Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Treating textiles or fibers from synthetic resin or natural...
Patent
1973-08-17
1977-01-04
Welsh, M. J.
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Treating textiles or fibers from synthetic resin or natural...
8173, 8176, 8178E, D06P 324
Patent
active
040009700
ABSTRACT:
A process for the batdhwise dyeing of polyamide textile materials which comprises treating said material in an aqueous dye liquor containing not more than 10% by volume of at least one organic liquid capable of forming an azeotrope with water and an anionic dye, said dye liquor being maintained during at least part of the treatment at a temperature higher than the boiling point of said azeotrope and under a pressure greater than atmospheric pressure, and then recovering the organic liquid, by distillation before removing the textile material from the aqueous dye liquor.
REFERENCES:
patent: 3667898 (1972-06-01), Bergman et al.
Fawkes David Melville
Harvey Edwin Dennis
Hawkes James Anthony
Lemin Denis Ronald
Imperial Chemical Industries Limited
Welsh M. J.
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