Process for making bleach activator
US4731196A · kind A · utility
11Cited by
19References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3932
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A manganese exchanged Zeolite A laundry bleach activator is made in a single reaction vessel by mixing dry Zeolite A with an inorganic acid in an amount to lower the pH to 8.0-10.5, adding and mixing in an aqueous manganese (II) salt, adding and mixing in a chelating agent such as sodium tripolyphosphate, adding and mixing in a binding agent such as carboxymethylcellulose, mixing and adding water to cause the Mn-exchanged Zeolite A, chelating agent and binder to agglomerate to form small granules and drying the resulting small granules for use as a bleach activator in laundry detergent compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.