Patent · US Active

Use of transition metal complexes as bleach catalysts in washing and cleaning compositions

US9102903B2 · kind B2 · utility

4Cited by

7References

17Claims

0Family size

Assignee

WeylChem Switzerland AG · CH

Inventors

Gerd Reinhardt · Kelkheim, DE
Werner Janitschek · Heistenbach, DE
Miriam Ladwig · Dietzenbach, DE

Key dates

Filing date	Feb 3, 2012
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Jun 2, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D7/32
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to the use of manganese or iron complexes which, as well as a tetraoxolene unit, contain two macrocyclic, N-containing ligands, especially cyclen or cyclam ligands, in washing and cleaning compositions in the form of granules or powder or solution or suspension for bleaching of colored stains both on textiles and on hard surfaces. The invention also relates to washing and cleaning compositions which comprise such complexes as bleach activators and to the use thereof for textile washing or for dishwashing detergents and other uses in personal care and other areas.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.