AQUEOUS ALKALINE HAIR DYE COMPOSITIONS

摘要

1447783 Hair dyeing BRISTOL MYERS CO 23 Nov 1973 [24 Nov 1972] 54470/73 Heading D1B Hair dyeing compositions are prepared by mixing in water a dye which is N1, N4, N4-tris (21-hydroxyethyl)-2-nitro-p-phenylenediamine in a concentration adequate to colour the hair with at least one aminohydroxy alkailne agent of formula (I) in which R1 and R2 are hydrogen, hydroxyethyl or hydroxypropyl group, R3 and R4 are hydrogen or C 1 to C 3 alkyl groups, or C 1 to C 3 mono hydroxyalkyl groups, providing that both R3 and R4 are hydrogen only when either R1 or R2 is hydroxyethyl or hydroxyisopropyl, R5 is hydrogen or a methyl group, there being sufficient alkaline agent present to produce an alkaline pH. Preferably there is 0.001 to 10% by weight based on the composition of dye and the pH is 7 to 11.5, the alkaline agent being diethanolamine, triethanolamine, 2-amino-2- methyl-1-propanol tris (hydroxymethyl) aminomethane, 2-amino-2-methyl-1, 3-propanediol, diisopropanolamine, and trisisopropanolamine, optionally additional solvents, surfactants, thickeners and antioxidants. The compositions may be used in the form of an aqueous emulsion, aerosol compositions, aqueous gels, creams, and lotions.