Olefin addition polymerization catalyst composition
US6074977A · kind A · utility
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8Claims
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Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Catalyst compositions that are highly tolerant of catalyst poisons comprising a cationic or zwitterionic Group 4 metal complex of the constrained geometry type and an organoaluminum hydrocarbyloxide compound according to the formula R.sup.1.sub.2 Al(OR.sup.2), PA1 wherein R.sup.1 and R.sup.2 independently each ocurrence are C.sub.1-30 hydrocarbyl, PA1 the molar ratio of complex to organoaluminum hydrocarbyloxide compound being from 1:0.1 to 1:100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.