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    POLYETHYLENE BLEND FOR A FILM LAYER
    3.
    发明申请
    POLYETHYLENE BLEND FOR A FILM LAYER 有权

    公开(公告)号：US20250129241A1

    公开(公告)日：2025-04-24

    申请号：US18832327

    申请日：2023-01-24

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER

    IPC: C08L23/0807 ,  C08J5/18

    Abstract: Disclosed is a polyethylene blend of a specific multimodal metallocene catalysed linear low density polyethylene (mLLDPE) and a specific high density polyethylene, produced in a presence of a Ziegler-Natta catalyst (ZN-HDPE), which provides films with well-balanced properties, especially stiffness/impact balance.

    POLYETHYLENE BLEND FOR A FILM LAYER
    6.
    发明申请
    POLYETHYLENE BLEND FOR A FILM LAYER 有权

    公开(公告)号：US20250115748A1

    公开(公告)日：2025-04-10

    申请号：US18832312

    申请日：2023-01-24

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER

    IPC: C08L23/0807 ,  C08F4/6592 ,  C08J5/18

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

    BIAXIALLY ORIENTED FILM
    7.
    发明申请
    BIAXIALLY ORIENTED FILM 有权

    公开(公告)号：US20240400806A1

    公开(公告)日：2024-12-05

    申请号：US18699065

    申请日：2022-10-07

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER ,  Arnaud ALABRUNE ,  Elisabeth POTTER

    IPC: C08L23/08 ,  B32B27/08 ,  B32B27/32 ,  C08J5/18

    Abstract: The invention provides a biaxially oriented film comprising a polymer composition having a density 954 to 970 kg/m3 and an MFR2 of 0.5 to 2.0 g/10 min, wherein said composition comprises: (i) 90 to 99 wt % of a multimodal high density polyethylene (HDPE) having a density of 945-970 kg/m3, an MFR2 of 0.1-3.0 g/10 min and a molecular weight distribution (MWD) of 5-25, the multimodal HDPE comprising at least two fractions: (A) 30 to 70 wt % of a lower molecular weight fraction being a polyethylene with a density of 955-980 kg/m3 and an MFR2 of 100-1000 g/10 min; and (B) 30 to 70 wt % of a higher molecular weight fraction being a polyethylene with a density of 940-960 kg/m3 and an MFR2 of 0.0001-1.0 g/10 min measured according to ISO 1133; and (ii) 1 to 10 wt % of a hydrocarbon resin.

    LONG-CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION
    8.
    发明公开
    LONG-CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION 审中-公开

    公开(公告)号：US20240043584A1

    公开(公告)日：2024-02-08

    申请号：US18485443

    申请日：2023-10-12

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Katja Ellen KLIMKE ,  Friedrich BERGER

    IPC: C08F110/06

    CPC classification number: C08F110/06 ,  C08F2810/10

    Abstract: Disclosed is a process for producing a propylene polymer composition comprising a long chain branched propylene polymer, wherein the propylene polymer composition has
    a) a melt flow rate MFR2 (230° C., 2.16 kg) of 0.8 to 6.0 g/10 min
    b) a xylene hot insolubles (XHU) fraction in an amount of not more than 0.80 wt %, based on the total weight amount of the propylene polymer composition,
    c) a melting temperature Tm of at least 160.0° C.,
    d) a F30 melt strength of from 5.0 to less than 30.0 cN, and
    e) a heat distortion temperature (HDT) of at least 108° C.,
    the process comprising reactive modification of a propylene polymer in the presence of a peroxide. Also disclosed is an article comprising said propylene polymer composition.

    RANDOM PROPYLENE POLYMER COMPOSITION AND USE IN EXTRUSION BLOW MOULDING
    9.
    发明申请
    RANDOM PROPYLENE POLYMER COMPOSITION AND USE IN EXTRUSION BLOW MOULDING 有权

    公开(公告)号：US20220073718A1

    公开(公告)日：2022-03-10

    申请号：US17423407

    申请日：2020-01-15

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Friedrich BERGER ,  Karlheinz FRIEDRICH

    IPC: C08L23/14 ,  C08F2/00 ,  C08F210/02 ,  C08F210/14 ,  C08F4/646 ,  C08F4/649 ,  C08F4/654 ,  B29C49/04

    Abstract: The present invention is directed to a propylene polymer composition comprising at least one propylene copolymer (C-PP), and an α-nucleating agent (NU), wherein the propylene copolymer (C-PP) comprises two propylene copolymer fractions (PP1) and (PP2), wherein propylene copolymer fraction (PP1) is contained in the propylene copolymer (C-PP) in an amount of 30 to 70 wt. % and the propylene copolymer fraction (PP2) is contained in the propylene copolymer (C-PP) in an amount of 70 to 30 wt. %, the comonomer content of propylene copolymer fraction (PP1) is in the range of 0.5 to 2.5 wt.-% and the comonomer content of the propylene copolymer fraction (PP1) is lower compared to the comonomer content of the propylene copolymer fraction (PP2), and the propylene polymer composition has (a) a melt flow rate MFR2 (230° C.) measured according to according to ISO 1133 of 1 to 5 g/10 min., and (b) a comonomer content of 4.0 to 8.0 wt. %, the comonomer(s) being ethylene and/or at least one C4 to C12 α-olefin. The above propylene polymer composition has improved impact and optical properties. The invention further provides a method of producing the above propylene polymer composition and an extrusion blow molded article comprising the above propylene polymer composition.

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