Patent · US Active

Colouring composition for keratin fibres

US8523956B2 · kind B2 · utility

2Cited by

1References

14Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Jonathan Wood · Sudbury, US
Dominic Pratt · Darmstadt, DE
Anja Aechtner · Darmstadt, DE
Kristin Olsson · Ladenburg, DE
Takeshi Iizaki · Tokyo, JP

Key dates

Filing date	Sep 7, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Sep 7, 2030

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/4324
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Present invention relates to a coloring composition for keratin fibers especially for human hair with exceptionally improved color and shade stability. Accordingly, the first object of the present invention is a coloring composition for keratin fibres especially human hair comprising, in a cosmetically acceptable medium, at least one oxidative dyestuff precursor, 1,3-bis(2,4-diaminophenoxy) propane and/or its respective salts as a coupling agent and at least one direct dye. In an especially preferred from of the present invention the coloring compositions are substantially free from mono cyclic m-phenylenediamine coupling agent. With the term “mono cyclic m-phenylenediamine”, it is meant that the compound comprises only one cyclic group, preferably a benzene ring, in its molecule.

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