or making up keratin materials, comprising the topical application of the composition to the keratin materials. It also relates to the use of the copolymer as a skin-tensioning agent.

Growing community of inventors

Aulnay-sous-Bois, France

Laurent Sabatie