C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/157, 8/25.2
C09B 31/00 (2006.01) C09B 62/513 (2006.01) D06P 1/06 (2006.01)
Patent
CA 1113930
Abstract of the Disclosure Water-soluble dyestuffs are described which in the acid form possess the formula Image wherein D is a benzene or naphthalene nucleus, R1 is linked to D in ortho- position to the azo group and means hydrogen, halogen, lower alkoxy, lower alkyl, carboxy or sulfo, R2 is hydrogen, halogen, lower alkyl, lower alkoxy or sulfo, R is hydrogen or lower alkyl, preferably hydrogen, and R, R1 and R2 are identical or different to one another and X is the vinyl group or a sulfato-, chloro- or thiosulfato-ethyl group, A is a bridging member prefer- ably selected from the diphenylene, diphenylsulfone and diphenylamine series, Z and Z1 each represent a hydroxy or amino group with the proviso that each Z and each Z1 have the same meaning. These novel dyestuffs are prepared by diazotization and coupling of the corresponding diazo and coupling components in usual manner known in the art. The novel dyestuffs possess a very valuable fiber-reactivity and are suitable for dyeing natural and regenerated cellulose or natural. regenerated or synthetic polyamide fiber materials. They can easily be applied and fixed by application methods usual and known in the art, and yield on these fiber materials dyeings and prints which possess good fastnesses, especially fastnesses to light, to washing, to perspiration and to cross-dyeing. Their fixation degree on the fiber material and correspond- ingly their tinctorial strength are outstanding.
321906
Hoyer Ernst
Meininger Fritz
Noll Walter
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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