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:
Aug. 12, 1986
Filed:
Apr. 19, 1985
Applicant:
Inventors:
Masashi Kikuchi, Yokohama, JP;
Masahiro Matsuoka, Yokohama, JP;
Assignee:
Shiseido Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ;
U.S. Cl.
CPC ...
8426 ; 8405 ; 8406 ; 8421 ; 8650 ; 8651 ; 8653 ; 564428 ;
Abstract
A naphthalene derivative having the general formula: ##STR1## wherein R represents hydrogen, an alkyl group having 1 to 8 carbon atoms, an R.sup.1 O (CH.sub.2).sub.n group, or a benzyl group, R.sup.1 represents hydrogen or a lower alkyl group, and n represents an integer of 2 or 3. This compound in the leuco state can be stably isolated and can produce a strong and fast color upon oxidation under moderate conditions. This compound can be advantageously included in a hair dye composition, which is capable of stably and safely dyeing hair with a good and stable color under moderate conditions.