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    A POWER CABLE INSULATION LAYER, A PROCESS FOR THE PREPARATION THEREOF, AND A COMPOSITION THEREFOR
    1.
    发明授权
    A POWER CABLE INSULATION LAYER, A PROCESS FOR THE PREPARATION THEREOF, AND A COMPOSITION THEREFOR 有权
    电力电缆绝缘层，制备方法和组合物

    公开(公告)号：EP1141977B1

    公开(公告)日：2004-03-31

    申请号：EP99958595.3

    申请日：1999-11-12

    申请人： Borealis Technology Oy

    发明人： DAMMERT, Ruth ,  SULTAN, Bernt-Ake ,  FAGRELL, Ola

    IPC分类号： H01B3/44 ,  C08L101/10 ,  C08K5/42 ,  C08J3/24

    CPC分类号： H01B3/46 ,  C08K5/42 ,  C08K5/5419 ,  H01B3/44 ,  C08L43/04

    摘要： A composition for an insulating layer of a medium to high voltage power cable is disclosed. The composition comprises a cross-linkable polymer with hydrolysable silane groups, and a silanol condensation catalyst of formula (I) ArSO3H or a precursor thereof, Ar being a benzene ring substituted with at least one hydrocarbyl radical such that the total number of carbon atoms of the hydrocarbyl radical (s) is 8-20, or a naphthalene ring substituted with at least one hydrocarbyl radical such that the total number of carbon atoms of the hydrocarbyl radical(s) is 4-18, and the catalyst of formula (I) containing 14-28 carbon atoms in total. A medium to high voltage cable with an insulating layer that has a thickness of more than 2 mm and that comprises the cross-linked product of the above mentioned composition is also disclosed, as is a process of preparing such a cable by cross-linking the cable in the presence of steam at a superatmospheric pressure. Preferably the crosslinking is carried out with saturated steam in a vulcanising tube at about 0.8-1.2 MPa and 170-190°C.

    COMPOSITION FOR ELECTRIC CABLES
    5.
    发明公开
    COMPOSITION FOR ELECTRIC CABLES 有权
    成分用于电缆

    公开(公告)号：EP1095381A1

    公开(公告)日：2001-05-02

    申请号：EP99935231.3

    申请日：1999-07-01

    申请人： Borealis Technology Oy

    发明人： BOSTRÖM, Jan-Ove ,  DAMMERT, Ruth ,  GUSTAFSSON, Bill ,  SMEDBERG, Annika

    IPC分类号： H01B3/44 ,  C08L23/06 ,  C08K5/372

    CPC分类号： H01B3/441 ,  C08K5/0025 ,  C08K5/37 ,  C08L23/06 ,  C08L2203/202 ,  C08L2312/00 ,  C08L23/04

    摘要： A composition for an insulating layer of an electric cable is described. The composition contains an ethylene plastic as the base resin and further contains up to about 5 % by weight of additives including antioxidant, and peroxide cross-linking agent. The composition is characterised in that the antioxidant additive includes a compound of the formula (V): R1(-(C=O)O-)k(CH2)1-S-(CH2)m(-O-(C=O)-)nR2 where R1 and R2, which are the same of different, are C7-C23 alkyl, C7-C23 alkenyl, R3-Ar-, Ar-R3-, or AR-, where R3 is C8-C24 alkyl and Ar is C6-C14 aryl; k and n, which are the same of different, are 0 or 1, 1 and m, which are the same or different, are integers ≥0; with the proviso that the compound is free from phenolic groups; and that the compositions is free from compounds having the formula (VI): R-O-(C=O)-CH2CH2SCH2CH2-(C=O)-O-R where R is a C8-C20 alkyl group.

    ELECTRIC CABLE AND A METHOD FOR THE PRODUCTION THEREOF
    8.
    发明公开
    ELECTRIC CABLE AND A METHOD FOR THE PRODUCTION THEREOF 有权
    电缆及方法

    公开(公告)号：EP1125306A1

    公开(公告)日：2001-08-22

    申请号：EP99971143.5

    申请日：1999-10-21

    申请人： Borealis Technology Oy

    发明人： GUSTAFSSON, Bill ,  EKLIND, Hans ,  DAMMERT, Ruth

    IPC分类号： H01B1/24 ,  C08L23/08

    CPC分类号： H01B1/24 ,  C08K3/04 ,  C08L23/0876 ,  C08L2203/202 ,  C08L2312/00 ,  Y02P20/582 ,  Y10T428/2927 ,  Y10T428/2933 ,  Y10T428/294 ,  Y10T428/2947 ,  C08L23/08

    摘要： A semiconducting composition for electric cables, an electric cable incorporating the composition, and a method of producing a cross-linked semiconducting layer of an electric cable are disclosed. The semiconducting composition comprises, based on the total weight of the composition, (a) 50-90 % by weight of an ethylene copolymer, (b) carbon black in an amount at least sufficient to make the composition semiconducting, (c) 0-8 % by weight of a peroxide cross-linking agent, (d) 0-8 % by weight of conventional additives, characterised in that the ethylene copolymer (a) is a heterogeneous ethylene-alkyl (meth)acrylate copolymer, which besides ethylene moieties comprises 2-10 mole % of an alkyl (meth)acrylate comonomer moiety, chosen among methyl (meth)acrylate, ethyl (meth)acrylate, (iso-)propyl (meth)acrylate and butyl (meth)acrylate, and the melting point of which is at least 95 °C and is higher than (108.5 - 1.7 x (mole % of alkyl (meth)acrylate comonomer)) degree centigrade. The copolymer is preferably obtained by high pressure radical polymerisation in a tubular reactor.

    AN INSULATING COMPOSITION FOR COMMUNICATION CABLES
    9.
    发明授权
    AN INSULATING COMPOSITION FOR COMMUNICATION CABLES 有权
    绝缘组合物，电信电缆

    公开(公告)号：EP1093658B1

    公开(公告)日：2004-11-03

    申请号：EP99930082.5

    申请日：1999-06-08

    申请人： Borealis Technology Oy

    发明人： ROGESTEDT, Laila ,  MARTINSSON, Hans-Bertil ,  THORN, Lars ,  DAMMERT, Ruth

    IPC分类号： H01B3/44

    CPC分类号： H01B3/441 ,  Y10T29/49123

    摘要： An insulating composition for communication cables (2) is disclosed as well as a telesingle wire (2) which comprises the insulating composition and a telecommunication cable (1) which comprises a plurality of telesingle wires (2) including the insulating composition. The insulating composition comprises a multimodal olefin polymer mixture, obtained by polymerisation of at least one alpha -olefin in more than one stage having a density of about 0.920-0.965 g/cm , a melt flow rate (MFR2) of about 0.2-5 g/10 min, an FRR21/2 >/= 60, and an environmental stress cracking resistance (ESCR) according to ASTM D 1693 A/10 % Igepal, of at least 500 hrs, said olefin polymer mixture comprising at least a first and a second olefin polymer, of which the first is selected from (a) a low molecular weight (MW) olefin polymer with a density of about 0.925-0.975 g/cm and a melt flow rate (MFR2) of about 300-20 000 g/10 min, and (b) a high molecular weight (MW) olefin polymer with a density of about 0.880-0.950 g/cm and a melt flow rate (MFR21) of about 0.5-20 g/10 min.