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    POLYETHYLENE BLEND FOR A FILM LAYER
    11.
    发明申请
    POLYETHYLENE BLEND FOR A FILM LAYER 有权

    公开(公告)号：US20250101213A1

    公开(公告)日：2025-03-27

    申请号：US18832392

    申请日：2023-01-24

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER ,  Jani AHO

    IPC: C08L23/0807 ,  C08J5/18

    Abstract: Disclosed is a polyethylene blend of a specific multimodal metallocene catalysed linear low density polyethylene (mLLDPE) and a low density polyethylene (LDPE), which provides films with well-balanced properties, especially high dart drop (impact strength), low haze and low sealing initiation temperature.

    MONOLAYER BLOWN FILM
    13.
    发明公开
    MONOLAYER BLOWN FILM 审中-公开

    公开(公告)号：US20240262969A1

    公开(公告)日：2024-08-08

    申请号：US18576833

    申请日：2022-07-05

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER ,  Jani AHO

    IPC: C08J5/18

    CPC classification number: C08J5/18 ,  C08J2323/06 ,  C08J2423/08

    Abstract: Monolayer blown films including a specific blend of Ziegler-Natta catalysed linear low density polyethylene (znLLDPE) and a specific multimodal metallocene catalysed LLDPE, with well-balanced mechanical properties, especially dart drop (impact strength) and tensile modulus.

    PROPYLENE BUTENE COPOLYMER
    15.
    发明申请
    PROPYLENE BUTENE COPOLYMER 有权

    公开(公告)号：US20210395474A1

    公开(公告)日：2021-12-23

    申请号：US17292062

    申请日：2019-11-14

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Pauli LESKINEN ,  Matthias HOFF

    IPC: C08J5/18 ,  C08F297/08

    Abstract: The invention provides a multimodal propylene butene random copolymer having a melt flow rate (MFR2) of 1.0 to 20.0 g/10 min and a butene content of 1.5 to 8.0 wt %, wherein said copolymer is prepared using a single site catalyst and wherein said copolymer comprises (i) 30 to 70 wt % of a propylene butene copolymer (A) having an MFR2 of 0.5 to 20.0 g/10 min and a butene content of 0.5 to 10.0 wt %; and (ii) 70 to 30 wt % of a propylene butene copolymer (B) having an MFR2 of 0.5 to 20.0 g/10 min and a butene content of 1.0 to 8.0 wt %; wherein copolymers (A) and (B) are different.

    PROCESS FOR PRODUCING HETEROPHASIC COPOLYMERS OF PROPYLENE
    17.
    发明申请
    PROCESS FOR PRODUCING HETEROPHASIC COPOLYMERS OF PROPYLENE 审中-公开

    公开(公告)号：US20200231795A1

    公开(公告)日：2020-07-23

    申请号：US16842541

    申请日：2020-04-07

    Applicant: BOREALIS AG

    Inventor： Pauli LESKINEN ,  Johanna LILJA ,  Jingbo WANG ,  Markus GAHLEITNER

    IPC: C08L23/14 ,  C08F210/06 ,  C08F10/06 ,  F16L9/12

    Abstract: The present invention provides a process for producing a heterophasic copolymer composition. The polymerisation is conducted in the presence of an olefin polymerisation catalyst comprising a solid catalyst component further comprising titanium, magnesium, halogen and an internal donor, and a cocatalyst, the process comprising the steps of: (1) introducing streams of the solid catalyst component, the cocatalyst, propylene monomer and hydrogen into a first polymerisation reactor; (2) producing a first polymer of propylene in the first polymerisation reactor, the first polymer of propylene having a first melt flow rate MFR2 of from 0.1 to 2.0 g/10 min; (3) withdrawing a stream comprising the first polymer of propylene from the first polymerisation reactor and passing it to a second polymerisation reactor; (4) introducing a stream of propylene monomer into the second polymerisation reactor; (5) producing a first polymer mixture comprising the first polymer of propylene and a second polymer of propylene in the second polymerisation reactor, the first polymer mixture having a second melt flow rate MFR2 of from 0.05 to 1.0 g/10 min and which second melt flow rate is less than the first melt flow rate; (6) withdrawing a stream comprising the first polymer mixture from the second polymerisation reactor and passing it to a third polymerisation reactor; (7) introducing streams of propylene monomer and the co-monomer into the third polymerisation reactor; (8) producing the heterophasic copolymer composition comprising the first polymer mixture and a third copolymer

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