Heavy metal adjuncts, their preparation and use
US4626374A · kind A · utility
15Cited by
5References
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 primaryC11D3/3932
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A stable heavy metal adjunct, particularly manganese adjunct, for use as a peroxygen bleach catalyst is disclosed which comprises a matrix of a heavy meal salt provided with a surface powder coating of desiccant microsized powdered material having a mean particle size of less than 25 .mu.m. A process for preparing said adjunct and bleaching and detergent compositions containing said adjunct are also disclosed. Preferred heavy metal is manganese and preferred surface powder coating is with microsized silicon dioxide (silica).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.