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    UPGRADED RECYCLED POLYETHYLENE POLYPROPYLENE BLEND
    2.
    发明申请
    UPGRADED RECYCLED POLYETHYLENE POLYPROPYLENE BLEND 有权

    公开(公告)号：US20220127439A1

    公开(公告)日：2022-04-28

    申请号：US17284952

    申请日：2019-10-29

    申请人： BOREALIS AG

    发明人： Susanne Kahlen ,  Hermann Braun ,  Yi Liu ,  Markus Gahleitner

    IPC分类号： C08L23/04 ,  C08L23/10 ,  C08K5/01 ,  C08K3/34

    摘要： A polyethylene-polypropylene composition obtainable by blending a) 80 to 97 wt.-% of a blend (A) comprising A-1) polypropylene and A-2) polyethylene, wherein the weight ratio of polypropylene to polyethylene is from 3:7 to 7:3, and wherein blend (A) is a recycled material, which is recovered from a waste plastic material derived from post-consumer and/or industrial waste; and b) 3 to 20 wt.-% of a compatibilizer (B) being a C2C8 plastomer, having—a DSC melting point of below 75° C. (ISO11357);—an MFR2 (ISO1133, 2.16 kg load at 190° C.) of equal or below 1.5 g/10 min; and—a density of equal or lower than 885 kg/m3 (ISO1183),wherein the ratio of MFR2 (blend (A) (ISO1133, 2.16 kg load at 230° C.)/MFR2(compatibilizer (B) (ISO1133, 2.16 kg load at 190 ° C.), is in the range 3.0 to 15; and c) 0 to 1.0 wt.-% of a stabilizer or mixture of stabilizers.

    Polymer composition and a process for production of the polymer composition
    3.
    发明授权
    Polymer composition and a process for production of the polymer composition 有权

    公开(公告)号：US10961334B2

    公开(公告)日：2021-03-30

    申请号：US16306296

    申请日：2017-05-29

    申请人： BOREALIS AG

    发明人： Yi Liu ,  Victor Sumerin ,  Ravindra Tupe

    IPC分类号： C08F210/16 ,  C08F4/649 ,  C08F4/655 ,  C08F4/659 ,  C08L23/08 ,  C08L23/04

    摘要： A polyethylene composition comprising a base resin is disclosed herein. The base resin includes an ethylene homo- or copolymer fraction (A1), and an ethylene homo- or copolymer fraction (A2). Fraction (A1) has a lower weight average molecular weight than fraction (A2). The base resin has a melt flow rate MFR21 of equal to or less than 8.0 g/10 min and a density of 930 to 950 kg/m3. The polyethylene composition has a melt flow rate MFR5 of 0.01 to 0.3 g/10 min, a flow rate ratio FRR21/5 of equal to or more than 20 and a ratio of the weight average molecular weight and the number average molecular weight (Mw/Mn) of equal to or less than 30. Also the polyethylene composition has a tensile modulus of less than 1000 MPa. Also a process for the production of a polyethylene composition comprising polyethylene base resin is disclosed herein.

    POLYMER COMPOSITION AND A PROCESS FOR PRODUCTION OF THE POLYMER COMPOSITION
    4.
    发明申请
    POLYMER COMPOSITION AND A PROCESS FOR PRODUCTION OF THE POLYMER COMPOSITION 审中-公开

    公开(公告)号：US20200291210A1

    公开(公告)日：2020-09-17

    申请号：US16497511

    申请日：2018-06-13

    申请人： Borealis AG

    发明人： Yi Liu ,  Qizheng Dou

    IPC分类号： C08L23/06

    摘要： A polymer composition comprising a base resin is disclosed herein. The base resin includes a very high molecular weight polyethylene component, a low molecular weight polyethylene component having a weight average molecular weight lower than a weight average molecular weight of the very high molecular weight component and a high molecular weight component having a weight average molecular weight higher than the weight average molecular weight of the low molecular weight component, but lower than the weight average molecular weight of the very high molecular weight component. The composition has a complex viscosity at 0.05 rad/s Eta0,05rad/s of equal to or more than 800 kPa·s, a viscosity at a shear stress of 747 Pa (eta747) of equal to or less than 34000 kPas and a melt flow rate MFR5 of equal to or less than 0.17 g/10 min.

    Process for producing multimodal polyethylene in-situ blends including ultra-high molecular weight fractions
    5.
    发明授权
    Process for producing multimodal polyethylene in-situ blends including ultra-high molecular weight fractions 审中-公开

    公开(公告)号：US10669410B2

    公开(公告)日：2020-06-02

    申请号：US15539130

    申请日：2015-12-21

    申请人： BOREALIS AG

    发明人： Yi Liu ,  Qizheng Dou ,  Alexandra Romina Albunia

    IPC分类号： C08L23/08 ,  C08L23/06 ,  C08F10/02 ,  B29B9/12 ,  C08F2/00 ,  B29B9/06

    摘要： The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of polymerizing a polyethylene fraction (A-1) having a weight average molecular weight Mw of equal to or more than 500 kg/mol to equal to or less than 10,000 kg/mol and a density of equal to or more than 915 kg/m3 to equal to or less than 960 kg/m3 in one reaction step and polymerizing a polyethylene fraction (A-2) having a lower weight average molecular weight Mw as polyethylene fraction (A-1) and a density of equal to or more than 910 kg/m3 to equal to or less than 975 kg/m3 in a second reaction step of a sequential multistage process wherein one of said polyethylene fractions is polymerized in the presence of the other of said polyethylene fractions to form a first polyethylene resin (A) having a weight average molecular weight Mw of equal to or more than 150 kg/mol to equal to or less than 1,500 kg/mol, and a density of equal to or more than 910 kg/m3 to equal to or less than 975 kg/m3, wherein the weight average molecular weight Mw of the first polyethylene resin (A) is lower than the weight average molecular weight Mw of the polyethylene fraction (A-1), blending the first polyethylene resin (A) with a second polyethylene resin (B) having a weight average molecular weight Mw of equal to or more than 50 kg/mol to less than 500 kg/mol, and a density of equal to or more than 910 kg/m3 to equal to or less than 970 kg/m3 to form said multimodal polyethylene composition, wherein the multimodal polyethylene composition a melt flow rate MFR5 (190° C., 5 kg) of 0.01 to 10 g/10 min and a density of equal to or more than 910 kg/m3 to equal to or less than 970 kg/m3 a polyethylene composition obtainable by said process and the polyethylene resin of said first polymerization step.