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.

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