Process for improving the fixation of dyes on materials containing amide groups
AssigneeImperial Chemical Industries PLC
InventorsSteven M. Burkinshaw, Roy Gordon, David J. Marfell, Kakoma D. Maseka
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Abstract
A process which comprises submitting a polyamide textile material, which has been dyed with an acid dye and subsequently treated with an acidic syntan, to treatment with a cationic agent having a plurality of cationic centers.
Claims6
A process which comprises submitting a polyamide microfibre textile material, which has been dyed with an acid dye and subsequently treated with an acidic syntan, to treatment at a pH of from 1.5 to 5 with a cationic agent having a plurality of groups selected from the class consisting of amino groups and quaternary ammonium groups, wherein the cationic agent is a polymer of a cationic monomer or copolymer of a cationic monomer and another comonomer.
Dependencies are inferred from the claim text.