The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2013
Filed:
Sep. 07, 2010
Jonathan Wood, Weinheim, DE;
Dominic Pratt, Büttelborn, DE;
Anja Aechtner, Mannheim, DE;
Kristin Olsson, Ladenburg, DE;
Takeshi Iizaki, Tokyo, JP;
Jonathan Wood, Weinheim, DE;
Dominic Pratt, Büttelborn, DE;
Anja Aechtner, Mannheim, DE;
Kristin Olsson, Ladenburg, DE;
Takeshi Iizaki, Tokyo, JP;
KAO Germany GmbH, Darmstadt, DE;
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.