Treatment Shampoo From Unilever
Published January 24, 2013
US Patent No. 8,298,519 B2; Conopco, Inc., Englewood Cliffs, NJ, has patented a hair treatment shampoo composition. It is comprised of an anionic surfactant selected from the group consisting of sodium lauryl sulphate, sodium lauryl ether sulphate, ammonium lauryl sulphate and ammonium lauryl ether sulphate; an amphoteric or zwitterionic cosurfactant; water; and a hair substantive polymer. The hair substantive polymer is comprised of a polymeric backbone bearing: at least one side chain which is formed from a hair fiber targeting group which is covalently linked to the polymeric backbone, the hair fiber targeting group being a non-cationic species which is capable of specifically interacting with the protein surface of the hair fiber in a non-covalent interaction having a bond energy ranging from 0.5 to 3 Kcal/mol, when the composition is applied to hair; wherein the hair fiber targeting group comprises a partial ester of poly(hydroxyethylacrylate) with 3,4-dihydroxybenzoic acid, a partial ester of poly(hydroxyethylmethacrylate) with 3,4-dihydroxybenzoic acid or mixtures thereof; and optionally, at least one side chain different from side chain and which different side chain comprises a hair benefit agent.
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