HIGH FLOW HETEROPHASIC POLYPROPYLENE AS APPEARANCE IMPROVER IN POLYOLEFIN COMPOSITIONS

    公开(公告)号:US20230265272A1

    公开(公告)日:2023-08-24

    申请号:US18015933

    申请日:2021-07-01

    CPC classification number: C08L23/142 C08L2205/025

    Abstract: Heterophasic copolymers of propylene having a MFR2 (230° C./2.16 Kg) of from 3.0 to 12.0 g/10 min made from or containing:
    (a) from 55 to 75 wt. % of a component (A) being a copolymer of propylene with ethylene or a C4-C10 alpha-olefin, made from or containing from 0.5 to 2.0 wt. % of ethylene and/or C4-C10 alpha-olefin units and having a MFR2 (230° C./2.16 K g) ranging from 60 to 140 g/10 min; and

    (b) from 25 to 45 wt. % of a component (B) being a propylene-ethylene copolymer made from or containing from 25 to 45 wt. % of ethylene units and having a value of the intrinsic viscosity of the fraction soluble in xylene at room temperature (XS-IV) ranging from 5 to 9 dl/g.

    POLYOLEFINS COMPOSITIONS OBTAINED FROM RECYCLED POLYOLEFINS

    公开(公告)号:US20230257562A1

    公开(公告)日:2023-08-17

    申请号:US18013443

    申请日:2021-06-17

    CPC classification number: C08L23/12 C08L2207/20 C08L2205/03 C08L2203/18

    Abstract: A polypropylene composition made from or containing:
    (a) 65 to 85 weight % of a crystalline propylene polymer having an amount of isotactic pentads (mmmm), measured by 13C-MNR on the fraction insoluble in xylene at 25° C. higher than 97.0 molar % and a polydispersity index ranging from 3 to 15;

    (b) 5 to 25 weight % of an elastomeric copolymer of ethylene and propylene, having an amount of recurring units deriving from ethylene ranging from 30 to 70 weight % and being partially soluble in xylene at ambient temperature; wherein the fraction soluble in xylene at ambient temperature having an intrinsic viscosity value from 2 to 8 dl/g; and

    (c) 5 to 25 weight % of recycled polyethylene (r-PE) having a melt flow rate (190° C./2.16 Kg) from 0.1 to 10 g/10 min,

    wherein the polypropylene composition having a melt flow rate (230° C./2.16 kg) ranging from 0.1 to 3.0 g/10 min.

    POLYOLEFINS COMPOSITIONS OBTAINED FROM RECYCLED POLYOLEFINS

    公开(公告)号:US20230250266A1

    公开(公告)日:2023-08-10

    申请号:US18013481

    申请日:2021-06-17

    CPC classification number: C08L23/12 C08L2205/03

    Abstract: A polypropylene composition made from or containing:

    (a) 65 to 85 weight % of a crystalline propylene polymer having an amount of isotactic pentads (mmmm), measured by 13C-MNR on the fraction insoluble in xylene at 25° C. higher than 97.0 molar% and a polydispersity index from 3 to 15;
    (b) 5 to 25 weight % of an elastomeric copolymer of ethylene and propylene, having an amount of recurring units deriving from ethylene ranging from 30 to 70 weight %, and being partially soluble in xylene at ambient temperature; wherein the fraction soluble in xylene at ambient temperature having an intrinsic viscosity value from 3 to 10 dl/g; and
    (c) 5 to 25 weight % of recycled polyethylene (r-PE) having a melt flow rate (190° C./2.16 Kg) from 0.1 to 10 g/10 min,

    wherein the polypropylene composition having a melt flow rate (ISO 1133 230° C./2.16 kg) higher than 3.0 to 15 g/10 min.

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