Catalyst obtained by prepolymerization of polyolefin and olefin polymerization method using the same
US7098285B2 · kind B2 · utility
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129References
16Claims
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Key dates
| Filing date | Dec 15, 2001 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Oct 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a prepolymerized olefin polymerization catalyst and olefin polymerization method using the same. More particularly, the present invention provides a prepolymerized catalyst that is encapsulated with macromonomers produced by polymerizing olefin monomers with a vinyl-terminated polysiloxane compound in the presence of a solid titanium catalyst for olefin polymerization having been previously surface treated with silane compounds containing two or more vinyl groups, and a method for producing polyolefin having a high melt strength using the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.