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    Low melting PP homopolymer with high content of regioerrors and high molecular weight
    2.
    发明授权
    Low melting PP homopolymer with high content of regioerrors and high molecular weight 有权

    公开(公告)号：US10519259B2

    公开(公告)日：2019-12-31

    申请号：US15027129

    申请日：2014-10-23

    Applicant: BOREALIS AG

    Inventor： Luigi Resconi ,  Kristin Reichelt

    IPC: C08F110/06 ,  C08L23/12 ,  F16L9/12

    Abstract: Disclosed is a polypropylene homopolymer having a melting temperature Tm of less than 150° C., 2,1 regio-defects of above 2.0% determined by 13C-NMR spectroscopy, and a weight average molecular weight Mw of above 100 kg/mol. Also disclosed are a process for the preparation of the homopolymer and a polypropylene blend containing the homopolymer. Further disclosed are a pipe, sheet, film, fiber, moulded article, and extrusion coating made from the homopolymer or polypropylene blend.

    PROCESS FOR PREPARING POLYMER COMPOSITIONS
    5.
    发明申请
    PROCESS FOR PREPARING POLYMER COMPOSITIONS 审中-公开

    公开(公告)号：US20190002610A1

    公开(公告)日：2019-01-03

    申请号：US15735891

    申请日：2016-06-29

    Applicant: BOREALIS AG

    Inventor： Wilfried Töltsch ,  Luigi Resconi ,  Kristin Reichelt

    IPC: C08F210/06 ,  C08J5/18 ,  B32B27/08 ,  B32B27/32

    Abstract: The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 α-olefin monomer, preferably 1-butene- and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 α-olefin, preferably 1-butene-derived comonomer units in an amount of from 0,5 to 15 wt % and ethylene-derived comonomer units in an amount of 0 to 3 wt %, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R3)z(R2O)ySi(R1)x, and ii) a solid catalyst component being free of external carrier material.

    Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process
    6.
    发明授权
    Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process 有权

    公开(公告)号：US10167355B2

    公开(公告)日：2019-01-01

    申请号：US15304638

    申请日：2015-04-15

    Applicant: BOREALIS AG

    Inventor： Noureddine Ajellal ,  Roberta Pellecchia ,  Luigi Resconi ,  Vyatcheslav V. Izmer ,  Dmitry S. Kononovich ,  Alexander Z. Voskoboynikov

    IPC: C08F4/6592 ,  C08F4/642 ,  C08F4/643 ,  C08F210/16

    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 or Zr 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, with the proviso that if R5 and R6 as well as R5′ and R6′ taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then R2 and R2′ are not a C1-alkyl group; 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 (iii) optionally a boron containing cocatalyst.

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