Patent ID: 6821935
Filing Date: 2004-11-23
Classification: C11D

Abstract:
A bleach system for laundering fabrics in need of cleaning comprising from about 0.001 ppm to about 5 ppm of a zwitterionic organic catalyst compound which is arylimirium zwitterions, which have a net charge of from about +3 to about âˆ’3, that are represented by the formula [II]: where R5-R7 are independently selected from substituted or unsubstituted radicals selected from the group consisting of H, alkyl, cycloalkyl, aryl, alkaryl, aralkyl, heterocyclic ring, silyl, nitro, halo, cyano, sulfonato, alkoxy, keto, carboxylic and carboalkoxy radicals; also present in this formula is the radical represented by the formula:â€”Toâ€”Zp&ominus;where Zpâˆ’ is covalently bonded to To, and Zpâˆ’ is selected from the group consisting of â€”CO2âˆ’, â€”SO3âˆ’, â€”OSO3âˆ’, â€”SO2âˆ’ and â€”OSO2âˆ’ and p is either 1, 2 or 3; To is selected from the group consisting of substituted or unsubstituted, saturated or unsaturated alkyl, cycloalkyl, aryl, alkaryl, aralkyl and heterocyclic ring.