Method of treating natural or synthetic polyamide fibre materials
AssigneeCiba Specialty Chemicals Corporation
InventorPhilippe Ouziel
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Abstract
A method of improving the resistance of dyes on natural or synthetic polyamnide fiber materials to the action of ozone and NOx, which comprises treating the fiber material, before, during or after dyeing, with a liquor comprising a terpolymer containing structural repeating units of formulae (I), (II) and (III) in which R is a radical of formula (IV) wherein A1 and A2 are independently of one another a direct bond, C1–C8alkylene or —CO—NH—C1–C8alkylene, E is vinyl or —OSH3H and n denotes 0 or 1. The dyeings and prints obtained are distinguished by improved ozone fastness properties without the shade, color yield and other fastness properties, for example fastness to light, being affected
Claims12
A method of improving the resistance of a dye on a natural or synthetic polyamide fibre material to the action of ozone and NOx, which comprises treating the fibre material, before, during or after dyeing, with a liquor comprising a terpolymer containing structural repeating units of formulae (I), (II) and (III)
- in which R is a radical of formula (IV)
- wherein A1 and A2 are independently of one another a direct bond, C1–C8alkylene or —CO—NH—C1–C8alkylene, E is vinyl or —OSO3H and n denotes 0 or 1.
Dependencies are inferred from the claim text.