Patent ID: 7109156

Claim:
A bleaching composition in granular, powder, bar, paste, gel, pill, tablet, or gelcap form comprising (a) a peroxygen source; and (b) an encapsulated or agglomerated organic catalyst selected from the group consisting of aryliminium cations and aryliminium polyions, which have a net charge of from about +3 to about −3, that are represented by the formula [I]: where R 2 and R 3 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; R 1 and R 4 are selected from substituted or unsubstituted, saturated or unsaturated radicals selected from the group consisting of H, alkyl, cycloalkyl, aryl, alkaryl, aralkyl, heterocyclic ring, silyl, nitro, halo, cyano, alkoxy, keto and carboalkoxy radicals; and X − is a suitable charge-balancing counterion; and v is an integer from 1 to 3; wherein the organic catalyst becomes available in a wash solution containing said bleaching composition by a controlled availability method, the availability of said catalyst being delayed until after said peroxygen source has been released, such that said organic catalyst is made available by said controlled availability method.