Method for reduction of aqueous phase polymer formation in suspension polymerization
US5414062A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Mar 10, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for reducing the formation of aqueous phase polymer during the suspension polymerization of unsaturated monomer is disclosed. The reduction of polymer formation in the aqueous phase and subsequent fouling of polymerization reactor surfaces is achieved by incorporating an effective amount of a water-soluble peroxide compound into the aqueous phase used for the suspension polymerization. Hydrogen peroxide, sodium perborate and sodium percarbonate are effective aqueous phase inhibitors for use in the preparation of crosslinked polystyrene beads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.