Production of E-B copolymers with a single metallocene catalyst and a single monomer
US5753785A · kind A · utility
41Cited by
4References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Dec 16, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process of polymerizing ethylene with a catalyst using a single metallocene catalyst comprising a bridged metallocene compound having two cyclopentadienyl rings, one substituted with a bulky group in a distal position and one substituted such that a fused ring, substituted or unsubstituted, is formed, which produces a copolymer of ethylene. The metallocene catalyst promotes simultaneous oligomerization of a fraction of ethylene to form a comonomer in situ and copolymerization of the remaining ethylene and the comonomer to form a copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.