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:
Oct. 22, 1996
Filed:
Jul. 13, 1994
Jean Cotteret, Verneuil-sur-Seine, FR;
Marie P Audousset, Levallois-Perret, FR;
Alain LaGrange, Coupvray, FR;
Jean J Vandenbosche, Sevran, FR;
L'Oreal, Paris, FR;
Abstract
The invention relates to a dyeing composition for keratinous fibres and in particular for human keratinous fibres such as hair, comprising, in a suitable media for dyeing, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## in which R is methyl, ethyl, .beta.-hydroxyethyl or .gamma.-hydroxypropyl, and their addition salts with an acid; and at least one para-phenylenediamine and/or one bis(phenylalkylenediamine) or one of their addition salts with an acid as oxidation dye precursor.