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Abstract

A hair-conditioning resin composition prepared by modifying a copolymer resin with a zwitterionizing agent is described, said copolymer resin being prepared by copolymerizing in a hydrophilic solvent a polymerizable mixture containing (A) 65-90% by weight of a polymerizable vinyl monomer having the general formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group, R.sub.2 represents an alkylene group having from 1 to 4 carbon atoms, R.sub.3 and R.sub.4 each represents an alkyl group having from 1 to 4 carbon atoms, and A represents an oxygen atom or an NH group, (B) 10-35% by weight of polymerizable vinyl monomers having the general formula (II) ##STR2## wherein R.sub.5 represents a hydrogen atom or a methyl group, and R.sub.6 represents a saturated or unsaturated alkyl group having from 12 to 24 carbon atoms, and (C) 0-25% by weight of other polymerizable vinyl monomers, said zwitterionizing agent having the general formula (III) XR.sub.7 COOB (III) wherein R.sub.7 represents an alkylene group having from 1 to 4 carbon atoms, X represents a bromine, chlorine or iodine atom, and B represents an alkali metal ion, an ammonium salt or an amine salt. The hair-conditioning resin compositions of the present invention have satisfactory cosmetic properties such as voluminousness, combing-out, softening, moderately moistening, and wavesetting.

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First Claim