Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid di

Details Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid di Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid di

1979-06-04

1981-05-12

Niebling, John F.

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Leather dyeing

8641, 260206, C09B 2700, D06P 100

Patent

active

042669391

ABSTRACT:
The invention provides dyestuffs of the general formula ##STR1## in which R is hydrogen or an alkyl group having 1 to 6 carbon atoms and R' is an alkyl group having 1 to 6 carbon atoms.

REFERENCES:
patent: 3557079 (1971-01-01), Doody
patent: 3802836 (1974-04-01), Speck
patent: 4098570 (1978-07-01), Skelly et al.
Venkataraman, K., "The Chemistry of Synthetic Dyes," vol. 1, pp. 634-635 (1952).

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