Gels based on vinyl ether-maleic anhydride copolymer neutralized by a basic amino acid
AssigneeSociete Anonyme dite: L'Oreal
InventorsConstantin Koulbanis, Arlette Zabotto, Jean-Claude Contamin
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Abstract
A gel comprises an aqueous solution of a vinyl ether-maleic anhydride copolymer and at least one amino acid having a basic character present in an amount effective to impart to said solution a pH ranging between 3 and 9. The gel is employed as a carrier in cosmetic compositions.
Claims10
A gel comprising an aqueous solution of a vinyl ether-maleic anhydride copolymer, a 0.5-5 weight percent aqueous solution of said copolymer having a viscosity ranging between 1 and 1000 poises measured at 25.degree. C and at a pH of 7, said copolymer having a repeating unit of the formula ##STR3## wherein R is alkyl having from 1-4 carbon atoms, and at least one amino acid having a basic character, said copolymer being present in an amount such that the viscosity of said gel is between 10 and 100 poises and said amino acid being present in an amount effective to impart to said solution a pH ranging between 3 and 9.
Dependencies are inferred from the claim text.