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公开(公告)号:US20190248935A1
公开(公告)日:2019-08-15
申请号:US16250710
申请日:2019-01-17
IPC分类号: C08F210/16 , C08F210/02 , C08F210/06 , C08F236/04 , C08F236/20 , C08F4/64 , B01J31/18
CPC分类号: C08F210/16 , B01J31/183 , B01J2231/12 , B01J2531/49 , C08F4/64113 , C08F210/02 , C08F210/06 , C08F236/04 , C08F236/20 , C08F2800/20
摘要: A process to produce a branched ethylene-α-olefin diene elastomer comprising combining a catalyst precursor and an activator with a feed comprising ethylene, C3 to C12 α-olefins, and a dual-polymerizable diene to obtain a branched ethylene-α-olefin diene elastomer; where the catalyst precursor is selected from pyridyldiamide and quinolinyldiamido transition metal complexes. The branched ethylene-α-olefin diene elastomer may comprise within a range from 40 to 80 wt % of ethylene-derived units by weight of the branched ethylene-α-olefin diene elastomer, and 0.1 to 2 wt % of singly-polymerizable diene derived units, 0.1 to 2 wt % of singly-polymerizable diene derived units, and the remainder comprising C3 to C12 α-olefin derived units, wherein the branched ethylene-α-olefin diene elastomer has a weight average molecular weight (Mw) within a range from 100 kg/mole to 300 kg/mole, an average branching index (g′avg) of 0.9 or more, and a branching index at very high Mw (g′1000) of less than 0.9.
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公开(公告)号:US20210122843A1
公开(公告)日:2021-04-29
申请号:US17121240
申请日:2020-12-14
发明人: Jo Ann M. Canich , John R. Hagadorn , Rhutesh K. Shah , Florin Barsan , Sarah J. Mattler , Chase A. Eckert , Zhifeng Bai
IPC分类号: C08F4/6592 , C08F4/659 , C08F4/649 , C08F2/38 , C08F210/18 , C08F210/16 , C08J3/24 , C09J123/16
摘要: The present disclosure provides methods for producing an olefin polymer by contacting a C3-C40 olefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C3-C40 olefin-ethylene-diene terpolymer typically comprising from 30 to 55 mol % ethylene, from 69.09 to 45 mol % C3 to C40 comonomer, and from 0.01 to 7 mol % diene wherein the Tg of the terpolymer is −28° C. or less. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.
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