Coloration process
AssigneeImperial Chemical Industries PLC
InventorsViolet Boyd, Brian Ribbons Fishwick, Brian Glover
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Abstract
Process for the coloration of aromatic polyester or cellulose triacetate textile materials which comprises applying to the said textile material by an aqueous dyeing, padding or printing process a disperse dyestuff which contains at least two carboxylic acid ester groups and subsequently giving the colored textile material a treatment in an aqueous solution of an alkali having a pH above 8 and at a temperature between 50.degree. and 85.degree. C, whereby the textile materials are colored in a wide variety of shades possessing very good to excellent fastness properties.
Claims3
Process for the coloration of aromatic polyester or cellulose triacetate textile materials which comprises applying to the said textile materials by an aqueous dyeing, padding or printing process an aqueous dispersion of a disperse anthraquinone or azo dyestuff free from carboxylic acid or sulphonic acid groups, said dyestuff containing from 2 to 4 carboxylic acid ester groups, and subsequently giving the colored textile material a treatment in an aqueous solution of an alkali metal hydroxide or alkali metal carbonate having a pH above 8 and at a temperature between 50.degree. and 85.degree. C.
Dependencies are inferred from the claim text.