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    AERATED POLYPROPYELENE COMPOSITIONS EXHIBITING SPECIFIC EMISSION
    72.
    发明申请
    AERATED POLYPROPYELENE COMPOSITIONS EXHIBITING SPECIFIC EMISSION 有权

    公开(公告)号：US20210403677A1

    公开(公告)日：2021-12-30

    申请号：US17289655

    申请日：2019-10-22

    Applicant: BOREALIS AG

    Inventor： Andreas Fuchs ,  Luca Boragno ,  Girish Suresh Galgali ,  Markus Gahleitner ,  Jürgen Huber ,  Stefanie Engleder

    IPC: C08K5/20 ,  C08K3/40 ,  C08K3/34 ,  C08L23/12

    Abstract: A polypropylene composition comprising oligomers having a semi-volatile organic condensable (FOG,VDA 278 October 2011), content of 50 μg/g to about 400 μg/g of the total polypropylene composition, and volatile organic compounds (VOC,VDA 278 October 2011) in an amount of less than 80 μg/g of the total polypropylene composition, wherein the weight ratio of said oligomers versus said volatiles is more than about 5.0, wherein the polypropylene composition has an MFR2 (ISO 1133, 230° C., 2.16 kg) of 10 g/10 min or higher, wherein the polypropylene composition a flexural modulus (ISO 178 on injection moulded specimens of 80×10×4 mm prepared in accordance with ISO 294-1:1996) of from 1000 to 2000 MPa, and wherein the total quantity of slip agent is at least 500 ppm.

    MULTILAYER POLYPROYLENE FILM
    74.
    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.

    POLYPROPYLENE BASED COMPOSITION WITH IMPROVED PAINTABILITY
    77.
    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.

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