Bleach systems comprising bis- and tris(.mu.-oxo)dimanganese complex salts

US5942152A · kind A · utility

Assignee

• Aventis Research & Technologies GmbH & Co. · DE

Inventors

• Ahmed M. Tafesh · Acre, IL
• Matthias Beller · Ostseebad Nienhagen, DE
• Vera Friderichs · Bernkastel-Kues, DE
• Gerd Reinhardt · Kelkheim, DE

Key dates

• Filing date: Jan 3, 1997
• Grant date: Aug 24, 1999
• Expiry date: Jan 3, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3932
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Bleach systems comprising bis- and tris(.mu.-oxo)dimanganese complex salts as catalyst Bis- and tris(.mu.-oxo)dimanganese complex salts of the formula EQU LMn(.mu.-O).sub.a (.mu.-OAc).sub.b MnL!.sup.x A.sub.y as catalysts for oxidizing organic compounds, in which formula PA1 Ac is a C.sub.2 -C.sub.8 -acyl group, PA1 a is 1, 2 or 3, PA1 b is 0 if a is 2 or 3 or is 2 if a is 1, PA1 x denotes the number of positive charges and is 2 or 3, PA1 A is an anion, PA1 y is the equivalent amount of anion A required to compensate the positive charges, and PA1 L is a ligand, preferably N,N'-bis(2-pyridylmethyl)-N-methylamine or N,N,N',N'-tetrakis(2-pyridylmethyl)-1,2-ethylenediamine are employed as catalysts in bleach systems for textile material.