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:
Jul. 31, 2007
Filed:
Nov. 29, 2001
Thilo Fessmann, Aulnay sous Bois, FR;
Eric Terranova, Magagnosc, FR;
Thilo Fessmann, Aulnay sous Bois, FR;
Eric Terranova, Magagnosc, FR;
L'Oreal, Paris, FR;
Abstract
The invention concerns novel diaminopyrazole derivatives of formula (I), wherein: Rrepresents C-Calkyl or C-C, preferably up to C, alkenyl, linear or branched, bearing at least a substituent selected among OR, NHR, NRR', SR, SOR, COOH, CONH, CONRR′, PO(OH), SH, SOX, a non-cationic heterocycle, Cl, Br or I; X represents H, Na, K or NH; R and R′, identical or different, represent C-Calkyl or C-C, preferably up to C, alkenyl, linear or branched, unsubstituted or substituted by one or several functional groups selected among OH, NH, OR, NHR, NRR′, SR, SOR, SOR, COOH, CONH, CONRR′, PO(OH), SH, SOX, a non-cationic heterocycle, Cl, Br or I, X, R and R′ having the definitions mentioned above; Rrepresents H, or C-Calkyl or C-C, preferably up to C, alkenyl, linear or branched, unsubstituted or substituted by one or several functional groups selected among OH, NH, OR, NHR, NRR′, SR, SOR, SOR, COOH, CONH, CONRR′, PO(OH), SH, SOX, a non-cationic heterocycle, Cl, Br or I, X, R and R′ having the definitions mentioned above; and their physiologically acceptable salts, and their use for oxidation dyeing of keratinous fibres, in particular human hair.