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    PROCESS FOR PREPARING A CAP OR CLOSURE
    1.
    发明申请
    PROCESS FOR PREPARING A CAP OR CLOSURE 有权

    公开(公告)号：US20220227030A1

    公开(公告)日：2022-07-21

    申请号：US17607059

    申请日：2020-04-28

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Elisabeth POTTER ,  Luc MONNISSEN ,  Meta CIGON ,  Daniela MILEVA

    IPC: B29C45/00 ,  C08F110/06 ,  B29C45/72

    Abstract: A process for producing a cap or closure comprising obtaining a polypropylene composition by sequential polymerization comprising the steps: A) polymerizing in a first reactor, preferably a slurry reactor, in the presence of a Ziegler-Natta catalyst monomers comprising propylene and optionally one or more comonomers selected from ethylene and C4-C10 alpha-olefins, to obtain a first propylene polymer fraction having a comonomer content in the range of 0.0 to 1.8 wt %, and a MFR2 in the range of from 12.0 to 40.0 g/10 min, as measured according to ISO 1133 at 230° C. under a load of 2.16 kg; B) polymerizing in a second reactor, preferably a first gas-phase reactor, monomers comprising propylene and one or more comonomers selected from ethylene and C4-C10 alpha-olefins, in the presence of the first propylene polymer fraction, to obtain a second propylene polymer fraction, wherein the polypropylene composition comprising said first and second propylene polymer fractions has an MFR2 in the range of from 12.0 to 60.0 g/10 min, as measured according to ISO 1133 at 230° C. under a load of 2.16 kg, has a comonomer content in the range of from 2.2 to 5.0 wt % and wherein the ratio of the comonomer content of component A) to the comonomer content of the polypropylene composition is 0.35 or less, C) melting, extruding and moulding the polypropylene composition in the presence of at least one nucleating agent to prepare a cap or closure; and D) exposing the cap or closure obtained in step (C) to a cooling rate of 50 K/s or more.

    BIAXIALLY ORIENTED FILM
    3.
    发明申请
    BIAXIALLY ORIENTED FILM 有权

    公开(公告)号：US20240384047A1

    公开(公告)日：2024-11-21

    申请号：US18693849

    申请日：2022-09-21

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER ,  Juulia HIRVONEN ,  Arnaud ALABRUNE ,  Elisabeth POTTER ,  Tuan Anh TRAN

    IPC: C08J5/18

    Abstract: The invention provides a biaxially oriented film comprising a multimodal high density polyethylene (HDPE), wherein the multimodal HDPE has a density determined according to ISO 1183 in the range of 952 to 968 kg/m3 and an MFR2 of 0.3 to 3.0 g/10) min when measured at 190° C. with a load of 2.16 kg according to ISO 1133, and wherein the multimodal HDPE comprises at least two fractions: (C) 30 to 70 wt % relative to the total weight of the multimodal HDPE, of a lower molecular weight fraction being a polyethylene with a density in the range of 955 to 980 kg/m3 and an MFR2 of 100 to 2000 g/10 min when measured at 190° C. with a load of 2.16 kg according to ISO 1133; and (D) 30 to 70 wt % relative to the total weight of the multimodal HDPE, of a higher molecular weight fraction being a polyethylene with a density in the range of 925 to 970 kg/m3 and an MFR2 of 0.0001 to 1.0 g/10 min when measured at 190° C. with a load of 2.16 kg according to ISO 1133.

    HETEROPHASIC POLYPROPYLENE COMPOSITION
    4.
    发明申请
    HETEROPHASIC POLYPROPYLENE COMPOSITION 有权

    公开(公告)号：US20220306851A1

    公开(公告)日：2022-09-29

    申请号：US17610765

    申请日：2020-05-14

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Elisabeth POTTER ,  Luc MONNISSEN ,  Meta CIGON

    IPC: C08L23/16 ,  C08L23/08

    Abstract: A heterophasic polypropylene composition comprises a matrix based on a propylene-random copolymer and a linear low density polyethylene dispersed in the matrix. The heterophasic polypropylene composition has both improved impact strength and reduced amount of fraction soluble in cold xylene (XCS), while maintaining optical properties. Further, the heterophasic polypropylene composition has an optimised ratio of impact strength to the amount of fraction soluble in cold xylene (XCS).p.

    BIAXIALLY ORIENTED FILM
    6.
    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.

    POLYPROPYLENE COMPOSITION
    7.
    发明公开
    POLYPROPYLENE COMPOSITION 审中-公开

    公开(公告)号：US20240279451A1

    公开(公告)日：2024-08-22

    申请号：US18568696

    申请日：2022-06-09

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Elisabeth POTTER ,  Meta CIGON

    IPC: C08L23/16 ,  C08F2/00 ,  C08F210/06 ,  C08K5/3432

    CPC classification number: C08L23/16 ,  C08F2/001 ,  C08F210/06 ,  C08K5/3432 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2314/02

    Abstract: The invention relates to a polypropylene composition comprising: a) a bimodal random Ziegler-Natta propylene copolymer having a comonomer content of 2.0 to 4.5 wt.-%, said copolymer comprising: (i) 30 to 70 wt.-% of a first propylene copolymer having a comonomer content in the range of 0.1 to 4.5 wt.-% relative to the total weight of the first propylene copolymer, and an MFR2 of 1 to 100 g/10 min; and (ii) 70 to 30 wt.-% of a second propylene copolymer having a comonomer content in the range of 1.0 to 15 wt.-% relative to the total weight of the second propylene copolymer and an MFR2 of 1 to 100 g/10 min; with the proviso that the comonomer content of the second propylene copolymer (ii) is higher than for the first propylene copolymer (i); and b) at least one hindered amine light stabiliser.

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