METHODS AND COMPOSITIONS CONTAINING 4-AMINOPYRAZOLONES FOR THE DYEING OF HUMAN HAIR

• US 3,617,167 A
• Filed: 07/29/1966
• Issued: 11/02/1971
• Est. Priority Date: 08/05/1965
• Status: Expired due to Term

• Current Assignee: Karl-Josef Boosen, Peter Berth
• Original Assignee: Karl-Josef Boosen, Peter Berth
• Inventors: Berth, Peter, Boosen, Karl-Josef
• Primary Examiner(s): Meyers, Albert T.
• Assistant Examiner(s): Funderburk, Doris J.
• Application Number:
  US04/568,750
• Time in Patent Office: 1,922 Days
• Field of Search: 8/10.2 424/62 260/310
• US Class Current: 8/409
• CPC Class Codes: A61K 8/494 with more than one nitrogen as the only hetero atom
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair
• CPC Class Codes: C07D 231/48 with hydrocarbon radicals attached to said nitrogen atom

Abstract

WHEREIN R1 is a member selected from the group consisting of hydrogen, -CONH2, -COOH, -COOR'"'"''"'"', alkyl having 1 to 10 carbon atoms, phenyl and nicotinoyl; R'"'"''"'"' represents an alkyl having 1 to 4 carbon atoms; and R2 is a member selected from the group consisting of hydrogen, alkyl having 1 to 10 carbon atoms, phenyl and p-sulfonamidophenyl; and (b) a coupling component, said developer component compound being present in substantially equimolar to a slight excess with respect to said coupling component compound.

In the process of dyeing the living human hair which comprises treating the hair at a temperature of from 15* C. to 40* C. with an aqueous composition for dyeing human hair comprising an oxidation dyestuff and customary dyestuff adjuvants in the presence of an oxidizing agent, and thereafter rinsing the hair, the improvement which comprises utilizing as said oxidation dyestuff, from 0.1 percent to 5 percent by weight of an oxidation dyestuff combination of (a) a developer component compound having the formula

Claims

2. The process of claim 1 wherein said oxidative dyestuff combination is present in an amount of from 0.1 percent to 2 percent by weight.

3. In the process of dyeing living human hair which comprises treating the hair at a temperature of from 15* C. to 40* C. for a time sufficient to effect dyeing with an aqueous composition for dyeing human hair comprising an oxidation dyestuff and customary dyestuff adjuvants in the presence of a chemical oxidizing agent and thereafter rinsing the hair, the improvement which comprises utilizing as said oxidation dyestuff, from 0.1 percent to 5 percent by weight, based on the total aqueous composition, of an oxidation dyestuff combination of 4-aminopyrazolone-3-carboxylic acid amide hydrochloride and resorcinol in substantially equimolar amounts.

4. In the process of dyeing living human hair which comprises treating the hair at a temperature of from 15* C. to 40* C. for a time sufficient to effect dyeing with an aqueous composition for dyeing human hair comprising an oxidation dyestuff and customary dyestuff adjuvants in the presence of a chemical oxidizing agent and thereafter rinsing the hair, the improvement which comprises utilizing as said oxidation dyestuff, from 0.1 percent to 5 percent by weight, based on the total aqueous composition, of an oxidation dyestuff combination of 3-nicotinoyl-4-amino-pyrazolone hydrochloride and a-naphthol in substantially equimolar amounts.