High pressure radial polymerisation process for a copolymer of ethylene silane groups containing comonomer

    公开(公告)号:US10889670B2

    公开(公告)日:2021-01-12

    申请号:US16210581

    申请日:2018-12-05

    Applicant: Borealis AG

    Abstract: A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerisation process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerising ethylene together with the silane groups containing comonomer in a polymerisation zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The copolymer of ethylene with silane groups containing comonomer can be used.

    FOAMABLE ETHYLENE POLYMER
    2.
    发明申请

    公开(公告)号:US20200325314A1

    公开(公告)日:2020-10-15

    申请号:US16305656

    申请日:2017-05-31

    Applicant: Borealis AG

    Abstract: The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt % of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970 kg/m3, and dissipation factor measured at 1.9 GHz of 50-80−10−6. The invention further relates to a process for making such a foamable ethylene polymer composition, and use of the foamable ethylene polymer composition in a foamed cable insulation.

    ETHYLENE POLYMERS FOR EXTRUSION COATING
    5.
    发明申请
    ETHYLENE POLYMERS FOR EXTRUSION COATING 审中-公开
    用于挤出涂料的乙烯聚合物

    公开(公告)号:US20150210785A1

    公开(公告)日:2015-07-30

    申请号:US14403985

    申请日:2012-12-07

    Applicant: BOREALIS AG

    Abstract: The present invention relates to low density polyethylene having a melt flow rate (MFR) according to ISO 1133 (190° C., 2.16 kg) which is higher than 4.0 g/10 min, a storage modulus G′, measured at a loss modulus G″ of 5 kPa, which is above 3000 Pa and a vinylidene content which is at least 24/100 k C, compositions, a process for production of the low density polyethylene, a low density polyethylene which is obtainable by the process, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process or an extrusion lamination process, an article, e.g. an extrusion article, an extrusion lamination article, film blowing article, film casting article, wire and cable extrusion article, injection moulding article, blow moulding article or pipe extrusion article, and uses of the low density polyethylene.

    Abstract translation: 本发明涉及根据ISO 1133(190℃,2.16kg)的熔体流动速率(MFR)高于4.0g / 10min的低密度聚乙烯,以损耗模量测量的储能模量G' G“为5Pa以上,其高于3000Pa,亚乙烯基含量为至少24/100k℃,组合物,生产低密度聚乙烯的方法,可通过该方法获得的低密度聚乙烯,连续 用于在低密度聚乙烯中引入亚乙烯基的乙烯聚合方法,挤出涂布方法或挤出层压方法,例如 挤出制品,挤出层压制品,吹膜制品,薄膜浇铸制品,电线和电缆挤出制品,注射成型制品,吹塑制品或管材挤出制品以及低密度聚乙烯的用途。

    Polyethylene with a high vinyl content and with a low MFR

    公开(公告)号:US11286315B2

    公开(公告)日:2022-03-29

    申请号:US16770719

    申请日:2018-12-18

    Applicant: BOREALIS AG

    Abstract: The invention relates to a polyethylene having a melt flow rate at (2.16) kg loading (MFR2), determined according to method ISO1133-1:2011, which MFR2 is A g/10 min and A1≤A≤A2; wherein A1 is (0.5) and A2 is (1.70), and containing a total amount of vinyl groups which is B vinyl groups per (1000) carbon atoms, and B1≤B, wherein B1 is (0.45), determined according to method ASTM D6248-98, a polymer composition, an article being e.g. a cable, e.g. a power cable, and processes for producing a polyethylene, a polymer composition and an article, and an article; useful in different end applications, such as wire and cable (W&C) applications.

    POLYETHYLENE COMPOSITION FOR HIGH PRESSURE RESISTANT PIPES

    公开(公告)号:US20220010046A1

    公开(公告)日:2022-01-13

    申请号:US17288804

    申请日:2019-10-23

    Applicant: BOREALIS AG

    Abstract: The present invention relates to a polyethylene composition comprising a base resin having a density of from 950.0 kg/m3 to 962.0 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 9.0 g/10 min, determined according to ISO 1133 and a viscosity at a constant shear stress of 747 Pa eta747 of from 3500 kPa #s to 20000 kPa #s, 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, such as a pipe or pipe fitting.

    POLYMER COMPOSITION AND A PROCESS FOR PRODUCTION OF THE POLYMER COMPOSITION

    公开(公告)号:US20190256695A1

    公开(公告)日:2019-08-22

    申请号:US16307593

    申请日:2017-06-20

    Applicant: BOREALIS AG

    Abstract: A polymer composition comprising a base resin is disclosed herein. The base resin includes a first high molecular weight component, a low molecular weight component and a second high molecular weight component. The weight average molecular weight of the second high molecular weight component differs from the first high molecular weight component. The ratio of the weight and number average molecular weight of the first high molecular weight component is greater than 5. The first high molecular weight component has a density of equal or less than 930 kg/m3, and an intrinsic viscosity of equal or less than 15 dl/g, The base resin has a melt flow rate MFR5 of equal or less than 0.40 g/10 min and the composition has a viscosity at a shear stress of 747 Pa (eta747) of more than 700 kPas. Also a process for the production of a polymer composition is disclosed herein.

    HIGH PRESSURE RADIAL POLYMERISATION PROCESS FOR A COPOLYMER OF ETHYLENE SILANE GROUPS CONTAINING COMONOMER

    公开(公告)号:US20190106518A1

    公开(公告)日:2019-04-11

    申请号:US16210581

    申请日:2018-12-05

    Applicant: Borealis AG

    Abstract: A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerisation process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerising ethylene together with the silane groups containing comonomer in a polymerisation zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The copolymer of ethylene with silane groups containing comonomer can be used.

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