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:
Nov. 16, 1999
Filed:
Jun. 04, 1997
Applicant:
Inventors:
Alain Lagrange, Coupvray, FR;
Jean Jacques Vandenbosche, Sevran, FR;
Jean Cotteret, Verneuil-sur-Seine, FR;
Marie Pascale Audousset, Levallois-Perret, FR;
Assignee:
L'oreal, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ;
U.S. Cl.
CPC ...
8412 ; 8406 ; 8407 ; 8408 ; 8421 ; 558418 ; 558423 ;
Abstract
A method or composition for dyeing keratinous fibres using as an oxidation dye precursor a 3-substituted para-aminophenol of formula: ##STR1## where R.sub.1 represents alkyl, alkenyl, mono- or polyhydroxyalkyl, cyano, cyanoalkyl, halogenoalkyl, aminoalkyl or alkoxyalkyl and R.sub.2 represents hydrogen, alkyl or mono- or polyhydroxyalkyl, provided that when R.sub.2 is hydrogen R.sub.1 is not methyl or trifluoromethyl, and addition salts thereof with an acid.