Patent ID: 6248134
Filing Date: 2001-06-19
Classification: C11D,C12P,D06P

Abstract:
A process for removal of excess dye from newly manufactured printed or dyed fabric or yarn, said process comprising:(a) subjecting said fabric to at least one rinsing step after printing or dyeing using a rinsing liquor that lacks a peroxidase or laccase, oxidation agent, and mediator; and(b) treating said rinsed fabric or yarn with a liquor comprisingat least one enzyme selected from the group consisting of enzymes exhibiting peroxidase activity and enzymes exhibiting laccase activity,an oxidation agent,at least one mediator, wherein said mediator is a compound of the general formula ##STR3##wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 are individually selected from the group consisting of hydrogen, halogen, hydroxy, formyl, carboxy and salts and esters thereof, amino, nitro, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.6 alkoxy, carbonyl(C.sub.1 -C.sub.12 alkyl), aryl, sulfo, aminosulfonyl, carbamoyl, phosphono, phosphonooxy, and salts and esters thereof, wherein the R.sup.1, R.sup.2, R.sup.3, R.sup.4 may be substituted with R.sup.5, wherein R.sup.5 represents hydrogen, halogen, hydroxy, formyl, carboxy and salts and esters thereof, amino, nitro, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.6 alkoxy, carbonyl(C.sub.1 -C.sub.12 alkyl), aryl, sulfo, aminosulfonyl, carbamoyl, phosphono, phosphonooxy, and salts and esters thereof, and optionally additives.