Patent ID: 6926900

Claim:
An antidandruff composition for treating the hair and the scalp, comprising in a cosmetically acceptable medium, at least one pyridinethione salt, at least one insoluble conditioner, and at least one acrylic terpolymer containing, in amounts based on the total weight of monomers constituting the terpolymer: acrylate monomer (a), in amount of 5% to 80% by weight and selected from the group consisting of a C 1 -C 6 alkyl acrylate and a C 1 -C 6 alkyl methacrylate; monomer (b), in an amount of 5% to 80% by weight and selected from the group consisting of a heterocyclic vinyl compound containing at least one nitrogen or sulphur atom, a (meth)acrylamide, a mono- and di(C 1 -C 4 ) alkylamino (C 1 -C 4 ) alkyl (meth)acrylate, and a mono- and di (C 1 -C 4 ) alkylamino (C 1 -C 4 ) alkyl (meth)acrylamide; and monomer (c), in an amount of 0.1% to 30% by weight and selected from the group consisting of: i) a urethane produced by reaction between a monoethylenic unsaturated isocyanate and a nonionic surfactant comprising a block copolymer of 1,2-butylene oxide and of ethylene oxide with a C 1 - 4 alkoxy end; ii) a copolymerizable ethylenic unsaturated surfactant monomer obtained by condensation of a nonionic surfactant with an α,β-ethylenic unsaturated carboxylic acid or its anhydride; iii) an urea surfactant monomer produced by reacting a monoethylenic unsaturated monoisocyanate with a nonionic surfactant containing an amine function; iv) a (meth)allyl ether of formula CH 2 ═CR 1 CH 2 OA m B n A p R 2 in which R 1 denotes a hydrogen atom or a methyl group, A denotes a propylenoxy or butylenoxy group, B denotes ethylenoxy, n is equal to zero or denotes an integer less than or equal to 200, m and p denote zero or an integer less than n, and R 2 is a hydrophobic group of at least 8 carbon atoms; and (v) a nonionic urethane monomer produced by reacting a monohydric nonionic surfactant with a monoethylenic unsaturated isocyanate.