Process for narrowing short-chain branching distribution in two-step ethylene polymerizations and products
US7151145B1 · kind B1 · utility
4Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2005 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jul 13, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved two-step polymerization process wherein ethylene homopolymer is produced in a first reactor and ethylene copolymer having narrowed short-chain branching distribution is prepared in a second reactor. Narrowed short-chain branching distribution of the copolymer is achieved by including specific silane modifiers in the second reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.