中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.011 seconds)

    CATALYST AND PREPARATION THEREOF
    1.
    发明申请
    CATALYST AND PREPARATION THEREOF 有权

    公开(公告)号：US20210079128A1

    公开(公告)日：2021-03-18

    申请号：US16771306

    申请日：2018-12-20

    Applicant: BOREALIS AG

    Inventor： Alexander REZNICHENKO ,  Jari-Jussi RUSKEENIEMI ,  Joseph THORMAN ,  Xiao Dong CHEN ,  Victor SUMERIN

    IPC: C08F4/651 ,  C08F210/16 ,  B01J4/00 ,  C08F4/654

    Abstract: The present invention relates to a process for producing of solid particulate olefin polymerisation catalyst or catalyst carrier comprising forming a solution of the catalyst or a catalyst carrier in a solvent, subjecting the solution into an atomization by spraying the solution via a capillary vibrating spray nozzle with a capillary orifice having a diameter of 5 to 100 μm generating a laminar jet of liquid, which disintegrates into liquid droplets entering into the spray-dryer, transforming the droplets with aid of a gas to solid particulate catalyst or carrier in the spray-dryer and recovering the solid particulate olefin polymerisation catalyst or carrier having particle size distribution defined by a volumetric SPAN of 0.7 or less. The invention further relates to the catalyst produced by the methods, and use thereof in olefin polymerisation process.

    PROCESS FOR THE PREPARATION OF SOLID CATALYST
    2.
    发明申请
    PROCESS FOR THE PREPARATION OF SOLID CATALYST 有权

    公开(公告)号：US20210179744A1

    公开(公告)日：2021-06-17

    申请号：US16771307

    申请日：2018-12-19

    Applicant: BOREALIS AG

    Inventor： Alexander REZNICHENKO ,  Noureddine AJELLAL ,  Joseph THORMAN ,  Bernard BINKS

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

    Abstract: A process for the preparation of a solid olefin polymerisation catalyst or a solid olefin polymerisation 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

    PROCESS FOR THE PREPARATION OF MULTIMODAL HIGH DENSITY POLYETHYLENE
    3.
    发明申请
    PROCESS FOR THE PREPARATION OF MULTIMODAL HIGH DENSITY POLYETHYLENE 有权

    公开(公告)号：US20210147660A1

    公开(公告)日：2021-05-20

    申请号：US17056855

    申请日：2019-05-30

    Applicant: BOREALIS AG

    Inventor： Anh Tuan TRAN ,  Alexandra Romina ALBUNIA ,  Joy Jie CHENG ,  Joseph THORMAN ,  John JAMIESON ,  Ravindra TUPE

    IPC: C08L23/06 ,  C08F210/02 ,  C08F210/08 ,  C08F2/00 ,  C08F2/34 ,  B29C45/00 ,  B29C43/00

    Abstract: The invention provides a process for the preparation of a multimodal high density polyethylene (HDPE) having a melt flow rate (MFR2) of 0.1 to 4.0 g/10 min, said process comprising: (i) polymerising ethylene in a first polymerisation stage in the presence of a Ziegler-Natta catalyst to prepare a first ethylene homopolymer having a MFR2 from 10 to 500 g/10 min; (ii) polymerising ethylene in a second polymerisation stage in the presence of said catalyst and said first ethylene homopolymer to prepare an ethylene homopolymer mixture comprising said first ethylene homopolymer and a second ethylene homopolymer, said mixture having a MFR2 from 50 to 1000 g/10 min; and (iii) polymerising ethylene and at least one alpha-olefin comonomer in a third polymerisation stage in the presence of said catalyst and said ethylene homopolymer mixture to prepare said multimodal HDPE.

    PROCESS FOR PRODUCING POLYETHYLENE
    4.
    发明申请
    PROCESS FOR PRODUCING POLYETHYLENE 审中-公开

    公开(公告)号：US20190292284A1

    公开(公告)日：2019-09-26

    申请号：US16438690

    申请日：2019-06-12

    Applicant: BOREALIS AG

    Inventor： Victor SUMERIN ,  Joseph THORMAN ,  Jani AHO ,  Markku VAHTERI ,  Ravindra TUPE ,  Jarmo KELA

    IPC: C08F210/16 ,  C08L23/16

    Abstract: 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 (1) 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 10 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 R1 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 PRODUCING POLYETHYLENE
    7.
    发明申请
    PROCESS FOR PRODUCING POLYETHYLENE 审中-公开

    公开(公告)号：US20180030179A1

    公开(公告)日：2018-02-01

    申请号：US15548882

    申请日：2016-02-04

    Applicant: BOREALIS AG

    Inventor： Victor SUMERIN ,  Joseph THORMAN ,  Jani AHO ,  Markku VAHTERI ,  Ravindra TUPE ,  Jarmo KELA

    IPC: C08F210/16

    CPC classification number: C08F210/16 ,  C08L23/16 ,  C08F4/6465 ,  C08F2/001 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/07 ,  C08F4/6492 ,  C08F4/6555

    Abstract: 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 10 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 R1 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.

    Ziegler-Natta Catalyst and Preparation Thereof
    8.
    发明申请
    Ziegler-Natta Catalyst and Preparation Thereof 审中-公开

    公开(公告)号：US20170349683A1

    公开(公告)日：2017-12-07

    申请号：US15536919

    申请日：2015-12-17

    Applicant: Borealis AG

    Inventor： Victor SUMERIN ,  Joseph THORMAN

    IPC: C08F210/16

    CPC classification number: C08F210/16 ,  C08F210/08 ,  C08F2500/03 ,  C08F4/651

    Abstract: 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.

Patent Agency Ranking