Patent ID: 6592633
Filing Date: 2003-07-15
Classification: A61K,A61Q

Abstract:
A composition for dyeing keratin fibers comprising:(i) at least one cationic direct dye chosen from cationic direct dyes of structures (I)1 to (I)77 below: and(ii) at least one polymer chosen from cationic and amphoteric substantive polymers chosen from: (1) dimethyldiallylammonium halide homopolymers and copolymers; (2) methacryloyloxyethyltrimethylammonium halide homopolymers and copolymers (3) polyquaternary ammonium polymers chosen from: polymers comprising repeating units corresponding to formula (II) below: polymers comprising repeating units corresponding to formula (III) below: polymers comprising repeating units corresponding to formula (IV) below: wherein p is chosen from integers ranging from about 1 to about 6,D is absent or is a â€”(CH2)rCOâ€” group, wherein r represents a number equal to 4 or 7; and (4) vinylpyrrolidone copolymers comprising units chosen from methacrylamidopropyltrimethylammonium units and methylvinylimidazolium units.