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    Heterophasic copolymer
    11.
    发明授权
    Heterophasic copolymer 有权

    公开(公告)号：US11299610B2

    公开(公告)日：2022-04-12

    申请号：US14904150

    申请日：2014-07-10

    Applicant: BOREALIS AG

    Inventor： Luigi Resconi ,  Wilfried Toltsch ,  Jingbo Wang ,  Markus Gahleitner

    IPC: C08L23/10 ,  C08L23/14 ,  C08L23/16 ,  C08F4/659

    Abstract: A heterophasic propylene ethylene copolymer having an MFR2 of 0.5 to 100 g/10 min and obtained using single site catalysis comprising: (i) at least 40 wt % of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % comonomer; (ii) at least 10 wt % of an ethylene propylene rubber dispersed in the matrix, said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to 60%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 18 and 70 wt. %; and wherein the intrinsic viscosity of the XS fraction of said heterophasic propylene ethylene copolymer is greater than the intrinsic viscosity of the matrix fraction of said copolymer.

    Process for preparing propylene copolymer compositions
    13.
    发明授权
    Process for preparing propylene copolymer compositions 有权

    公开(公告)号：US10787528B2

    公开(公告)日：2020-09-29

    申请号：US16067170

    申请日：2016-12-27

    Applicant: BOREALIS AG

    Inventor： Kristin Reichelt ,  Kauno Alastalo ,  Klaus Nyfors ,  Luigi Resconi

    IPC: C08F210/06 ,  C08J5/18 ,  C08L23/14 ,  C08F2/01 ,  C08F2/12 ,  C08F2/00 ,  C08F2/14

    Abstract: The present invention relates to an olefin polymerization process for producing propylene copolymer composition (P), wherein propylene, C4 to C10 α-olefin and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst in a multistage polymerization process comprising at least two polymerization reactors, wherein the copolymer composition is bimodal with respect to the content of C4 to C10 α-olefin and, if present, to ethylene. Further, the invention is directed to the propylene copolymer composition being bimodal with respect to the content of C4 to C10 α-olefin and optionally to ethylene, and use of said propylene copolymer compositions for producing articles.

    Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process
    14.
    发明授权
    Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process 有权

    公开(公告)号：US10301411B2

    公开(公告)日：2019-05-28

    申请号：US15304629

    申请日：2015-04-15

    Applicant: BOREALIS AG

    Inventor： Noureddine Ajellal ,  Luigi Resconi ,  Gerhard Hubner

    IPC: C07F17/00 ,  C08F4/6592 ,  C08F210/18 ,  C08F210/16 ,  C07F7/12 ,  C07C2/34 ,  C07F7/08 ,  C08F4/659

    Abstract: Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) wherein M is Hf X is a sigma ligand, L is a bridge of the formula —SiR82—, wherein each R8 is independently a C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl n is 0, 1 or 2 R1 and R1′ are the same or can be different and can be a linear or branched C1-C6-alkyl group, R2 and R2′ are the same or are different and are a CH2—R9 group, with R9 being H or linear or branched C1-C6-alkyl group R5 and R5′ are the same or are different and can be H or a linear or branched C1-C6-alkyl group or a OR group, wherein R is a C1-C6-alkyl group R6 and R6′ are the same or are different and can be H or a C(R10)3 group, with R10 being the same or different and R10 can be H or a linear or branched C1-C6-alkyl group or R5 and R6 and/or R5′ and R6′ taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety, and R7 and R7′ can be the same or are different and can be H or a linear or branched C1-C6-alkyl group (ii) an aluminoxane cocatalyst and/or (iii) a boron containing cocatalyst and (iv) optionally an aluminum alkyl compound.

    Process for the preparation of a propylene polymer
    15.
    发明授权
    Process for the preparation of a propylene polymer 有权

    公开(公告)号：US10287375B2

    公开(公告)日：2019-05-14

    申请号：US14897150

    申请日：2014-06-09

    Applicant: BOREALIS AG

    Inventor： Wilfried Töltsch ,  Luigi Resconi ,  Kristin Reichelt

    IPC: C08F2/01 ,  C08F4/6592 ,  C08F210/06 ,  C08F210/16 ,  C08F2/00 ,  C08F4/659 ,  C08F4/70 ,  C08L23/12

    Abstract: A process for the preparation of a propylene polymer in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a prepolymerisation step prepolymerising a single site catalyst in the presence of propylene and optionally at least one C2-10 alpha olefin comonomer and in the presence of hydrogen or in the absence of hydrogen; (II) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, with the pre-polymerised catalyst of step (I) in the presence of hydrogen; and subsequently (III) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (II) and optionally in the presence of hydrogen so as to form a propylene homopolymer or copolymer; wherein the amount of hydrogen fed to the pre-polymerisation step (I) is at most 15% of the total amount of hydrogen fed to steps (I) and (II) of the polymerisation process.

    PROCESS FOR THE PREPARATION OF A PROPYLENE POLYMER
    18.
    发明申请
    PROCESS FOR THE PREPARATION OF A PROPYLENE POLYMER 审中-公开
    制备丙烯聚合物的方法

    公开(公告)号：US20160115266A1

    公开(公告)日：2016-04-28

    申请号：US14897150

    申请日：2014-06-09

    Applicant: BOREALIS AG

    Inventor： Wilfred Töltsch ,  Luigi Resconi ,  Kristin Reichelt

    IPC: C08F210/16

    CPC classification number: C08F210/16 ,  C08F2/001 ,  C08F4/65912 ,  C08F4/70 ,  C08F2410/01 ,  C08L23/12 ,  C08F10/06 ,  C08F4/6492 ,  C08F4/65927 ,  C08F210/06 ,  C08F2500/05 ,  C08F2500/17 ,  C08L23/16

    Abstract: A process for the preparation of a propylene polymer in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a prepolymerisation step prepolymerising a single site catalyst in the presence of propylene and optionally at least one C2-10 alpha olefin comonomer and in the presence of hydrogen or in the absence of hydrogen; (II) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, with the pre-polymerised catalyst of step (I) in the presence of hydrogen; and subsequently (III) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (II) and optionally in the presence of hydrogen so as to form a propylene homopolymer or copolymer; wherein the amount of hydrogen fed to the pre-polymerisation step (I) is at most 15% of the total amount of hydrogen fed to steps (I) and (II) of the polymerisation process.

    Abstract translation: 一种在多段聚合方法中在单中心催化剂存在下制备丙烯聚合物的方法，所述方法包括：（I）在预聚合步骤中，在丙烯和任选的至少一个C 2的存在下预聚合单中心催化剂 -10α-烯烃共聚单体，并且在氢存在下或在不存在氢的情况下; （II）在淤浆聚合步骤中，将聚合丙烯和任选的至少一种C 2-10α-烯烃共聚单体与步骤（I）的预聚合催化剂在氢气存在下聚合; 和随后（III）在气相聚合步骤中聚合丙烯和任选的至少一种C 2-10α-烯烃共聚单体，在步骤（II）的催化剂和聚合物存在下，任选地在氢的存在下，形成丙烯均聚物 或共聚物; 其中进料到预聚合步骤（I）中的氢的量为进料到聚合方法的步骤（I）和（II）的氢的总量的至多15％。

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