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    FOAMABLE ETHYLENE POLYMER
    12.
    发明申请
    FOAMABLE ETHYLENE POLYMER 审中-公开

    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

    Inventor： Mattias Bergqvist ,  Thomas Hjertberg ,  Per-Ola Hagstrand ,  Åsa Hermansson

    IPC: C08L23/06 ,  C08K5/00 ,  C08K5/098 ,  C08J9/00 ,  C08K5/14 ,  C08J9/35

    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.

    A NEW LOW MFR POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE
    13.
    发明申请
    A NEW LOW MFR POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE 审中-公开
    新型低MFR聚合物组合物，电力电缆绝缘和电力电缆

    公开(公告)号：US20160329124A1

    公开(公告)日：2016-11-10

    申请号：US15105235

    申请日：2014-08-19

    Applicant: BOREALIS AG

    Inventor： Per-Ola Hagstrand ,  Villgot Englund ,  Annika Smedberg

    IPC: H01B3/44 ,  H01B9/00 ,  C08F255/02 ,  C08K5/375 ,  C08K5/14

    CPC classification number: H01B3/441 ,  C08F255/02 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2810/20 ,  C08K5/01 ,  C08K5/14 ,  C08K5/375 ,  C08L2203/202 ,  C08L2207/066 ,  H01B9/00 ,  C08L23/02 ,  C08F210/02 ,  C08F236/20 ,  C08F2/38

    Abstract: The present invention relates to a polymer composition comprising a polyolefin, peroxide and a sulphur containing antioxidant, wherein said peroxide is present in an amount which corresponds to X mmol —O—O—/kg polymer composition and said sulphur containing antioxidant is present in an amount which corresponds to Y mmol —OH/kg polymer composition, wherein Y1≦Y≦Y2, X≦45 and 0.9*Y+m≦X≦n−k*Y, wherein Y1 is 0.50 and Y2 is 10, and m is 0.8, n is 70 and k is 4.7; and wherein said polymer composition has a melt flow rate (MFR) of less than 1.7, and said polymer composition comprises less than 0.05% by weight (wt %) 2,4-Diphenyl-4-methyl-1-pentene; a crosslinked polymer composition, and use thereof, a power cable insulation, a power cable, useful in high voltage (HV DC) and extra high voltage (EHV DC) direct current applications, and a method for reducing electrical conductivity of a crosslinked polymer composition.

    Abstract translation: 本发明涉及包含聚烯烃，过氧化物和含硫抗氧化剂的聚合物组合物，其中所述过氧化物的存在量相当于Xmmol -O-O- / kg聚合物组合物，所述含硫抗氧化剂存在于 对应于Y mmol -OH / kg聚合物组成的量，其中Y1≤Y≤Y2，X≤45和0.9 * Y +m≤X≤n-k * Y，其中Y1为0.50，Y2为10，m为 0.8，n为70，k为4.7; 并且其中所述聚合物组合物具有小于1.7的熔体流动速率（MFR），并且所述聚合物组合物包含小于0.05重量％（重量％）的2,4-二苯基-4-甲基-1-戊烯; 交联聚合物组合物及其用途，用于高压（HV DC）和超高压（EHV DC）直流应用的电力电缆绝缘，电力电缆以及降低交联聚合物组合物的导电性的方法 。

    NEW CROSSLINKED POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE
    14.
    发明申请
    NEW CROSSLINKED POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE 审中-公开
    新型交联聚合物组合物，电力电缆绝缘和电力电缆

    公开(公告)号：US20160319104A1

    公开(公告)日：2016-11-03

    申请号：US15105238

    申请日：2014-08-19

    Applicant: BOREALIS AG

    Inventor： Per-Ola Hagstrand ,  Villgot Englund ,  Annika Smedberg ,  Andreas Farkas ,  Carl-Olof Olsson

    IPC: C08K5/375 ,  H01B3/44 ,  C08K5/14

    CPC classification number: C08K5/375 ,  C08K5/01 ,  C08K5/14 ,  H01B3/441 ,  C08L23/02

    Abstract: The present invention relates to a crosslinked polymer composition, which is obtained by crosslinking a polymer composition, which polymer composition has a melt flow rate (MFR) of at least 1.7 and comprises a polyolefin, peroxide and sulphur containing antioxidant, characterised by that the crosslinked polymer composition has an Oxidation Induction Time, determined according to ASTM-D3895, ISO/CD 11357 and EN 728 using a Differential Scanning Calorimeter (DSC), which Oxidation Induction Time corresponds to Z minutes, and comprises an amount of peroxide by-products which corresponds to W ppm determined according to BTM2222 using HPLC, wherein Z1≦Z≦Z2, W1≦W≦W2, and W≦p−270*Z, wherein Z1 is 0 , Z2 is 60, W1 is 0 and W2 is 9500, and p is 18500; and use thereof, a power cable insulation and a power cable, useful in high voltage (HV) and extra high voltage (EHV) cable applications direct current (DC) applications.

    Abstract translation: 本发明涉及交联聚合物组合物，其通过交联聚合物组合物获得，该聚合物组合物的熔体流动速率（MFR）为至少1.7，并且包含聚烯烃，过氧化物和含硫的抗氧化剂，其特征在于，交联的 聚合物组合物具有氧化诱导时间，其使用差示扫描量热计（DSC）根据ASTM-D3895，ISO / CD 11357和EN 728测定，氧化诱导时间对应于Z分钟，并且包含一定量的过氧化物副产物， 对应于根据BTM2222使用HPLC测定的W ppm，其中Z1≤Z≤Z2，W1≤W≤W2，W≤p-270×Z，其中Z1为0，Z2为60，W1为0，W2为9500， p为18500; 及其使用，电力电缆绝缘和电力电缆，可用于高压（HV）和超高压（EHV）电缆应用直流（DC）应用。

    POLYPROPYLENE COMPOSTION FOR CABLE INSULATION
    15.
    发明公开
    POLYPROPYLENE COMPOSTION FOR CABLE INSULATION 审中-公开

    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

    IPC: C08L23/14 ,  H01B3/30

    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.

    Polymer composition for cable applications with advantageous electrical properties
    20.
    发明授权
    Polymer composition for cable applications with advantageous electrical properties 有权

    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

    IPC: C08L23/06 ,  C08L23/08 ,  H01B3/44 ,  C08K5/01 ,  C08K5/14

    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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