Azo dyestuffs

Details Azo dyestuffs Azo dyestuffs

C - Chemistry, Metallurgy

09

B

8/25, 8/4, 260/1

C09B 35/00 (2006.01) C09B 44/08 (2006.01) C09B 67/32 (2006.01) D06P 1/04 (2006.01) D06P 1/08 (2006.01) D21H 21/28 (2006.01)

Patent

CA 1067070

Abstract of the Disclosure Disclosed are bicationic dis- and trisazo dyestuffs which are free from sulphonic acid groups and which contain terminal coupling components, said coupling components being 4-methyl-6-hydroxy-3N-pyridinium-pyridone-2 radicals, coupled at the 5-position of the pyridone ring, their production and use thereof for dyeing paper.

255858

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