Phosphine-substituted vinyl containing metallocene catalyst, preparation process and the application of the same
US7595413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2008 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Feb 8, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a phosphine-substituted vinyl containing metallocene catalyst, and also to the preparation process of the same as well as to the application of the catalyst. The catalyst has the general formula of Cp2(CR1═CR2(P(R3)2))MX, wherein Cp is a ligand containing cyclopentadiene having 1˜5 substitutions, of which two neighbors connecting to each other to form fused rings having more than two members; R1-R3 is selected from the groups consisting of hydrogen, C1˜C18 alkyl or perfluoro-alkyl, C6˜C24 aralkyl or alkaryl; M is selected from the groups consisting of metals of the IVB group; and X is selected from the groups consisting of halogens, C1˜C24 alkyl alkoxyl, silicone or alkaryl. With aluminoxane or modified aluminoxane, aluminum alkyl, halogenated aluminum alkyl or their mixture as the catalyst promoter the phosphine-substituted vinyl containing metallocene catalyst may be employed as the major catalyst for the polymerization or copolymerization of alpha-olefin. Due to its high activity, the polymerization may occur at both high and low temperatures with the polymer having higher molecular weight and broader molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.