Patent · US Expired

Novel coupler components for oxidation hair dyes, the manufacture thereof, and hair colorants

US4314809A · kind A · utility

9Cited by

6References

6Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

David Rose · Hilden, DE
Peter Busch
Edgar Lieske · Düsseldorf, DE
Gunther Konrad · Hilden, DE

Key dates

Filing date	Nov 14, 1979
Grant date	Feb 9, 1982
Priority date	—
Expiry date	Nov 14, 1999

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/10
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

This invention is directed to novel bis-(2,4-diaminophenoxy)-alkanes and a method of preparing them. This invention is also directed to the use of said bis-(2-4-diaminophenoxy)-alkanes, or the salts thereof, as coupler components in developer-coupler oxidation hair dyeing compositions.

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