BLEACH AND OXIDATION CATALYST

摘要

The present invention concerns a method of making manganese ion-containing catalyst salts, which comprise a mononuclear or dinuclear Mn (III) and/or Mn (IV) complex based on cyclic triamine ligands and a non-coordinating silicate-based counterion. The invention also concerns compositions comprising such salts and bleaching formulations comprising the salt and a peroxy compound. The salt, and formulations comprising it, are suitable for use in catalysing oxidation, for example as a component of a laundry or dishwasher bleaching composition. The invention further relates to methods of oxidising with the bleaching formulations described herein.

主权项

1. A method comprising contacting an alkaline earth metal silicate with a salt comprising a mononuclear or dinuclear Mn (III) and/or Mn (IV) complex of a ligand of formula (I):wherein:
Q= p is 3; R is independently selected from the group consisting of hydrogen, C1-C24alkyl, CH2CH2OH and CH2COOH; or one R is linked to the nitrogen atom of another Q of another ring of formula (I) via a C2-C6 alkylene bridge, a C6-C10 arylene bridge or a bridge comprising one or two C1-C3 alkylene units and one C6-C10 arylene unit, which bridge may be optionally substituted one or more times with independently selected C1-C24 alkyl groups; and R1, R2, R3, and R4 are independently selected from H, C1-C4alkyl and C1-C4-alkylhydroxy.