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    CATALYST SYSTEM FOR MULTI-BLOCK COPOLYMER FORMATION
    22.
    发明申请
    CATALYST SYSTEM FOR MULTI-BLOCK COPOLYMER FORMATION 审中-公开

    公开(公告)号：US20200247918A1

    公开(公告)日：2020-08-06

    申请号：US16493961

    申请日：2018-03-14

    Applicant: Dow Global Technologies LLC

    Inventor： David D. Devore ,  Daniel J. Arriola ,  Gordon R. Roof ,  Jeffrey C. Munro ,  Andrew J. Young ,  Edmund M. Carnahan

    IPC: C08F4/64 ,  C08F210/16

    Abstract: The present disclosure relates to a catalyst system for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization procatalyst, (B) a second olefin polymerization procatalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by procatalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

    Polyolefin composition and method of producing the same
    24.
    发明授权
    Polyolefin composition and method of producing the same 有权

    公开(公告)号：US10351646B2

    公开(公告)日：2019-07-16

    申请号：US15538686

    申请日：2015-12-28

    Applicant: Dow Global Technologies LLC

    Inventor： Philip P. Fontaine ,  Susan G. Brown ,  Andrew J. Young ,  David M. Pearson ,  Edmund M. Carnahan

    IPC: C08F4/64 ,  C08F4/76 ,  C08F210/16 ,  C08F4/659

    Abstract: The instant invention provides a polyolefin composition and method of producing the same. The olefin polymerization process according to the present invention comprises contacting one or more olefinic monomers with a biphenylphenolic polymerization catalyst under polymerization conditions and in the presence of one or more treated aluminum-based scavengers in a polymerization reactor, wherein said one or more treated aluminum-based scavengers comprise the reaction product of an alkylaluminum or an aluminoxane specie with a compound of the general Formula (I): wherein X is O, N, or S and R is alkyl, aryl, heteroalkyl, heteroaryl, or hydrogen, wherein n=1 if X is O or S and n=1 if X is N, and wherein at least one R is not a hydrogen; Rn—X—H (I); thereby producing a polyolefin composition which comprises less than 50% of the oligomer level of a polyolefin composition produced in an olefin polymerization process in the presence of said one or more untreated aluminum-based scavengers.

    Catalyst system for multi-block copolymer formation
    28.
    发明授权
    Catalyst system for multi-block copolymer formation 有权

    公开(公告)号：US11459409B2

    公开(公告)日：2022-10-04

    申请号：US16494085

    申请日：2018-03-14

    Applicant: Dow Global Technologies LLC

    Inventor： Andrew J. Young ,  Hien Q. Do ,  Brad C. Bailey ,  Matthew D. Christianson ,  Jeffrey C. Munro ,  Edmund M. Carnahan

    IPC: C08F297/08 ,  C08F4/64

    Abstract: The present disclosure relates to a catalyst system for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization procatalyst, (B) a second olefin polymerization procatalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by procatalyst (A) under equivalent polymerization conditions, (C) an activator, and (D) a chain shuttling agent.

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