Patent · US Expired

Dyeing of keratin fibres with indolines using metal salts as catalysts

US5609650A · kind A · utility

8Cited by

6References

5Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Georg Knuebel · Goldkronach, DE
Horst Hoeffkes · Goldkronach, DE
Winifried Neuhaus · Goldkronach, DE
Edgar Lieske · Düsseldorf, DE

Key dates

Filing date	Jan 5, 1996
Grant date	Mar 11, 1997
Priority date	—
Expiry date	Jan 5, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/937
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An oxidation dye composition for keratin fibers containing component A and component B wherein component A is an oxidation dye precursor indoline derivative of the formula I: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 is hydrogen or an alkyl group having from 1 to 4 carbon atoms; each of R.sup.4 and R.sup.5 is hydrogen or an alkyl group having from 1 to 4 carbon atoms or together with the oxygen atom to which they are attached represent an alkylenedioxy group containing 1 to 4 carbon atoms; or a salt thereof; and wherein component B is a metal salt having a non-oxidizing anion selected from the group consisting of a lithium, magnesium, calcium, aluminum and a zinc salt.

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