Coloration process

Details Coloration process Coloration process

1977-11-01

1979-01-16

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 1A, 8 1E, 8 21B, 8 21C, 8 26, C09B 2700

Patent

active

041347234

ABSTRACT:
A process for the coloration of aromatic polyester textile materials which comprises applying to the said textile materials by an aqueous dyeing, padding or printing process a disperse monoazo dyestuff, free from carboxylic acid and sulphonic acid groups, which, in one of the possible tautomeric forms, is represented by the formula: ##STR1## wherein A is phenyl or phenyl which contains at least one substituent selected from chlorine, bromine, nitro, cyano, trifluoromethyl, thiocyano, lower alkyl, lower alkoxy, lower alkylcarbonyl, lower alkylsulphonyl, lower alkylcarbonylamino, carbamoyl and N-lower alkyl and N:N-di lower alkyl derivatives thereof, sulphamoyl and N-lower alkyl and N:N-di lower alkyl derivatives thereof, sulphamato and N-lower alkyl and N:N-di lower alkyl derivatives thereof, lower alkoxycarbonyl, lower alkoxy lower alkoxycarbonyl, lower alkoxy lower alkoxy lower alkoxycarbonyl, hydroxy lower alkoxycarbonyl, hydroxy lower alkoxy lower alkoxycarbonyl, and lower alkoxycarbonyl lower alkyl.
X is hydrogen, lower alkyl, carbamoyl, cyano, chlorine, bromine, nitroso, nitro, lower alkylcarbonyl, sulphamoyl, lower alkylsulphonyl, lower alkylcarbonylamino or lower alkoxycarbonyl; and
Z is hydrogen or lower alkyl;
And subsequently giving the colored textile material a treatment in an aqueous alkaline bath at a pH above 8 and at a temperature between 50.degree. and 85.degree. C, whereby the textile materials are colored in greenish-yellow to red shades possessing excellent fastness properties.

REFERENCES:
patent: 3869441 (1975-03-01), Hughes
patent: 3993438 (1976-11-01), Fishwick et al.
patent: 3993441 (1976-11-01), Heinrich et al.
patent: 4002425 (1977-01-01), Heinrich et al.
patent: 4017256 (1977-04-01), Kogel et al.
patent: 4065254 (1977-12-01), Buhler et al.

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