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:
Jan. 07, 1992
Filed:
Feb. 08, 1991
Applicant:
Inventors:
Mustafa Akram, Hamburg, DE;
Wolfgang Schlenther, Hamburg, DE;
Assignee:
Hans Schwarzkopf GmbH, Hamburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8405 ; 8406 ; 8408 ; 8409 ; 8412 ; 8414 ; 8416 ; 8425 ; 8435 ; 424 70 ;
Abstract
Compounds of formula I are disclosed: ##STR1## and their salts with inorganic and organic acids, wherein either X denotes H and Y denote OR or HNR, or X denotes OR or NHR and Y denotes H, and R represents hydroxy(C.sub.2 -C.sub.3) alkyl, 2,3-dihydroxypropyl, methoxy(c.sub.2 -C.sub.3) alkyl, tetrahydrofurylmethyl or tetrahydropyrylmethyl. Processes are described for the preparation of compounds of formula I as well as aqueous coloring agents for keratin fibers, such as fur and human hair, containing at least one compound of formula I as the coupler and at least one developing component, as well as customary additives and auxiliaries.