Patent ID: 6129769
Filing Date: 2000-10-10
Classification: D06P

Abstract:
A method for dyeing a material, comprising:(a) treating the material with one or more enzymes of an oxidation system which comprises (i) an oxygen source and one or more enzymes exhibiting oxidase activity selected from the group consisting of bilirubin oxidase, catechol oxidase, laccase, o-aminophenol oxidase, polyphenol oxidase, ascorbate oxidase, and ceruloplasmin, or (ii) a hydrogen peroxide source and one or more enzymes exhibiting peroxidase activity whicn is a peroxidase or haloperoxidase; and simultaneously or subsequently,(b) treating the material of step (a) with a dyeing system which comprises one or more reduced vat dyes subsequently or one or more reduced sulfur dyes; and(c) oxidizing the one or more reduced vat dyes or one or more reduced sulfur dyes adsorbed onto the treated material with the oxygen source or the hydrogen peroxide source to convert the one or more reduced dyes to their original oxidized insoluble colored forms;wherein the material is a fabric yarn, fiber, garment or film made of cotton, diacetate, flax, fur, hide, linen, lyocel, polyacrylic, polyamide, polyester, ramie, rayon, triacetate, or viscose.