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    PROCESS FOR PRODUCING POLYPROPYLENE COMPOSITION, AND POLYPROPYLENE COMPOSITIONS SO PRODUCED
    1.
    发明公开
    PROCESS FOR PRODUCING POLYPROPYLENE COMPOSITION, AND POLYPROPYLENE COMPOSITIONS SO PRODUCED 审中-公开

    公开(公告)号：US20230302705A1

    公开(公告)日：2023-09-28

    申请号：US18033926

    申请日：2021-10-19

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ronald Julianus Peter SCHIPPER ,  Christelle Marie Helene GREIN ,  Cristina RODRIGUEZ IGLESIAS

    IPC: B29C48/00 ,  C08L23/12 ,  B29C48/505 ,  B29C48/385 ,  B29C48/04 ,  B29C48/345

    CPC classification number: B29C48/022 ,  B29C48/04 ,  B29C48/345 ,  B29C48/385 ,  B29C48/507 ,  C08L23/12 ,  B29K2023/12

    Abstract: A process for producing a polypropylene composition using a compounding extruder includes a) a melting section having a first elongated cylindrical tube with a first inlet port to receive a propylene-based polymer and additives containing an elastomer of ethylene and α-olefin comonomer having 4 to 8 carbon atoms and a first outlet port to discharge a first melt composition containing a melt of the propylene-based polymer and the additives and a first screw arranged in the first elongated cylindrical tube, convey the propylene-based polymer and the additives to the first outlet port, and a mixing section including a second elongated cylindrical tube having a second inlet port to receive the first melt composition, and a second outlet port to discharge a second melt composition containing the first melt composition and the optional further component and a second screw arranged in the second elongated cylindrical tube to convey the first melt composition to the second outlet, wherein the first screw and the second screw areoperable at different screw speeds. The process includes: A) feeding the propylene-based polymer and the additives to the first inlet and discharging the first melt composition from the first outlet, wherein the first screw is operated at a first screw speed and B) feeding the first melt composition from the first outlet to the second inlet, and discharging the second melt composition from the second outlet, wherein the second screw is operated at a second screw speed smaller than the first screw speed.

    COMPOSITION FOR LUGGAGE CASE
    2.
    发明公开
    COMPOSITION FOR LUGGAGE CASE 审中-公开

    公开(公告)号：US20240336771A1

    公开(公告)日：2024-10-10

    申请号：US18719952

    申请日：2022-12-13

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ting HUANG ,  Chaodong JIANG ,  Christelle Marie Helene GREIN ,  Xin KONG ,  Kunjiao LI ,  Zhuo WANG

    IPC: C08L23/12 ,  A45C5/02 ,  C08L23/06 ,  C08L23/08 ,  C08L23/16

    CPC classification number: C08L23/12 ,  A45C5/02 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/16 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/22 ,  C08L2207/02 ,  C08L2207/062

    Abstract: The invention relates to a composition comprising (A) a heterophasic propylene copolymer, (B) a propylene homopolymer and (C) a polyolefin-based elastomer, wherein (A) the heterophasic propylene copolymer consists of (al) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene copolymer consisting of at least 90 wt % of propylene monomer units and at most 10 wt % of ethylene and/or α-olefin monomer units, based on the total weight of the propylene-based matrix and (a2) a dispersed ethylene-α-olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, (C) the polyolefin-based elastomer has a melt flow index of 15 to 50 dg/min measured according to ASTM D1238 with a 2.16 kg load at 190° C., the total amount of (a2) and (C) with respect to the total composition is 20.0 to 26.0 wt % and the composition has a melt flow index as measured according to ISOl133-1:2011 with a 2.16 kg load at 230° C. of 25 to 60 dg/min.

    COMPOUNDING EXTRUDER FOR PRODUCING POLYPROPYLENE COMPOSITION
    5.
    发明公开
    COMPOUNDING EXTRUDER FOR PRODUCING POLYPROPYLENE COMPOSITION 审中-公开

    公开(公告)号：US20230382037A1

    公开(公告)日：2023-11-30

    申请号：US18031952

    申请日：2021-10-19

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ronald Julianus Peter SCHIPPER ,  Christelle Marie Helene GREIN ,  Cristina RODRIGUEZ IGLESIAS

    IPC: B29C48/385 ,  B29C48/505

    CPC classification number: B29C48/385 ,  B29C48/507 ,  B29C2948/9239 ,  B29K2023/12

    Abstract: A compounding extruder includes a melting section having a first cylindrical tube having a first inlet to receive a propylene polymer and a first outlet to discharge a first melt composition and a first screw arranged in the first cylindrical tube and having a first length, a first outer screw diameter Do1 and a first inner screw diameter to convey the propylene polymer and to the first outlet and a mixing section comprising a second cylindrical tube having a second inlet to receive, the first melt composition from the first outlet, an end having a second outlet and a side inlet between the second inlet and the second outlet to receive a further component, and a second screw arranged in the second cylindrical to convey the first melt composition and the further component to the second outlet, wherein Do1 is 0.82 to 1.2×Do2.

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