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    HETEROPHASIC PROPYLENE ETHYLENE COPOLYMER COMPOSITION WITH DESIRABLE BALANCE OF MECHANICAL PROPERTIES
    13.
    发明申请
    HETEROPHASIC PROPYLENE ETHYLENE COPOLYMER COMPOSITION WITH DESIRABLE BALANCE OF MECHANICAL PROPERTIES 有权

    公开(公告)号：US20220396695A1

    公开(公告)日：2022-12-15

    申请号：US17773722

    申请日：2020-11-02

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Luigi Resconi ,  Markus Gahleitner ,  Klaus Bernreitner ,  Wilfried Töltsch

    IPC: C08L23/16 ,  C08L23/12 ,  C08F10/06

    Abstract: A heterophasic propylene ethylene copolymer composition having an MFR2 in the range from 1.0 to 55.0 g/10 min and a melting temperature in the range from 155 to 162° C., comprising: i) from 60 to 88 wt.-% of a xylene cold insoluble fraction (XCI) having an intrinsic viscosity iV(XCI) in the range from 1.40 to 2.50 dl/g, an isotactic pentad concentration [mmmm] of more than 97.0% and a content of 2,1-regiodefects in the range from 0.1 to 0.4 mol %, ii) from 12 to 40 wt.-% of a xylene cold soluble fraction (XCS) having an intrinsic viscosity iV(XCS) in the range from 1.80 to 3.20 dl/g and an ethylene content C2(XCS) in the range from 25 to 80 wt.-%, wherein the ratio of the intrinsic viscosities of the two fractions, iV(XCS)/iV(XCI), is in the range from 1.0 to 2.0.

    LONG-CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION
    14.
    发明申请
    LONG-CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION 有权

    公开(公告)号：US20220275118A1

    公开(公告)日：2022-09-01

    申请号：US17623670

    申请日：2020-06-19

    Applicant: Borealis AG

    Inventor： Jingbo Wang ,  Markus Gahleitner ,  Pauli Leskinen ,  Klaus Bernreitner ,  Katja Ellen Klimke

    IPC: C08F110/06

    Abstract: The present invention relates to a propylene polymer composition comprising a long chain branched propylene polymer, wherein said propylene polymer composition has a) a xylene hot insolubles (XHU) fraction in an amount of less than 1.0%, based on the total weight amount of the propylene polymer composition, b) a melting temperature Tm of less than 160° C., c) a crystallization temperature Tc of at least 115° C., and d) a F30 melt strength of from 5.0 to less than 30.0 cN, a process for producing said propylene polymer composition by reactive modification of a propylene polymer in the presence of a peroxide, an article comprising said propylene polymer composition and the use of said propylene polymer composition for producing an article.

    MULTILAYER POLYPROYLENE FILM
    19.
    发明申请
    MULTILAYER POLYPROYLENE FILM 有权

    公开(公告)号：US20210362479A1

    公开(公告)日：2021-11-25

    申请号：US17253872

    申请日：2019-07-22

    Applicant: BOREALIS AG

    Inventor： Markus Gahleitner ,  Jingbo Wang ,  Friedrich Berger ,  Manfred Gruenberger

    IPC: B32B27/08 ,  B32B27/32 ,  B32B27/30 ,  C08F210/06

    Abstract: Multilayer film comprising at least a skin layer, a core layer and an inner layer, the skin layer comprising a homo polypropylene or a random propylene ethylene copolymer including up to 2.5 wt.-% units derived from ethylene, the homopolypropylene or the random propylene ethylene copolymer having a MFR2 (ISO1 133, 230° C.) of 2.0 to 20 g/10 min and a melting temperature (Tm) of above 148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min; the core layer comprising a mixture obtainable by melt blending 20 to 100 wt.-% of a random heterophasic copolymer and 0 to 80 wt.-% of styrene based TPE, whereby the random heterophasic copolymer has a melting temperature (Tm) of 134° C.-148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min and includes a propylene ethylene copolymer rubber; and whereby the styrene based TPE has a styrene content of from 5 to 20 wt.-%, and the inner layer comprising a random propylene ethylene copolymer having a melting temperature (Tm) from 132° C. to 144° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min, wherein the multilayer film is free of phthalic acid esters as well as decomposition products thereof.

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