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

1985-05-23

1986-11-18

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Inorganic additive for dye composition, dye composition...

Ammonium salt

8630, 8632, 8680, 8685, 8917, 8924, 8618, C09B 6724, D06P 167

Patent

active

046233580

ABSTRACT:
The invention relates to a process for dyeing natural or synthetic polyamide fibre material levelly from an aqueous liquor, with 1:1 metal complex dyes which contain sulfo groups, in the presence of an alkali metal salt or an ammonium salt and optionally in the presence of an assistant, which comprises carrying out dyeing in the presence of an alkali metal fluoride or ammonium fluoride, of an alkali metal fluorosilicate or ammonium fluorosilicate, or of an alkali metal fluoroborate or ammonium fluoroborate, at a pH in the range from 3 to 7.
The process of this invention is suitable for dyeing natural or synthetic polyamide material in level shades of good fastness properties.

REFERENCES:
patent: 3592584 (1971-07-01), Link et al.
patent: 3630662 (1971-12-01), Brody et al.
patent: 3857727 (1974-12-01), Benisek
patent: 3990842 (1976-11-01), Millsaps
patent: 4444564 (1984-04-01), Salathe et al.

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