Dyeing process

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

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Details

8 1A, 8 1B, 8163, 8 41B, 8 41C, 8 21C, C09B 100, C09B 562, D06P 382

Patent

active

039349721

ABSTRACT:
Dyeing cellulose or cellulose/polyester blends by applying unsulphonated dyestuffs containing cyclic anhydride groups, anhydride-forming dicarboxylic acid groups or half-esters or half-amides thereof, as free acids or as salts with ammonia or volatile amines, and heating the fibre until dyestuff fixation takes place.

REFERENCES:
patent: 3163635 (1964-12-01), Riat et al.

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