Patent ID: 7534757
Filing Date: 2009-05-19
Classification: C11D

Abstract:
1. A bleaching composition comprising: a) a monomer ligand, L, or transition metal catalyst thereof of a ligand having the formula (I): wherein R1 and R2 are selected from the group consisting of: a group containing a heteroatom capable of coordinating to a transition metal; a —Cl—C22-optionally substituted-alkyl; a —C6-C10-aryl; a —Cl—C4-alkyl-C6-ClO-aryl; and, wherein at least one of R1 and R2 is a non-aromatic hydrocarbon group, the non-aromatic hydrocarbon group being a C8-C22-alkyl chain; R3 and R4 are independently selected from: hydrogen, C1-C4-alkyl, phenyl, electron withdrawing groups and reduced products and derivatives thereof; X is selected from: C═O, a ketal derivative of C═O, a thioketal of derivative of C═O, and —[C(R6) z groups are same monocylcic or dicyclic heteroaromatic N- donor groups of the form: wherein R is —CO—C4-alkyl, and, b) the balance carriers and adjunct ingredients, together with at least 2% wt/wt of a peroxygen bleach or source thereof.