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    Ziegler-natta catalyst and preparation thereof
    4.
    发明授权
    Ziegler-natta catalyst and preparation thereof 有权

    公开(公告)号：US10118977B2

    公开(公告)日：2018-11-06

    申请号：US15536919

    申请日：2015-12-17

    申请人： Borealis AG

    发明人： Victor Sumerin ,  Joseph Thorman

    IPC分类号： C08F210/16

    摘要： This invention relates to a solid MgCl2 based Natta catalyst component for producing olefin polymers and preparation of said catalyst component. Further the invention relates to a Ziegler Natta catalyst comprising said solid catalyst component, Group 13 metal compound as cocatalyst and optionally external additives. The invention further relates to the use of said catalyst component in producing olefin polymers, especially ethylene polymers with desired properties.

    CABLE JACKET COMPOSITION
    5.
    发明申请
    CABLE JACKET COMPOSITION 有权

    公开(公告)号：US20210095108A1

    公开(公告)日：2021-04-01

    申请号：US16499352

    申请日：2018-04-06

    申请人： Borealis AG

    发明人： Anna Hjärtfors ,  Yi Liu ,  Joseph Thorman ,  Victor Sumerin

    IPC分类号： C08L23/08 ,  C08F210/16 ,  G02B6/44 ,  H01B3/44

    摘要： The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cm3 and MFR2 of 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.

    Process for producing polyethylene
    8.
    发明授权
    Process for producing polyethylene 有权

    公开(公告)号：US10800864B2

    公开(公告)日：2020-10-13

    申请号：US16438690

    申请日：2019-06-12

    申请人： BOREALIS AG

    发明人： Victor Sumerin ,  Joseph Thorman ,  Jani Aho ,  Markku Vahteri ,  Ravindra Tupe ,  Jarmo Kela

    IPC分类号： C08F210/16 ,  C08L23/16

    摘要： The present invention relates to a process for producing ethylene copolymers in a multistage process comprising at least one slurry phase polymerization stage and at least one gas phase polymerization stage in the presence of Ziegler Natta catalyst comprising a solid catalyst component, a cocatalyst of a compound of group 13 metal and an external additive selected from alkoxysilanes of formula (I) R1nSi(OR2)4-n, (I) where n is an integer 0 to 3, each R1 are equal or different and are selected among H, halogen, alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the R′groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, provided that all R1 are not hydrogen, R2 are equal or different and are selected among alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the OR2 groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, halogen is Br, Cl or F. The invention further relates to the catalysts and use thereof in said multistage process r for producing ethylene copolymers having melt flow rate ratio FRR21/5 at least 40 and/or polydispersity index PDI of at least 27.

    Process for the preparation of solid catalyst
    10.
    发明授权
    Process for the preparation of solid catalyst 有权

    公开(公告)号：US11384170B2

    公开(公告)日：2022-07-12

    申请号：US16771307

    申请日：2018-12-19

    申请人： BOREALIS AG

    发明人： Alexander Reznichenko ,  Noureddine Ajellal ,  Joseph Thorman ,  Bernard Binks

    IPC分类号： C08F4/6592 ,  C08F10/02 ,  C08F10/06 ,  C07F7/00 ,  C08F4/659

    摘要： A process for the preparation of a solid olefin polymerization catalyst or a solid olefin polymerization catalyst component comprising the steps of: (a) forming a liquid/liquid emulsion of (i) a first organic liquid comprising at least one olefin polymerization catalyst component and (ii) an optionally halogenated hydrocarbon liquid immiscible therewith; where the first organic liquid forms the dispersed phase and the optionally halogenated hydrocarbon liquid forms the continuous phase of the liquid/liquid emulsion and wherein the dispersed phase forms droplets in the continuous phase; and (b) transforming the droplets of the dispersed phase to solid particulate particles comprising said at least one olefin polymerization catalyst component, wherein the liquid/liquid emulsion is stabilized with a solid particulate stabilizer.