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. 19, 1991
Filed:
Dec. 05, 1988
Applicant:
Inventors:
Guenther Konrad, Hilden, DE;
Edgar Lieske, Duesseldorf, DE;
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
8409 ; 8408 ; 8411 ; 8416 ; 8423 ; 546304 ; 546307 ; 546311 ; 546329 ; 546334 ;
Abstract
Novel compounds with structures corresponding to the formula: ##STR1## in which n=0 or 1 and R.sup.1 is hydrogen, a C.sub.1 -C.sub.4 alkyl or hydroxyalkyl group, or an amino group, and salts of such compounds, are superior to previously known couplers for oxidation hair dyes to produce a variety of colors, especially reds, when used with standard developer components. With 2,4,5,6-tetraaminopyrimidine developer for example, these novel compounds produce red to brown hair colors and, with p-tolylenediamine developer, red to blue-violet hair colors.