Patent · US Expired

Aminophenyl alkylenediamines useful in oxidation hair dyes

US4842612A · kind A · utility

6Cited by

10References

25Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

David Rose · Hilden, DE
Edgar Lieske · Düsseldorf, DE
Norbert Maak · Neuss, DE

Key dates

Filing date	Mar 23, 1988
Grant date	Jun 27, 1989
Priority date	—
Expiry date	Mar 23, 2008

Classification

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

Abstract

N-4-aminophenyl-N'-2,4-diaminophenyl alkylenediamines corresponding to the formula ##STR1## and water-soluble salts thereof. The above compounds are suitable as developers in oxidation hair dyes. Such hair dyes contain compounds corresponding to formula (I) or salts thereof as developer component in addition to conventional developer and conventional coupler components and, optionally, conventional substantive hair dyes in a cosmetic carrier. In conjunction with phenols, naphthols, resorcinols and 1,3-bis-(2,4-diaminophenyl)-alkanes or 1,3-bis-(2,4-diaminophenoxy)-alkanes as couplers, the new developers give particularly intensive colors with good light fastness properties.

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