Cationic imidazole azo dyes

Details Cationic imidazole azo dyes Cationic imidazole azo dyes

C - Chemistry, Metallurgy

09

B

C09B 43/11 (2006.01) C09B 43/40 (2006.01) C09B 44/16 (2006.01) C09B 47/04 (2006.01) C09B 62/085 (2006.01) C09B 67/22 (2006.01) D06P 1/08 (2006.01) D21H 21/28 (2006.01) A61K 7/13 (1995.01)

Patent

CA 2161947

The cationic imidazole azo dyes of the formulae (1), (2) and (3) given in claim 1 are particularly suitable for the dyeing of paper. Paper is dyed using these dyes in red or violet shades having good fastness properties.

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