The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2009
Filed:
Feb. 08, 2008
Jianjun Yi, Beijing, CN;
Wenhua Sun, Beijing, CN;
Peng Hao, Beijing, CN;
Shu Zhang, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
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 Cp(CR═CR(P(R)))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; R-Ris selected from the groups consisting of hydrogen, C˜Calkyl or perfluoro-alkyl, C˜Caralkyl 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, C˜Calkyl 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.