Catalyst systems for producing polyolefins having a broad molecular weight distribution
US4975403A · kind A · utility
110Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides catalyst systems for use in the polymerization of olefins to produce a polymer product having a broad molecular weight distribution. The catalyst system includes at least two different chiral, stereo-rigid metallocene catalysts of the formula R"(C.sub.5 (R').sub.4).sub.2 MeQp and an aluminum compound, preferably an alumoxane. These catalyst systems are especially useful in the polymerization of propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.