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:
Dec. 25, 1990
Filed:
Apr. 04, 1989
Applicant:
Inventors:
Yuh-Guo Pan, Stamford, CT (US);
Lana Hochman, Westport, CT (US);
Assignee:
Clairol Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
424 70 ; 558418 ;
Abstract
The novel dye compound ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different except that R.sub.1 and R.sub.2 are not simultaneously hydrogen, are hydrogen, alkyl, hydroxyalkyl polyhydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl and amino alkyl, the alkyl group and the alkoxy group having from 1 to 6 carbons, and R.sub.3 is a compatible substituent group, for example, hydrogen, alkyl, hydroxy hydroxyalkyl and halogen. The dye compound is especially useful in hair dye compositions containing same.