Method for enhancing the activity of an enzyme, bleach...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 9/08 (2006.01) C11D 3/00 (2006.01) C11D 3/386 (2006.01) C12N 9/00 (2006.01) D21C 5/00 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2293698

There is provided a process for enhancing the activity of an oxidoreductase, comprising adding to the enzyme, as an enhancer for the activity of said enzyme, a compound having formula (I) wherein R1-R4 may each independently represent hydrogen, hydroxy, halogen, nitroso, formyl, carboxyl, and esters and salts thereof, carbyamoyl, sulfo and esters and salts hereof, sulfamoyl, nitro, amino, phenyl, C1-C20 alkyl, C1-C8 alkoxy, carbonyl-C1-C6-alkoxy, aryl- C1-C6-alkyl, whereby two of the groups R1-R4 may be linked together by any group, and A is a five or six membered heterocyclic ring which may be optionally substituted with any of the radicals as defined for R1-R4. A bleach composition, a detergent composition and a process for inhibiting dye transfer from one fabric to another during washing are also disclosed.

L'invention concerne un procédé pour améliorer l'activité d'une oxydoréductase. Ce procédé consiste à ajouter à cette enzyme un composé présentant la formule (I) pour améliorer son activité. Dans la formule (I), R?1¿-R?4¿ peuvent chacun représenter, indépendamment, hydrogène, hydroxy, halogène, nitroso, formyl, carboxyl, et des esters et des sels de ces derniers, du carbyamoyle, du sulfo et des esters et des sels de ces derniers, du sulfamoyl, nitro, amino, phényl, alkyl C¿1?-C¿20?, alcoxy C¿1?-C¿8?, carbonyl-C¿1?-C¿6?-alcoxy, aryl-C¿1?-C¿6?-alkyl. Deux des groupes R?1¿-R?4¿ peuvent être liés ensemble par tout groupe et A est une chaîne hétérocyclique à cinq ou six éléments et peut être éventuellement substitué par l'un quelconque des radicaux tels que définis pour R?1¿-R?4¿. L'invention concerne aussi une composition de blanchiment, une composition détergente et un procédé pour inhiber le transfert de colorant d'un tissu à l'autre pendant le lavage.

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