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. 06, 2004
Filed:
Mar. 08, 1999
Florence Laurent, Asnieres, FR;
Roland De La Mettrie, Le Vesinet, FR;
L'Oreal S.A., Paris, FR;
Abstract
The invention relates to an oxidation dyeing process for human keratin fibers, which comprises applying to the fibers a dye composition (A) containing, in a medium which is suitable for dyeing, at least one oxidation dye precursor and optionally one or more couplers; developing the color in alkaline, neutral or acidic medium using an oxidizing composition (B) containing an oxidizing agent, at least one of the compositions (A) and (B) also containing an effective amount of at least one cationic amphiphilic polymer chosen from quaternized celluloses modified with groups containing at least one fatty chain, chosen from alkyl, arylalkyl and alkylaryl groups containing at least 8 carbon atoms, or mixtures thereof, and quaternized hydroxyethylcelluloses modified with groups containing at least one fatty chain, chosen from alkyl, arylalkyl and alkylaryl groups containing at least 8 carbon atoms, or mixtures thereof; the compositions (A) and (B) being mixed together immediately before use or applied one after the other to the keratin fibers.