Enzymatic method for textile dyeing
AssigneeNovozymes A/S
InventorsMartin Barfoed, Ole Kirk, Sonja Salmon
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Abstract
The present invention relates to methods of dyeing a material which involve contacting the material with a dyeing system which comprises: (a) a mixture of (i) an aromatic diamine and (ii) one or more of a naphthol and an aminonaphthalene and (b) an oxidation system comprising (i) a hydrogen peroxide source and an enzyme exhibiting peroxidase activity or (ii) an enzyme exibiting oxidase activity on one or more of the compounds of mixture (a). The material may be a fabric, yarn, fiber, garment or film made of fur, hide, leather, silk or wool, or made of cationic polysaccharide, cotton, diacetate, flax, linen, lyocel, polyacrylic, synthetic polyamide, polyester, ramie, rayon, triacetate, or viscose.
Claims18
A method for dyeing a material, said method comprising contacting the material with a dyeing system which comprises:
- (a) a mixture of (i) at least one aromatic diamine and (ii) at least one compound selected from the group consisting of a naphthol and an aminonaphthalene;
- wherein said naphthol is not unsubstituted alpha-naphthol, halogenated 1-naphthol, or an unsubstituted dihydroxynaphthalene and
- (b) an oxidation system comprising (i) a hydrogen peroxide source and an enzyme exhibiting peroxidase activity or (ii) an enzyme exhibiting oxidase activity on one or more of the compounds of mixture (a), under conditions in which a colored material is produced.
Dependencies are inferred from the claim text.