Sulfonated disazo dyestuffs containing an ether group

Details Sulfonated disazo dyestuffs containing an ether group Sulfonated disazo dyestuffs containing an ether group

1971-08-18

1976-01-13

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 13, 8 41B, 8 41R, 260152, 260191, 260186, C07C10706

Patent

active

039323781

ABSTRACT:
Disazo compounds of the formula ##SPC1##
In which R.sub.1 represents a sulphobenzene or sulphonaphthalene radical, B.sub.1, B.sub.2, E.sub.1 and E.sub.2 each represents a hydrogen atom, a low molecular alkyl or alkoxy radical, R.sub.2 represents a low molecular alkylene radical, X represents a functional radical, and --OR.sub.2 --X is in the ortho- or para-position to the azo bridge, and process for the preparation of these dyestuffs. These dyestuffs provide natural and synthetic polyamides, e.g. wool and nylon, with dyeings of excellent general fastness properties.

REFERENCES:
patent: 1711390 (1929-04-01), Knecht
patent: 3060168 (1962-10-01), Liechti
patent: 3485814 (1969-12-01), Speck
patent: 3708596 (1973-01-01), Happe et al.
patent: 3725384 (1973-04-01), Zickendraht et al.

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