Nodular copolymers comprising narrow MWD alpha-olefin copolymers coupled by non-conjugated dienes
US4716207A · kind A · utility
32Cited by
18References
32Claims
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Key dates
| Filing date | Sep 4, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Sep 4, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of preparing a nodular polymer by preparing a copolymer chain and coupling it to a coupling agent. The coupling agent is a non-conjugated diene. Preferably the non-conjugated diene has both double bonds Ziegler catalyst polymerizable. The preferred product comprises a norbornadiene coupled ethylene copolymer wherein the ethylene copolymer has a M.sub.z /M.sub.m of less than 2.0 and a M.sub.w /M.sub.n of less than 1.8 before coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.