Method for increasing diene conversion in EPDM type polymerizations
US6329477A · kind A · utility
19Cited by
25References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Mar 2, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a method of making polymer compositions, e.g. EPDM compositions, in a multistage reactor with monomers chosen from ethylene, C.sub.3 -C.sub.8 alpha olefins, and a non conjugated diene. In particular, the invention relates to a process for improving diene conversion during the manufacture of the aforementioned polymer compositions by use of a multistage reactor and a metallocene catalyst system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.