Enzymatic methods for dyeing with reduced vat and sulfur dyes

Details Enzymatic methods for dyeing with reduced vat and sulfur dyes Enzymatic methods for dyeing with reduced vat and sulfur dyes

D - Textiles, Paper

06

P

D06P 1/22 (2006.01) D06P 1/00 (2006.01) D06P 1/30 (2006.01)

Patent

CA 2351468

The present invention relates to methods for dyeing a material, comprising (a) treating the material with a dyeing system which comprises one or more reduced vat dyes and/or one or more reduced sulfur dyes: and (b) oxidizing the one or more reduced vat dyes or one or more reduced sulfur dyes adsorbed onto the treated material with an oxidation system comprising (i) an oxygen source and one or more enzymes exhibiting oxidase activity or (ii) a hydrogen peroxide source and one or more enzymes exhibiting peroxidase activity, 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, leather, linen, lyocel, polyacrylic, polyamide, polyester, ramie, rayon, silk, tencel, triacetate, viscose or wool.

La présente invention concerne des méthodes de teinture consistant à (a) traiter le matériau avec un système de teinture qui renferme au moins un colorant de cuve réduit et/ou au moins un colorant soufré réduit: et (b) oxyder au moins un colorant de cuve réduit et au moins un colorant soufré réduit adsorbés sur le matériau traité au moyen d'un système d'oxydation. Ce système d'oxydation comprend (i) une source d'oxygène et un ou plusieurs enzymes à activité oxydase ou (ii) une source de peroxyde d'hydrogène et un ou plusieurs enzymes à activité peroxydase, qui permettent de rendre aux colorants réduits leurs formes colorées insolubles oxydées d'origine. Sont concernés les matériaux suivants: coton, diacétate, lin, fourrure, peau, cuir, toile, fibre Lyocell, polyacrylique, polyamide, polyester, ramie, rayonne, soie, Tencel, triacétate, viscose ou laine sous forme de tissu, fil, fibre, vêtement ou film.

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