Metallocene compositions
US6380122B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Jul 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: wherein:M is a metal of Group 4, 5, or 6 of the Periodic Table;R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom, or are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen;R5 and R6 are identical or different, are one of a hydrogen atom, a halogen atom, a C1-C10 alkyl group, which may be halogenated, a C6-C10 aryl group, which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR215, —SR15, —OR15, —OSiR315 or —PR215 radical, wherein: R1…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.