Coloring process for synthetic textile materials

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

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8 73, 8179, 260205, 2602071, C09B 2700, D06P 102

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active

040294692

ABSTRACT:
Process for coloring aromatic polyester textile materials which comprises applying to the said textile material by an aqueous dyeing, padding or printing process an aqueous dispersion of a water-insoluble monoazo dyestuff of the formula:- ##STR1## wherein X is hydrogen or methyl, Y and Z are each independently chlorine or bromine, and R is lower alkyl, and subsequently subjecting the colored textile material to a treatment in an aqueous solution of sodium hydrosulphite whereby the aromatic polyester textile materials are colored in brown shades of excellent fastness properties.

REFERENCES:
patent: 3125402 (1964-03-01), Kruckenberg
patent: 3337522 (1967-08-01), Wegmuller
patent: 3775049 (1973-11-01), Wolfrum et al.
Venkataraman, "The Chemistry of Synthetic Dyes" vol. 3, (Academic Press, 1970) pp. 433-434.
Schmidlin, "Preparation and Dyeing of Synthetic Fibres" (Chapman & Hall, 1963) p. 274.

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