Process for dyeing natural or synthetic polyamide fibre material

Details Process for dyeing natural or synthetic polyamide fibre material Process for dyeing natural or synthetic polyamide fibre material

1987-09-30

1989-04-04

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Inorganic additive for dye composition, dye composition...

Ammonium salt

8632, 8634, 8680, 8685, 8686, 8917, 252 86, 252 87, 252 88, 252 89, C09B 6724, D06P 167, D06P 324

Patent

active

048182486

ABSTRACT:
The present invention relates to a process for dyeing natural or synthetic polyamide fibre material from an aqueous liquor with dyes, in the presence of an alkali metal salt or an ammonium salt and in the presence of an assistant, which process comprises dyeing said fibre material with at least one sulfonated 1:1 metal complex dye or with a mixture containing at least one sulfonated 1:1 metal complex dye and at least one sulfonated metal-free dye, in the presence of 10 to 45 percent by weight of an alkali fluorosilicate or ammonium fluorosilicate or a mixture thereof, based on the amount of the 1:1 metal complex dye employed, and in the presence of an assistant at a pH value of 3 to 5.
The process of the invention is suitable for dyeing natural or synthetic polyamide materials to give non-skittery and level dyeings of good fastness properties.

REFERENCES:
patent: 1372038 (1921-03-01), Phair
patent: 3990842 (1976-11-01), Millsaps
patent: 4444564 (1984-04-01), Salathe et al.
patent: 4623358 (1986-11-01), Back et al.
patent: 4681596 (1987-07-01), Back et al.

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