Patent · US Expired

Hair dye preparation

US5114428A · kind A · utility

6Cited by

6References

20Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Horst Hoeffkes · Goldkronach, DE
Fritz Lange · Neumünster, DE
Dieter Schrader · Goldkronach, DE

Key dates

Filing date	Jan 14, 1991
Grant date	May 19, 1992
Priority date	—
Expiry date	Jan 14, 2011

Classification

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

Abstract

Liquid preparations for oxidation hair dyes, which contain soaps, water-soluble cationic polymers and hair dye intermediates in an aqueous or aqueous-alcoholic carrier, can be stabilized by amines corresponding to formula (C) ##STR1## in which R.sup.1 is a C.sub.8-22 alkyl group, PA0 R.sup.2 is hydrogen or a C.sub.8-22 alkyl group, PA0 R.sup.3 is hydrogen except when r=q=0 and then is C.sub.1-4 alkyl, and PA0 m, n, o, p, q and r are numbers of 0 to 6.

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