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:
Feb. 07, 2012
Filed:
Jun. 20, 2011
Carolin Welz, Hamburg, DE;
Hartmut Manneck, Klein Wesenberg, DE;
Astrid Kleen, Hamburg, DE;
Mustafa Akram, Hamburg, DE;
Carolin Welz, Hamburg, DE;
Hartmut Manneck, Klein Wesenberg, DE;
Astrid Kleen, Hamburg, DE;
Mustafa Akram, Hamburg, DE;
Henkel AG & Co. KGaA, Duesseldorf, DE;
Abstract
Agents for coloring keratin-containing fibers, in particular human hair, that contain encased oxidation dye precursor products. More-uniform coloring, which is independent of which strands are wetted first or last with the coloring product, is thereby ensured. The casing of the oxidation dye precursor products is made up of an encapsulating material made of methacrylic-acid, methacrylic acid-ester, or vinyl-acetate homo- or copolymers, or shellac, as well as at least one release agent. Contact time is equalized over time and shortened overall, resulting in a reduction in hair damage due to excessively long contact times. A method for manufacturing coloring agents for keratinic fibers, containing coated particles is also provided.