Manganese adjuncts, their preparation and use
US4626373A · kind A · utility
33Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1984 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Nov 5, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A stable manganese adjunct for use as a bleach catalyst is obtained by having a manganese (II) cation bound to a "ligand" forming either a true complex compound, a water-insoluble salt compound, or an ion-binding compound by absorption, which compound is then protectively embedded in a matrix of water-soluble or water-dispersible material. The adjunct is particularly suitable for incorporation in fabric-washing powder compositions containing a peroxide bleach without causing instablity to the composition and brown discoloration due to MnO.sub.2 formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.