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公开(公告)号：US10950366B2
公开(公告)日：2021-03-16
申请号：US16777348
申请日：2020-01-30
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
Abstract: An alternating current (AC) power cable includes a conductor surrounded by at least an inner semiconductive layer including a first semiconductive composition, an insulation layer including a polymer composition, an outer semiconductive layer including a second semiconductive composition, and optionally a jacketing layer including a jacketing composition, in that order. The polymer composition of the insulation layer includes an unsaturated low density polyethylene (LDPE) copolymer of ethylene with one or more polyunsaturated comonomers and a crosslinking agent. The polymer composition of the insulation layer has a dielectric loss expressed as tan δ (50 Hz) of 12.0×10−4 or less, when measured at 25 kV/mm and 130° C. according to “Test for Tan δ measurements on 10 kV cables”.
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公开(公告)号：US10679769B2
公开(公告)日：2020-06-09
申请号：US16312400
申请日：2017-06-20
Applicant: BOREALIS AG
Inventor： Per-Ola Hagstrand , Thomas Gkourmpis , Antonios Gitsas , Villgot Englund , Ulf Nilsson , Mattias Andersson , Jonna Hynynen , Christian Müller
Abstract: A cable comprising a conductor surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein the insulation layer is not crosslinked or is cross-linked and comprises at least 90 wt % of a polymer composition, said polymer composition comprising: (I) 95.5 to 99.9 wt % of an LDPE; and (II) 0.1 to 4.5 wt % of an HDPE having a density of at least 940 kg/m3.
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公开(公告)号：US20190206588A1
公开(公告)日：2019-07-04
申请号：US16312400
申请日：2017-06-20
Applicant: BOREALIS AG
Inventor： Per-Ola Hagstrand , Thomas Gkourmpis , Antonios Gitsas , Villgot Englund , Ulf Nilsson , Mattias Andersson , Jonna Hynynen , Christian Müller
Abstract: A cable comprising a conductor surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein the insulation layer is not crosslinked or is cross-linked and comprises at least 90 wt % of a polymer composition, said polymer composition comprising: (I) 95.5 to 99.9 wt % of an LDPE; and (II) 0.1 to 4.5 wt % of an HDPE having a density of at least 940 kg/m3.
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公开(公告)号：US20190013115A1
公开(公告)日：2019-01-10
申请号：US16031934
申请日：2018-07-10
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
IPC: H01B9/02 , H01B13/22 , H01B13/06 , C08J3/24 , C08K5/01 , C08K3/04 , H01B3/44 , C08K5/14 , C08L23/02
Abstract: An alternating current (AC) power cable includes a conductor surrounded by at least an inner semiconductive layer including a first semiconductive composition, an insulation layer including a polymer composition, an outer semiconductive layer including a second semiconductive composition, and optionally a jacketing layer including a jacketing composition, in that order. The polymer composition of the insulation layer includes an unsaturated low density polyethylene (LDPE) copolymer of ethylene with one or more polyunsaturated comonomers and a crosslinking agent. The polymer composition of the insulation layer has a dielectric loss expressed as tan δ (50 Hz) of 12.0×10−4 or less, when measured at 25 kV/mm and 130° C. according to “Test for Tan δ measurements on 10 kV cables”.
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公开(公告)号：US20170178763A1
公开(公告)日：2017-06-22
申请号：US15451162
申请日：2017-03-06
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
CPC classification number: H01B3/441 , C08F10/02 , C08F110/02 , C08F210/02 , C08F2500/08 , C08K5/005 , H01B3/20 , H01B7/295 , C08F2/00 , C08F2500/12 , C08F236/20 , C08F220/12
Abstract: A crosslinkable and crosslinked polymer composition containing a low density polyethylene (LDPE) homopolymer or low density polyethylene (LDPE) copolymer has excellent direct current (DC) electrical properties. The crosslinked polymer composition has an electrical conductivity of 150 fS/m or less, when measured at 70° C. and a 30 kV/mm mean electric field from a non-degassed, 1 mm thick plaque sample of the crosslinked polymer composition when measured according to a direct current (DC) conductivity method. A cable can be surrounded by at least one layer of the polymer composition.
