Unsaturated nitrogenous compounds as electron donors for use with ziegler-natta catalysts
US6436864B1 · kind B1 · utility
16Cited by
38References
27Claims
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Key dates
| Filing date | Oct 6, 1999 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Oct 6, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Unsaturated nitrogenous compounds are used as electron donors in conjunction with catalytic polymerization of addition polymerizable monomers such as olefins, using supported Ziegler-Natta catalysts. The electron donors may be used in the preparation of catalyst systems, thus serving as “internal” electron donors, or they may be added during or just prior to polymerization, as an “external” electron donor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.