Catalysts for producing broad molecular weight distribution polyolefins in the absence of added hydrogen
US8288487B2 · kind B2 · utility
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51References
25Claims
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Key dates
| Filing date | Jul 6, 2010 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and these polymers can have a Mn in a range from about 9,000 to about 30,000 g/mol, and a short chain branch content that decreases as molecular weight increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.