Metal complexes as bleach activators

US5969171A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventor

• Bernd Nestler · Jena, DE

Key dates

• Filing date: Jun 30, 1998
• Grant date: Oct 19, 1999
• Expiry date: Jun 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F13/005
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Metal complexes of the formula 1 EQU [L.sub.n M.sub.m X.sub.p ].sup.z Y.sub.q (1) where PA1 M is manganese in oxidation state II, III, IV, V and/or VI or cobalt in oxidation state II and/or III or iron in oxidation state II and/or III, PA1 X is a coordinating or bridging group, PA1 Y is a counterion in the appropriate stoichiometric amount to compensate an existing charge z, where PA1 z as the charge of the metal complex can be positive, zero or negative, n and m independently of one another are integers from 1 to 4, PA1 p is an integer from 0 to 15, PA1 q is z/charge of Y, and PA1 L is a ligand of the formula (2), (3) or (4) ##STR1## and A and R.sup.1 to R.sup.8 are as defined in the description.