Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 11, 2007
Patent Application Number
10565137
Date Filed
July 14, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention relates to novel the cationic dyes of formula (1) wherein R1 is an unsubstituted or substituted C1-C14 alkyl or an aryl radical; X− is an anion; R3 is an unsubstituted or substituted C1-C14 alkyl, aryl radical, C1-C6 alkoxy, cyanid, nitro or halide; n is 1 or 2; and if n is 1, then R2 is hydrogen, unsubstituted or substituted C1-C14 alkyl; or if n is 2, then R2 is an unsubstituted or substituted C1-C14 alkylen. Further, the present invention relates to compositions thereof, especially comprising other dyes, to processes for the preparation thereof and to the use thereof in the dyeing of organic material, such as keratin, wool, leather, silk, paper, cellulose or polyamides, and preferably human hair
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