Patent · US Expired

Oxidation colorants comprising 2-(2,5-diaminophenyl)-ethanol compounds and 2-chloro-6-methyl-3-aminophenol compounds

US6284003A · kind A · utility

277Cited by

6References

9Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

David Rose · Hilden, DE
Horst Hoeffkes · Goldkronach, DE
Bernd Meinigke · Leverkusen, DE

Key dates

Filing date	May 19, 1997
Grant date	Sep 4, 2001
Priority date	—
Expiry date	May 19, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K8/415
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Oxidation dyes that contain a developer-coupler combination of 2-(2,5-diaminophenyl)-ethanol or its salt with an organic or inorganic acid and 2-chloro-6-methyl-3-aminophenol or its salt with an organic or inorganic acid are characterized by intensive blue finishes with high rubbing fastness.

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