Azo compounds, containing a 1,2,4-thiadiazole moiety

Details Azo compounds, containing a 1,2,4-thiadiazole moiety Azo compounds, containing a 1,2,4-thiadiazole moiety

1979-02-26

1981-03-31

Niebling, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260154, 260158, C09B 2922, C09B 2936, C09B 3114

Patent

active

042592364

ABSTRACT:
An azo dyestuff which is free from groups conferring solubility in water and has the general formula I ##STR1## in which R denotes hydrogen, halogen, a hydrocarbon radical with up to 18 carbon atoms which is bonded by means of a direct bond or a sulphur or oxygen atom and can be substituted, trifluoromethyl, cyano, dichlorocyanomethyl, chlorodicyanomethyl, tribromomethyl or trichloromethyl or denotes a heterocyclic radical containing nitrogen, Hal is a halogen atom, R.sub.1 is an optionally substituted alkyl group and "acyl" denotes the acyl radical of an organic carboxylic acid, carbamic acid, carbonic acid or sulphonic acid with, preferably up to 0.18 carbon atoms. The new dyestuffs dye polyester fibers in fast red shades.

REFERENCES:
patent: 3775049 (1973-11-01), Wolfrum et al.
patent: 3963431 (1976-06-01), Koller et al.

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