Process for dyeing natural or synthetic polyamide fibre...

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

D - Textiles, Paper

06

P

8/31.07

D06P 1/673 (2006.01) C09B 67/22 (2006.01) C09B 67/24 (2006.01) D06P 3/06 (2006.01)

Patent

CA 1263001

Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes Abstract of the Disclosure 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.

482529

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