Composition comprising macrocyclic tetra-amido metal complex as bleaching catalyst
US7115549B2 · kind B2 · utility
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11References
12Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3932
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a laundry bleaching composition comprising: a) a macrocycilc tetra amido N-donor metal-ligand complex (preferably, 5,6-benzo-3,8,11,13-tetraoxo-2,2,9,9,12,12-hexamethyl-1,4,7,10-tetraaza-cyclo-tridecane), and b) an alkyl benzene sulphonate surfactant, said composition being substantially devoid of any added peroxygen bleach or a peroxy-based or peroxy-generating bleach system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.