Patent ID: 7205271
Filing Date: 2007-04-17
Classification: A61K,A61Q

Abstract:
1. A rheology modifier/hair styling resin consisting of a crosslinked, linear poly(vinyl amide/polymerizable carboxylic acid) copolymer having a composition, by weight, of 25–75% of a vinyl amide monomer selected from vinyl pyrrolidone. vinyl caprolactam, N-vinyl formamide, N-vinyl-acetamide, N-vinyl-N-methylacetamide and mixtures thereof, and 25–75% of a polymerizable carboxylic acid monomer selected from (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid and mixtures thereof, and a crosslinker in an amount of 0.5–2%. based on weight of total monomers, which is characterized by an aqueous solution having a viscosity of 55,000 cps at a pH of 9 (Brookfield RVT, T-bar C@ 10 RPM, 60 sec., 1% resin solids in water).