Method for preparing alpha-olefin/cycloolefin copolymers
US5635573A · kind A · utility
58Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Mar 29, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cycloolefin/alpha-olefin copolymers in a molar ratio from 5/95 to 95/5, optionally including long linear alpha-olefin, branched alpha-olefins and/or polyenes as additional comonomers, are prepared using a cyclopentadienyl metallocene catalyst system based on a transition metal compound from Group 4 of the Periodic Table of Elements. The copolymers have a high molecular weight, a narrow molecular weight distribution and a substantially uniform, random comonomer distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.