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    CABLE JACKET COMPOSITION
    11.
    发明申请
    CABLE JACKET COMPOSITION 有权

    公开(公告)号：US20210095108A1

    公开(公告)日：2021-04-01

    申请号：US16499352

    申请日：2018-04-06

    Applicant: Borealis AG

    Inventor： Anna Hjärtfors ,  Yi Liu ,  Joseph Thorman ,  Victor Sumerin

    IPC: C08L23/08 ,  C08F210/16 ,  G02B6/44 ,  H01B3/44

    Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cm3 and MFR2 of 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.

    Process for producing multimodal polyethylene blends including ultra-high molecular weight components
    12.
    发明授权
    Process for producing multimodal polyethylene blends including ultra-high molecular weight components 有权

    公开(公告)号：US10597470B2

    公开(公告)日：2020-03-24

    申请号：US15539125

    申请日：2015-12-21

    Applicant: BOREALIS AG

    Inventor： Bernd Kretzschmar ,  Carl-Gustaf Ek ,  Thomas Rätzsch ,  Yi Liu ,  Sandeep Tyagi

    IPC: C08L23/06 ,  C08L23/00 ,  C08F10/02 ,  C08L23/04 ,  C08F2/00

    Abstract: The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of blending a polyethylene fraction (A-1) having a weight average molecular weight Mw of equal to or more than 700 kg/mol to equal to or less than 10,000 kg/mol and a density of equal to or more than 920 kg/m3 to equal to or less than 960 kg/m3 and a polyethylene fraction (A-2) having a lower Mw as polyethylene fraction (A-1) and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 with a weight ratio of (A-1) to (A-2) of 45:55 to 80:20 to form a first polyethylene resin (A) having a Mw of equal to or more than 200 kg/mol to equal to or less than 1500 kg/mol, a melt flow rate MFR5 (190° C., 5 kg) of 0.001 to 10 g/10 min and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3, blending the first polyethylene resin (A) with a second polyethylene resin (B) having a Mw of equal to or more than 50 kg/mol to less than 700 kg/mol, and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 to form the 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 blending step.

    ADHESIVE COMPOSITION
    14.
    发明申请
    ADHESIVE COMPOSITION 审中-公开

    公开(公告)号：US20180010023A1

    公开(公告)日：2018-01-11

    申请号：US15543615

    申请日：2016-01-27

    Applicant: Borealis AG

    Inventor： Kurt Stubenrauch ,  Mark Jeruzal ,  Yi Liu

    IPC: C09J151/06 ,  B32B27/32 ,  C08L63/04 ,  B32B27/38

    Abstract: The present invention relates to an adhesive composition comprising a. a polyethylene resin (A) which has been grafted with an acid grafting agent and b. an epoxy resin (B) in an amount of 0.01 to 15 wt. % of the adhesive total composition, wherein the adhesive composition is having a MFR5 of 0.1 to 12 g/10 min. Furthermore, the invention relates to an article, in particular a multilayer pipe, comprising an adhesive layer which comprises said adhesive composition and the use of said adhesive composition for the production of an adhesive layer, in particular of an adhesive layer of a pipe.

    Polyethylene composition for high pressure resistant pipes with improved homogeneity
    15.
    发明授权
    Polyethylene composition for high pressure resistant pipes with improved homogeneity 有权

    公开(公告)号：US12258465B2

    公开(公告)日：2025-03-25

    申请号：US17287579

    申请日：2019-10-22

    Applicant: BOREALIS AG

    Inventor： Yi Liu ,  Victor Sumerin ,  Qizheng Dou

    IPC: C08L23/08 ,  C08F2/00 ,  C08F4/02 ,  C08F210/16 ,  C08L23/0807

    Abstract: The present invention relates to a polyethylene composition comprising a base resin having a density of from 952.0 kg/m3 to 960.0 kg/m3, determined according to ISO 1183, wherein the polyethylene composition has a melt flow rate MFR21 (190° C., 21.16 kg), of from 1.0 to 7.5 g/10 min, determined according to ISO 1133, a complex viscosity at a frequency of 0.05 rad/s eta0.05 of from 750 kPa #s to 1900 kPa #s, determined according to ISO 6721-1 and ISO 6721-10, and a white spot rating of not more than 12.0, determined according to ISO 18553, a polyethylene composition obtainable by a multi-stage process, a process for producing said polyethylene composition, an article, such as a pipe or pipe fitting, comprising said polyethylene composition and the use of said polyethylene composition for the production of an article.

    Upgraded recycled polyethylene polypropylene blend
    16.
    发明授权
    Upgraded recycled polyethylene polypropylene blend 有权

    公开(公告)号：US12163011B2

    公开(公告)日：2024-12-10

    申请号：US17284952

    申请日：2019-10-29

    Applicant: BOREALIS AG

    Inventor： Susanne Kahlen ,  Hermann Braun ,  Yi Liu ,  Markus Gahleitner

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

    Abstract: 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.

    Polyolefin composition with improved balance of properties
    20.
    发明授权
    Polyolefin composition with improved balance of properties 有权

    公开(公告)号：US11370905B2

    公开(公告)日：2022-06-28

    申请号：US17289585

    申请日：2019-10-24

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Yi Liu

    IPC: C08L23/16 ,  C08L23/14 ,  B29C45/00 ,  B29K23/00 ,  B29K105/00

    Abstract: The present invention is directed to a polyolefin composition comprising a blend of a heterophasic polypropylene composition and 5.0 to 30.0 wt % of an ethylene homo- or copolymer, the ethylene homo- or copolymer having a density of at least 941 kg/m3 and a melt flow rate MFR21 of 1 to 10 g/10 min. The heterophasic polypropylene composition comprises a propylene homopolymer or a propylene ethylene random copolymer and an elastomeric ethylene propylene rubber, and is characterized by 75.0 to 95.0 wt % of a crystalline fraction having an ethylene content of up to 4.0 wt % and an MFR2 of 0.1 to 100 g/10 min, and 5.0 to 25.0 wt % of a soluble fraction having an ethylene content of 10.0 to 70.0 wt % and an intrinsic viscosity of 1.0 to 4.0 dl/kg, wherein the crystalline fraction and the soluble fraction are determined in 1,2,4-trichlorobenzene at 40° C.

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