Patent · US Expired

Substituted 2-alkylamino-4-amino-1-alkylbenzene compounds and oxidation hair dye compositions based on said compounds

US5645610A · kind A · utility

6Cited by

6References

7Claims

0Family size

Inventors

Wolfgang Balzer · Alsbach, DE
Anke Frank · Frankfurt, DE
Alexa Weinges · Heidelberg, DE

Key dates

Filing date	May 26, 1995
Grant date	Jul 8, 1997
Priority date	—
Expiry date	May 26, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C217/84
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The new coupler compounds of the invention are 4-amino-2 -(2'-hydroxyethyl)-amino-5-methoxytoluene and/or 4-amino-2-(2'-hydroxyethyl)amino-5-chlorotoluene. The invention also includes an oxidation hair dye composition including an effective amount, advantageously from 0.01 to 5 percent by weight, of the above-mentioned new coupler compounds together with one or more known developer compounds and optionally certain direct dyes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.