Enzymatic method for overdyeing warp dyed denim textiles
AssigneeNovo Nordisk A/S
InventorsMartin Barfoed, Ole Kirk
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Abstract
The present invention relates to methods of overdyeing a warp dyed denim textile, comprising treating the textile in an aqueous dye liquor with a dye system which comprises an effective amount of (a) one or more mono-, di- or polycyclic aromatic or heteroaromatic compounds and (b) (i) a hydrogen peroxide source and at least one enzyme exhibiting peroxidase activity and/or (ii) at least one enzyme exhibiting oxidase activity on the one or more aromatic or heteroaromatic compounds.
Claims22
A method of overdyeing a warp dyed denim textile, comprising treating the warp dyed denim textile in an aqueous dye liquor with a dyeing system which comprises (a) one or more compounds selected from the group consisting of a monoaromatic, diaromatic, polycyclic aromatic and heteroaromatic compounds which are optionally substituted with one or more functional groups or substituents, wherein each functional group or substituent is selected from the group consisting of halogen;
- sulfo;
- sulfonato;
- sulfamino;
- sulfanyl;
- amino;
- amido;
- nitro;
- azo;
- imino;
- carboxy;
- cyano;
- formyl;
- hydroxy;
- halocarbonyl;
- carbamoyl;
- carbamidoyl;
- phosphonato;
- phosphonyl;
- C.sub.1-18 -alkyl;
- C.sub.1-18 -alkenyl;
- C.sub.1-18 -alkynyl;
- C.sub.1-18 -alkoxy;
- C.sub.1-18 -oxycarbonyl;
- C.sub.1-18 -oxoalkyl;
- C.sub.1-18 -alkyl sulfanyl;
- C.sub.1-18 -alkyl sulfonyl;
- C.sub.1-18 -alkyl imino and amino which is substituted with one, two or three C.sub.1-18 -alkyl groups;
- wherein each C.sub.1-18 -alkyl, C.sub.1-18 -alkenyl and C.sub.1-18 -alkynyl group may be mono-, di or poly-substituted by any of the proceeding functional groups or substituents, and (b) (i) a hydrogen peroxide source and at least one enzyme exhibiting peroxidase activity on the one or more aromatic or heteroaromatic compounds of (a) and/or (ii) at least one enzyme exhibiting oxidase activity on the one or more aromatic or heteroaromatic compounds of (a), in which (a) and (b) are present in amounts effective to impart an overdyed appearance to the warp dyed denim textile.
Dependencies are inferred from the claim text.