Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1974-03-21
1976-04-27
Zevy, Donald
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 1A, 8 1B, 8 41B, 8 41C, 8163, 8178R, D06P 120, D06P 138, D06P 310
Patent
active
039531627
ABSTRACT:
Dyeing nylon by applying sulphonated or 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.
patent: 3624068 (1971-11-01), Dehnert
Cheetham Ian
Chokshi Vibhas
Dunkerley Kenneth
Eckersley Dennis
Greenhalgh Colin William
Clingman A. L.
Imperial Chemical Industries Limited
Zevy Donald
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