Use of water-soluble disazo dyestuffs for dyeing or printing syn

Details Use of water-soluble disazo dyestuffs for dyeing or printing syn Use of water-soluble disazo dyestuffs for dyeing or printing syn

1975-12-08

1977-10-04

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 71, 8 41B, 8178R, 260176, C09B 2700, D06P 102

Patent

active

040521575

ABSTRACT:
Use of a water-soluble disazo dyestuff of the formula ##STR1## in which R.sub.1 represents a hydrogen atom or the sulfonic acid group, R.sub.2 represents a chlorine atom or the methoxy group, and R.sub.3 and R.sub.4 each represents a hydrogen atom or a methoxy group, for the dyeing or printing of synthetic textile material consisting of or containing polyamide or polyurethane fibers, the dyestuff used yielding on the said fibrous material excellent, clear golden-yellow to orange dyeings or prints being distinguished by very good properties as to fastness to light and to wetting.

REFERENCES:
patent: 2251921 (1941-08-01), Dickey et al.
patent: 2474024 (1949-06-01), Anderson
patent: 3351580 (1967-11-01), Koike et al.

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