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. 10, 2010
Filed:
Aug. 21, 2006
Victor Paul Eliu, Lörrach, DE;
Beate Fröhling, Grenzach-Wyhlen, DE;
Dominique Kauffmann, Illzach, FR;
Victor Paul Eliu, Lörrach, DE;
Beate Fröhling, Grenzach-Wyhlen, DE;
Dominique Kauffmann, Illzach, FR;
Ciba Corporation, Tarrytown, NY (US);
Abstract
Disclosed are thiol dyes of formula (I), wherein R, R, R, Rand Rindependently from each other are hydrogen; unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C-Calkyl; C-Calkenyl; C-Caryl; C-Caryl-C-Calkyl; or C-Calkyl(C-Caryl); A is a residue of an organic dye; and Yis the direct bond; CCalkylene; C-Ccycloalkylene; C-Carylene; or C-Carylene-(C1-Calkylene). The compounds are used to dye hair with or without reducing agents. Furthermore, the present invention relates to compositions comprising thiol dyes of formula (I) and to process for the preparation of theses compounds.