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. 15, 2006
Filed:
Feb. 14, 2002
Thilo Fessmann, Aulnay Sous Bois, FR;
Eric Terranova, Magagnosc, FR;
Thilo Fessmann, Aulnay Sous Bois, FR;
Eric Terranova, Magagnosc, FR;
L'Oreal, , FR;
Abstract
The invention relates to diaminopyrazole derivatives having the following structure (I), wherein Rrepresents an alkyl or alkenyl radical bearing at least one substituent selected from among OR, NRR', SR, SOR, SOR, COOR, CONRR′, PO(OH), SOX, NHCONRR, a non-cationic heterocycle, an aryl, a halogen. Rand Rare different from H and represent, independently of each other, an alkyl or alkenyl group; Rand R, together with the nitrogen atom to which they are attached, can form a heterocycle possibly comprising at least one other heteroatom selected from among N, O and S; Rand Ror the heterocycle that they form with the nitrogen to which they are attached can be substituted by at least one substituent defined above. The identical or different R, R′ groups are selected from a hydrogen atom, an alkyl or alkenyl group; R and R′, together with the nitrogen atom to which they are attached, can form a heterocycle having at least 4 ring members that can contain at least one additional heteroatom selected from among O, N and S. X represents a hydrogen, an alkaline-earth or alkali metal atom or an ammonium group. The invention also relates to the dyeing compositions and the dyeing methods using same