Abstract WHEREIN R can be hydrogen, -CH2CH2OH, -COCH3 or -CH2-CO-NH2. The oxidation dye to coupler ratio ranges between 10:1 and 1:4 and the composition has an alkaline pH. It is applied to the hair in the presence of an oxidizing agent for a period of about 5-30 minutes at a temperature of about 15*-40*C, after which the hair can be washed and dried. A composition for dyeing keratinic fibers, especially hair, containing an aqueous solution of an oxidation dye which can be either one having a phenyl nucleus substituted with two amino groups in para position relative to each other or one having a phenyl nucleus substituted with an amino group and a hydroxyl group in ortho or para position relative to each other, and as a coupler therefor a compound having the formula
The composition of claim 1 in which said oxidation dye is selected from the group consisting of paraphenylenediamine, paratolylenediamine, paraaminophenol, N-methyl-para-aminophenol, chloro-para-phenylenediamine, methoxy-para-phenylenediamine, 6-methoxy-3-methyl-paraphenylenediamine and (N-ethyl, N-carbamylmethyl)-paraphenylenediamine.
Claim 2
Dependent Claim
10 words
The composition of claim 1 which also contains nitroparaphenylene diamine.
Claim 3
Dependent Claim
13 words
The composition of claim 1 having a pH value between 8.5 and 10.
Claim 4
Independent Claim
101 words
A method for dyeing hair comprising impregnating said hair, in amounts effective to color said hair, for a period between 5-30 minutes at a temperature between 15*-40*C, with an aqueous solution having a pH between 8.5-10 of an oxidation dye selected from the group consisting of (1) a dye having a phenyl nucleus substituted with two amino groups in para position relative to each other and (2) a dye having a phenyl nucleus substituted with an amino group and a hydroxyl group in ortho or para position relative to each other, and as a coupler therefor a compound having the formula
Claim 5
Dependent Claim
21 words
The method of claim 5 which includes the steps of washing and drying the hair after said 5 to 30 minutes.
Claim 6
Dependent Claim
16 words
The method of claim 5 wherein said hydrogen peroxide is 6 percent aqueous hydrogen peroxide solution.