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    POLYPROPYLENE BASED COMPOSITION WITH IMPROVED PAINTABILITY
    22.
    发明申请
    POLYPROPYLENE BASED COMPOSITION WITH IMPROVED PAINTABILITY 有权

    公开(公告)号：US20210179831A1

    公开(公告)日：2021-06-17

    申请号：US17269208

    申请日：2019-08-23

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Klaus Bernreitner ,  Daniela Mileva ,  Georg Grestenberger ,  Markus Gahleitner

    IPC: C08L23/14 ,  C08L23/08 ,  C08L23/16 ,  C08K3/34

    Abstract: The present invention relates to a polypropylene based composition comprising: (A) from 40.0 to 85.0 wt % of a heterophasic propylene copolymer having a content of xylene cold soluble (XCS) fraction in the range of 15 wt % to 35 wt %, based on the total weight of the heterophasic propylene copolymer; (B) from 5.0 to 15.0 wt % of a random copolymer of propylene with comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms which has been polymerized in the presence of a single-site catalyst system and has a melting temperature Tm as measured in differential scanning calorimetry (DSC) of less than 140° C.; (C) from 5.0 to 25.0 wt % of an ethylene copolymer with alpha-olefin comonomer units having from 4 to 12 carbon atoms with a density of from 850 kg/m3 to 900 kg/m3; and (D) from 5.0 to 25.0 wt % of an inorganic filler, wherein the amounts of components (A), (B), (C), and (D) are all based on the total weight amount of the polypropylene based composition, said polypropylene based composition having a melt flow rate (MFR2) as measured at 230° C. and 2.16 kg load in accordance with ISO 1133 in the range of 2.0 g/10 min to 20.0 g/10 min, an article comprising said polypropylene based composition and the use of said copolymer (B) for reducing the paint adhesion failure of an article comprising said polypropylene based composition.

    Low EFO polypropylene composition
    27.
    发明授权
    Low EFO polypropylene composition 有权

    公开(公告)号：US10358546B2

    公开(公告)日：2019-07-23

    申请号：US15743051

    申请日：2016-07-27

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Claudia Kniesel ,  Petar Doshev ,  Floran Prades

    IPC: C08L23/12 ,  C08L23/06 ,  C08L23/08 ,  C08L23/14

    Abstract: Polymer composition comprising at least one polypropylene homopolymer and/or random copolymer, up to 15 wt % of at least one polyethylene, optionally at least one elastomer in an amount of 8 to 40 wt % and optionally fillers and/or additives in an amount of up to 45 wt % based on the total weight of the final polymer composition with the at least one polyethylene having a density of higher than 940 kg/m3, a content of hexane hot extractables of below 0.80 wt % preferably below 0.60 wt %, most preferably below 0.40 wt % and a copolymer/homopolymer (COHO) ratio measured by Temperature Rising Elution Fraction (TREF) up to 6%.

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