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公开(公告)号：US20240199865A1
公开(公告)日：2024-06-20
申请号：US18549717
申请日：2022-03-23
Applicant: BOREALIS AG
Inventor： Thomas Gkourmpis , Katja Klimke , Per-Ola Hagstrand , Ulf Nilsson , Lars Efraimsson , Anette Johansson
IPC: C08L23/14 , C08K5/1575 , H01B3/44
CPC classification number: C08L23/142 , C08K5/1575 , H01B3/441 , C08L2203/202 , C08L2205/025 , C08L2205/24 , C08L2207/02
Abstract: The present invention relates to a polypropylene composition comprising (A) 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, and (B) an alpha-nucleating agent; 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 23.0 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 5.0 g/10 min, and a flexural modulus of not more than 470 MPa, 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：US11756700B2
公开(公告)日：2023-09-12
申请号：US16659511
申请日：2019-10-21
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
IPC: H01B3/44 , H01B7/295 , H01B3/20 , C08K5/00 , C08F10/02 , C08F110/02 , C08F210/02
CPC classification number: H01B3/441 , C08F10/02 , C08K5/005 , H01B3/20 , H01B7/295 , C08F110/02 , C08F210/02 , C08F2500/08 , C08F10/02 , C08F2/00 , C08F110/02 , C08F2500/12 , C08F210/02 , C08F236/20 , C08F2500/12 , C08F210/02 , C08F220/12 , C08F2500/12
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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公开(公告)号：US20210027912A1
公开(公告)日：2021-01-28
申请号：US17011613
申请日：2020-09-03
Applicant: Borealis AG
Inventor： Villgot ENGLUND , Per-Ola Hagstrand , Ulf Nilsson , Annika Smedberg , Jan-Ove Bostrom , Andreas Farkas , Gustavo Dominguez
Abstract: The invention relates to a use of a polymer composition with improved DC electrical properties in a power cable layer and to a cable surrounded by at least one layer comprising the polymer composition.
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公开(公告)号：US10886034B2
公开(公告)日：2021-01-05
申请号：US16311494
申请日：2017-06-20
Applicant: BOREALIS AG
Inventor： Per-Ola Hagstrand , Villgot Englund , Johan Andersson , Virginie Eriksson , Annika Smedberg , Ulf Nilsson , Karl Nielsen , Thomas Gkourmpis , Antonios Gitsas , Mattias Andersson , Christian Müller
Abstract: A cable having one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order. The insulation layer has at least 90 wt % of a polymer composition, said polymer composition having 80.0 to 99.9 wt % of an LDPE homopolymer or copolymer; and 0.1 to 20.0 wt % of: an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000; or a single site catalysed medium density polyethylene (MDPE) having a density of 925 to 940 kg/m3 or a single site catalysed linear low density polyethylene (LLDPE) having a density of 910 to 925 kg/m3.
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公开(公告)号：US10032543B2
公开(公告)日：2018-07-24
申请号：US15456329
申请日：2017-03-10
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
CPC classification number: H01B9/027 , C08J3/24 , C08J2323/08 , C08K3/04 , C08K5/01 , C08K5/14 , H01B3/441 , H01B13/06 , H01B13/22 , 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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Patent Agency Ranking
公开(公告)号：US10586634B2
公开(公告)日：2020-03-10
申请号：US16031934
申请日：2018-07-10
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：US20190326033A1
公开(公告)日：2019-10-24
申请号：US16311494
申请日：2017-06-20
Applicant: BOREALIS AG
Inventor： Per-Ola Hagstrand , Villgot Englund , Johan Andersson , Virginie Eriksson , Annika Smedberg , Ulf Nilsson , Karl Nielsen , Thomas Gkourmpis , Antonios Gitsas , Mattias Andersson , Christian Müller
Abstract: A cable comprising one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein said insulation layer comprises at least 90 wt % of a polymer composition, said polymer composition comprising (I) 80.0 to 99.9 wt % of an LDPE homopolymer or copolymer; and (II) 0.1 to 20.0 wt % of: (i) an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000; or (ii) a single site catalysed medium density polyethylene (MDPE) having a density of 925 to 940 kg/m3 or a single site catalysed linear low density polyethylene (LLDPE) having a density of 910 to 925 kg/m3.
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公开(公告)号：US20170186515A1
公开(公告)日：2017-06-29
申请号：US15456329
申请日：2017-03-10
Applicant: Borealis AG
Inventor： Ulf Nilsson , Annika Smedberg , Alfred Campus
CPC classification number: H01B9/027 , C08J3/24 , C08J2323/08 , C08K3/04 , C08K5/01 , C08K5/14 , H01B3/441 , H01B13/06 , H01B13/22 , 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：US20240002647A1
公开(公告)日：2024-01-04
申请号：US18039023
申请日：2021-11-29
Applicant: Borealis AG
Inventor： Thomas Gkourmpis , Katja Ellen Klimke , Per-Ola Hagstrand , Ulf Nilsson , Lars Efraimsson , Anette Johansson
CPC classification number: C08L23/142 , C08K3/04 , H01B3/441 , C08L2203/202 , C08L2207/02 , C08L2308/00 , C08L2314/02
Abstract: The present invention relates to a semiconductive composition comprising (A) at least 52.0 wt %, preferably from 55.0 to 90.0 wt %, more preferably from 60.0 to 85.0 wt %, most preferably from 65.0 to 80.0 wt % of a heterophasic propylene copolymer having a matrix phase and an elastomeric phase dispersed in said matrix phase, based on the total weight amount of the semiconductive composition; and (B) from 5.0 to 40.0 wt %, preferably from 10.0 to 38.0 wt %, more preferably from 15.0 to 35.0 wt %, most preferably from 20.0 to 33.0 wt % of carbon black based on the total weight amount of the semiconductive composition, an article comprising said semiconductive composition, preferably a cable comprising an semiconductive layer comprising said semiconductive composition and the use of said semiconductive composition as inner and/or outer semiconductive layer for medium and high voltage cables.
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公开(公告)号：US11011287B2
公开(公告)日：2021-05-18
申请号：US15106011
申请日：2014-08-19
Applicant: BOREALIS AG
Inventor： Peter Sunnegårdh , Marc Jeroense , Anders Gustafsson , Pär Lilja , Per-Ola Hagstrand , Villgot Englund , Annika Smedberg , Ulf Nilsson , Johan Andersson , Virginie Eriksson , Jonas Jungqvist , Jonny Brun
Abstract: A transmission cable includes a conductor or a bundle of conductors extending along a longitudinal axis, which is circumferentially covered by an insulation layer having an extruded insulation material, whereby the transmission cable passes the electrical type test as specified in Cigré TB496, whereby the rated voltage U0 is 450 kV or more. The type test includes subjecting the power cable to a DC voltage of 1.85*U0 during 10 to 15 cycles at negative polarity, followed by a polarity reversal with another 10 to 15 cycles at positive polarity at a DC voltage of 1.85*U0, followed by additional 2 to 5 cycles during at least 4 to 10 days at positive polarity, and wherein U0 is 450 kV, or 525 kV, or more.
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