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    Process to form ethylene/alpha-olefin interpolymers
    3.
    发明授权
    Process to form ethylene/alpha-olefin interpolymers 有权

    公开(公告)号：US10167383B2

    公开(公告)日：2019-01-01

    申请号：US15525553

    申请日：2015-12-18

    申请人： Dow Global Technologies LLC

    发明人： Thomas W. Karjala ,  Jorge Rubalcaba ,  Edward O. Madenjian ,  Curvel Hypolite ,  Pradeep Jain

    IPC分类号： C08L23/08 ,  B01J19/18 ,  B01J19/24

    摘要： The invention provides a process to form a “first composition comprising a first ethylene/α-olefin interpolymer and a second ethylene/α-olefin interpolymer,” said process comprising polymerizing a first mixture comprising ethylene, an α-olefin, and optionally a polyene, in a stirred tank reactor to form a first ethylene/α-olefin interpolymer, and transferring at least some of the first ethylene/α-olefin interpolymer to a loop reactor, and polymerizing, therein, a second mixture comprising ethylene, an alpha-olefin, and optionally a polyene, in the presence of the first ethylene/α-olefin interpolymer, to form the “first composition comprising the first ethylene/α-olefin interpolymer and the second ethylene/α-olefin interpolymer.” The invention also provides a polymerization reactor configuration comprising at least the following: a stirred tank reactor followed by a loop reactor.

    Process for adding a chain shuttling agent
    5.
    发明授权
    Process for adding a chain shuttling agent 有权

    公开(公告)号：US10392450B2

    公开(公告)日：2019-08-27

    申请号：US15561723

    申请日：2016-03-22

    申请人： Dow Global Technologies LLC

    发明人： Thomas W. Karjala ,  Brandon Fails ,  Jacob Veldman ,  Curvel Hypolite ,  James B. Crim ,  Anthony J. Castelluccio ,  Ludovicus J C Sluijts ,  Pradeep Jain

    IPC分类号： C08F2/38 ,  C08F2/00 ,  C08F210/16 ,  C08F297/08 ,  C08F210/06

    摘要： A process to form a block copolymer comprising two or more regions or segments of differentiated polymer composition or properties, including feeding a first mixture that includes a chain shuttling agent, a solvent, the one or more monomers, and optionally hydrogen into a first reactor or reactor zone, feeding a second mixture that includes at least one olefin polymerization catalyst and at least one cocatalyst into the first reactor or reactor zone, contacting the first mixture and the second mixture under polymerization conditions in the first reactor or reactor zone to form a reaction mixture that is characterized by the formation of polymer chains from the monomers, allowing polymerization to occur in the first reactor or reactor zone and/or a second reactor or reactor zone to form polymer chains that are differentiated from the polymer chains, such that the resultant polymer has two or more chemically or physically distinguishable blocks.

    Nucleation with a block composite nucleator
    7.
    发明授权
    Nucleation with a block composite nucleator 有权

    公开(公告)号：US10155861B2

    公开(公告)日：2018-12-18

    申请号：US15505475

    申请日：2015-08-20

    申请人： Dow Global Technologies LLC

    发明人： Yi Jin ,  Kim L. Walton ,  Morgan M. Hughes ,  Thomas W. Karjala ,  Lamy J. Chopin, III ,  Dean Lee ,  Rongjuan Cong

    IPC分类号： C08L53/00 ,  C08L23/14 ,  C08L23/16 ,  C09J153/00 ,  C09J123/14 ,  C09J123/20

    摘要： A composition includes (A) 30-95 wt % of a random or homogeneous propylene-based interpolymer having: (i) a comonomer content of at least one of C2 and C4-10 α-olefins of 7 wt % to 49 wt % based on the total weight of the propylene-based interpolymer, (ii) a density of 0.90 g/cc or less, and (iii) an MFR of 1 g/10 min or greater (230° C./2.16 kg); and (B) 5-70 wt % of a block composite nucleator comprising: (1) a first polymer that includes polypropylene; (2) a second polymer that includes an alpha-olefin based polymer, the alpha-olefin being selected from at least one of a C2 and C4-10 α-olefins, and (3) a block copolymer having a first segment and a second segment, the first segment of the block copolymer having the same composition as the first polymer in the block composite nucleator and the second segment of the block copolymer having the same composition as the second polymer of the block composite nucleator.