Azo dyestuffs containing -SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H

Details Azo dyestuffs containing -SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H Azo dyestuffs containing -SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H

1979-08-13

1981-06-02

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260206, 260207, 2602071, 260458C, 260465D, 260465E, 568 30, 568 32, C09B 2901, C09B 29085, C09B 2926, C09B 6251

Patent

active

042710723

ABSTRACT:
Water-soluble dyestuffs are disclosed which, in the form of the free acid, have the formula ##STR1## wherein R.sub.1 is selected from the group consisting of H, alkyl having 1-4carbon atoms, cyanoalkyl having 2-4 carbon atoms, hydroxy alkyl having 2-4 carbon atoms or a sulfuric acid ester of a hydroxy alkyl having 2-4 carbon atoms; R.sub.2 is selected from the group consisting of H, methyl, ethyl, methoxy or ethoxy; R.sub.3 is selected from the group consisting of H, halogen, methyl, ethyl, methoxy, ethoxy, or carbonamido having 1-4 carbon atoms;

REFERENCES:
patent: 2784204 (1957-03-01), Heyna et al.
patent: 3531549 (1970-09-01), Chiddix et al.
patent: 3852263 (1974-12-01), Siegel
patent: 4036825 (1977-07-01), Fuchs et al.
patent: 4066638 (1978-01-01), Fuchs et al.

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