Process for dyeing natural or synthetic polyamide fibre material with dye mixtures
AssigneeCiba-Geigy Corporation
InventorsChristian De Meulemeester, Patrick Runser
Life of this patent
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Abstract
The invention relates to a process for dyeing natural or synthetic polyamide fiber material from an aqueous liquor, in the presence of a levelling assistant and in the presence or absence of an alkali metal fluorosilicate or ammonium fluorosilicate, which process comprises the use of a mixture of the dyes of formulae (1), (2) and (3) or a mixture of the dyes of formulae (4) and (5), or a mixture which contains the dye of formula (6) together with at least one dye of formulae (7), (8) and (9), which dyes of fomaulae (1) to (9) are as defined in claim 1. The inventive process is suitable for dyeing natural or synthetic polyamide fiber material to give dyeings of fiber and surface levelness having good fastness properties.
Claims12
A process for dyeing natural or synthetic polyamide fibre material or both from an aqueous liquor in the presence of a levelling agent and optionally in the presence of an alkali metal fluorosilicate or ammonium fluorosilicate, which process comprises the use of a mixture of dyes of formula (1), (2) and (3) ##STR25## or a mixture of dyes of formulae (4) and (5) ##STR26## or a mixture that comprises a dye of formula (6) ##STR27## together with at least one dye of formula (7), (8) and (9). ##STR28##
A dye mixture which comprises the dyes of formulae (1), (2) and (3) ##STR34## or the dyes of formulae (4) and (5) ##STR35## or the dye of formula (6) ##STR36## together with at least one dye of formulae (7), (8) and (9) ##STR37##
Dependencies are inferred from the claim text.