High molecular weight polysytrene production by vinyl acid catalyzed free radical polymerization
US5990255A · kind A · utility
6Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F12/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is a free radical bulk polymerization process for the preparation of high molecular weight polymers from vinyl aromatic monomers, characterized in that the polymerization is conducted in the presence of a vinyl acid containing either a sulfur or phosphorus atom within the acid functional group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.