Patent · US Expired

Oxidation hair dye composition based on 4,5-diaminopyrazole and m-phenylenediamine derivatives

US5718731A · kind A · utility

34Cited by

7References

7Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Isolde Loewe · Bensheim, DE
Alexa Weinges · Heidelberg, DE
Wolfgang Balzer · Alsbach, DE
Stefan Gerstung · Reinheim, DE

Key dates

Filing date	Aug 13, 1996
Grant date	Feb 17, 1998
Priority date	—
Expiry date	Aug 13, 2016

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06P1/32
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The oxidation hair dye composition contains from 0.01 to 4.0 percent by weight of a developer substance including at least one diaminopyrazole of the formula (I) ##STR1## wherein R.sup.1 is selected from the group consisting of hydrogen, an alkyl group having from 1 to 6 carbon atoms, a hydroxyalkyl group having from 2 to 4 carbon atoms and a substituted or unsubstituted benzyl group, and R.sup.2 and R.sup.3, independently, are each selected from the group consisting of hydrogen, an alkyl group having from 1 to 6 carbon atoms and a hydroxyalkyl group having from 2 to 4 carbon atoms; and from 0.01 to 4.0 percent by weight of a coupler substance including at least one m-phenylenediamine selected from the group consisting of N-(3-dimethylamino)phenyl urea and 3-(N-methylsulfonyl)amino-N,N-dimethylaniline.

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