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:
Oct. 04, 2011
Filed:
Mar. 26, 2008
Bernd Noecker, Ober-Ramstadt, DE;
Jonathan Wood, Weinheim, DE;
Ruediger Wilz, Pfungstadt, DE;
Frank Kufner, Darmstadt, DE;
Bernd Noecker, Ober-Ramstadt, DE;
Jonathan Wood, Weinheim, DE;
Ruediger Wilz, Pfungstadt, DE;
Frank Kufner, Darmstadt, DE;
KPSS-KAO Professional Salon Services GmbH, Darmstadt, DE;
Abstract
This invention relates to a hair dyeing composition comprising at least one anionic and at least one cationic direct acting hair dyes and showing excellent dyeing ability and excellent resistance to hair washing and environmental influences. The coloring composition of this invention are ready to use coloring composition and, therefore, do not require any mixing prior to application with additional agents such as oxidizers. According to the invention the preferred cationic dyestuffs are selected from the following structures wherein R, R, Rand Rstand for hydrogen, a CH— or CH— group, and Y is an anion such as chloride, bromide, methosulfate.