Process and catalyst for producing polyethylene having a broad molecular weight distribution
US4935474A · kind A · utility
167Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Apr 26, 1985 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Apr 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyolefins having a broad molecular weight distribution are obtained by polymerizing ethylene or higher alpha-olefins in the presence of a catalyst system comprising two or more metallocenes each having different propagation and termination rate constants and alumoxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.