Patent ID: 6554870
Filing Date: 2003-04-29
Classification: A61K,A61Q

Abstract:
An oxidation dye composition for keratin fibres, comprising, in a medium appropriate for dyeing,at least one oxidation dye precursor, at least one coupler, and at least one cationic or amphoteric substantive polymer; said at least one oxidation dye precursor being selected from para-phenylenediamines of formula (I): â€ƒin which m is an integer equal to zero, and n is an integer ranging from 1 to 4, or an acid addition salt thereof; and said at least one cationic or amphoteric substantive polymer, being selected from: (i) a copolymer of dimethyldiallylammonium chloride and acrylamide; (ii) a quaternary polyammonium polymer consisting of repeating units of formula (II): â€ƒwherein said polymer has a molecular weight, determined by gel permeation chromatography, which ranges from 9500 to 9900; (iii) a quaternary polyammonium polymer consisting of repeating units of formula (III): â€ƒwherein said polymer has a molecular weight, determined by gel permeation chromatography, which ranges from 1080 to 1320; (iv) a quaternary polyammonium polymer consisting of repeating units of formula (IV): â€ƒin which p represents an integer ranging from 1 to 6; D may be nonexistent or may represent a group (CH2)râ€”COâ€” in which r represents a number equal to 4 or 7, and wherein said polymer has a molecular weight, determined by gel permeation chromatography, of less than 100,000; or (v) a copolymer of diallyldimethylammonium chloride and acrylic acid.