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. 08, 1992
Filed:
Apr. 20, 1990
Applicant:
Inventors:
Thomas Clausen, Alsbach, DE;
Eugen Konrad, Darmstadt, DE;
Assignee:
Wella Aktiengesellschaft, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
8409 ; 8423 ; 8407 ; 8405 ; 546307 ; 546311 ;
Abstract
A composition for dyeing hair containing 2,5-diamino-6-nitropyridine, a solvent which is preferably water, a surfactant and at least one cosmetic additive selected from the group consisting of thickeners; care agents; perfume oils; complexing agents; oxidation hair dyes; and direct hair dyes; preservatives; a pH-adjusting member selected from the group consisting of ammonia, monoethanol amine and triethanol amine; and a polymer selected from the group consisting of chitosan derivatives, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, polyacrylonitrile, polyvinyl lactam and copolymers thereof.