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Patent Agency Ranking
公开(公告)号：US20240158623A1
公开(公告)日：2024-05-16
申请号：US18283086
申请日：2022-03-23
Applicant: Borealis AG
Inventor： Thomas Gkourmpis , Katja Klimke , Per-Ola Hagstrand , Ulf Nilsson , Lars Efraimsson , Anette Johansson
CPC classification number: C08L23/14 , H01B3/307 , C08L2203/206 , C08L2207/02
Abstract: The present invention relates to a polypropylene composition comprising a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms with a total amount of comonomer units of from 10.0 to 16.0 wt %, based on the total amount of monomer units in the polypropylene composition, wherein the polypropylene composition has a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, based on the total weight amount of the polypropylene composition, with an amount of comonomer units of at least 22 wt %, based on the total amount of monomer units in the xylene cold soluble (XCS) fraction, a melt flow rate MFR2 of from 0.5 to 2.5 g/10 min, a flexural modulus of not more than 385 MPa, and wherein the polypropylene composition is free of an alpha-nucleating agent, an article comprising said polypropylene composition, preferably a cable comprising an insulation layer comprising said polypropylene composition and the use of said polypropylene composition as cable insulation for medium and high voltage cables.
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公开(公告)号：US11359080B2
公开(公告)日：2022-06-14
申请号：US17087390
申请日：2020-11-02
Applicant: BOREALIS AG
Inventor： Villgot Englund , Per-Ola Hagstrand , Annika Smedberg , Ulf Nilsson
IPC: C08L23/06 , C08K3/013 , H01B3/44 , C08L23/08 , C08K3/22 , C08K3/34 , C08F2/02 , C08K5/14 , C08L71/02 , C08F2/38
Abstract: The invention relates to polymer composition comprising a polyolefin (a) and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil, power cable, for example a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
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公开(公告)号：US10934420B2
公开(公告)日：2021-03-02
申请号：US15522725
申请日：2015-10-27
Applicant: BOREALIS AG
Inventor： Villgot Englund , Per-Ola Hagstrand , Annika Smedberg , Ulf Nilsson
Abstract: The invention relates to a polymer composition comprising polyolefin (a), which is other than low density polyethylene (LDPE), and polyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; a power cable, e.g. of a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
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公开(公告)号：US10822478B2
公开(公告)日：2020-11-03
申请号：US15522721
申请日：2015-10-27
Applicant: BOREALIS AG
Inventor： Villgot Englund , Per-Ola Hagstrand , Annika Smedberg , Ulf Nilsson
IPC: C08L23/06 , C08K3/013 , H01B3/44 , C08L23/08 , C08K3/22 , C08K3/34 , C08F2/02 , C08K5/14 , C08L71/02 , C08F2/38
Abstract: The invention relates to a polymer composition comprising polyolefin (a), which is other than low density polyethylene (LDPE), and polyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; a power cable, e.g. of a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
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公开(公告)号：US20200243222A1
公开(公告)日：2020-07-30
申请号：US16777348
申请日：2020-01-30
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
Abstract: An alternating current (AC) power cable includes a conductor surrounded by at least an inner semiconductive layer including a first semiconductive composition, an insulation layer including a polymer composition, an outer semiconductive layer including a second semiconductive composition, and optionally a jacketing layer including a jacketing composition, in that order. The polymer composition of the insulation layer includes an unsaturated low density polyethylene (LDPE) copolymer of ethylene with one or more polyunsaturated comonomers and a crosslinking agent. The polymer composition of the insulation layer has a dielectric loss expressed as tan δ (50 Hz) of 12.0×10−4 or less, when measured at 25 kV/mm and 130° C. according to “Test for Tan δ measurements on 10 kV cables”.
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