[EN] COMPLEXES AND THEIR USE FOR OLEFIN POLYMERIZATION<br/>[FR] COMPLEXES ET LEUR UTILISATION POUR LA POLYMÉRISATION D'OLÉFINES
申请人:SCG CHEMICALS CO LTD
公开号:WO2017060690A1
公开(公告)日:2017-04-13
Permethylpentalene based metallocene complexes are disclosed. The complexes are effective catalysts/initiators in the polymerisation of olefins. Also disclosed are compositions comprising the metallocene complexes, as well as uses of the complexes and compositions in olefin polymerisation.
Metallocene adduct, its preparation and its application in olefin
申请人:Research Institute of Petroleum Processing, SINOPEC
公开号:US06057467A1
公开(公告)日:2000-05-02
This invention relates to an three-constituent adduct of a metallocene.an ether.an metal halide having the general formula of Cp'MQ.sub.2.RXR'.nM'Q.sub.2/n, where Cp' is a substituted or an unsubstituted dicyclopentadienyl, M is zirconium or titanium, RXR' is tetrahydrofuran or diethylether, M' is alkali metal or alkali earth metal, n=1 or 2. The adduct can be exposed to air for several hours or stored in nitrogen atmosphere for a long period of time, which is prepared by means of a simple and convenient process without further separation and purification and used directly as a catalyst for polymerization of olefins.
(Di)Silicon Bridged Metallocenes that Produce Polyethylene with Broad Molecular Weight Distribution and High Molecular Weight
申请人:ExxonMobil Chemical Patents Inc.
公开号:US20190144571A1
公开(公告)日:2019-05-16
This invention relates to catalyst systems comprising a catalyst compound having a bridged group 4 metal metallocene (where the bridge preferably contains an (Me
2
Si)
2
group, an activator, and a support material. In some embodiments, the present disclosure provides for polyolefins and a process for producing a polyolefin composition comprising contacting at least one olefin with a catalyst system.
Bis-Schiff base ligand-containing mono-metallocene olefin polymerization catalyst, its preparation process and application
申请人:China Petroleum & Chemical Corporation
公开号:US06747105B2
公开(公告)日:2004-06-08
A catalyst for olefin polymerization having the following structural formula (I):
wherein R1 is selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy, or C6-C12 aryl, R2 and R2′ are respectively selected from hydrogen and C1-C4 alkyl, R3 is selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy and C6-C12 aryl, and M is selected from Ti, Zr, and Hf The catalyst is suitable for olefin polymerization to yield polymerized products with high molecular weight and high insertion rate of comonomers.