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. 21, 2007
Filed:
Jan. 07, 2003
Victor Paul Eliu, Lörrach, DE;
Beate Fröhling, Steinen, DE;
Julia Hauser, Grenzach-Wyhlen, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The present invention relates to novel cationic yellow dyes of formula (1) wherein Rand Rare each independently of the other a C-Calkyl radical or an unsubstituted or substituted benzyl radical, Ris hydrogen, C-Calkyl, C-Calkoxy, cyanide or halide, preferably hydrogen and X is an anion, with the proviso that at least one of the substitutents Ris a benzyl radical and Ris a methyl radical, Ris not hydrogen, also to compositions therof, especially comprising other dyes, to processes for the preparation therof and to the use therof in the dyeing of organic material, such as keratin, wool, leather, silk, cellulose or polyamides, especially keratin-containging fibres, cotton or nylon, and preferably human hair.