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    Insulation composition for an electric power cable
    2.
    发明授权
    Insulation composition for an electric power cable 有权
    电力电缆绝缘组合物

    公开(公告)号：US06797886B1

    公开(公告)日：2004-09-28

    申请号：US10018644

    申请日：2002-03-28

    申请人： Bill Gustafsson ,  Annika Smedberg ,  Jari Aarila ,  Arja Lehtinen

    发明人： Bill Gustafsson ,  Annika Smedberg ,  Jari Aarila ,  Arja Lehtinen

    IPC分类号： H01B700

    CPC分类号： H01B3/441

    摘要： An insulating composition for an electric power cable, and an electric power cable that includes a conductor surrounded by an inner semiconducting layer, an insulating layer, and an outer semiconducting layer, where the insulating layer consists of said insulating composition. The insulating composition is characterized in that the ethylene polymer is a multimodal ethylene copolymer obtained by coordination catalyzed polymerization of ethylene and at least one other alpha-olefin in at least one stage, said multimodal ethylene copolymer having a density of 0.890-0.940 g/cm3, a MFR2 of 0.1-10 g/10 min, a MWD of 3.5-8, a melting temperature of at most 125° C., and a comonomer distribution as measured by TREF, such that the fraction of copolymer eluted at a temperature higher than 90° C. does not exceed 10% by weight, and the multimodal ethylene copolymer includes an ethylene copolymer fraction selected from (a) a low molecular weight ethylene copolymer having a density of 0.900-0.950 g/cm3 and a MFR2 of 25-500 g/10 min, and (b) a high molecular weight ethylene copolymer having a density of 0.870-0.940 g/cm3 and a MFR2 of 0.01-3 g/10 min.

    摘要翻译： 一种用于电力电缆的绝缘组合物，以及包括由内部半导体层，绝缘层和外部半导体层包围的导体的电力电缆，其中所述绝缘层由所述绝缘组合物组成。 绝缘组合物的特征在于，乙烯聚合物是通过在至少一个阶段中乙烯和至少一种其它α-烯烃的配位催化聚合而获得的多峰乙烯共聚物，所述多峰乙烯共聚物的密度为0.890-0.940g / cm 3，MFR 2为0.1-10g / 10分钟，MWD为3.5-8，熔融温度至多为125℃，共聚单体分布通过TREF测定，使得共聚物的分数在 高于90℃的温度不超过10重量％，多峰乙烯共聚物包括选自（a）密度为0.900-0.950g / cm 3的低分子量乙烯共聚物的乙烯共聚物组分， MFR 2为25-500g / 10min，（b）密度为0.870-0.940g / cm 3，MFR2为0.01-3g / 10min的高分子量乙烯共聚物。

    Process for producing a polyethylene coating on a substrate
    3.
    发明授权
    Process for producing a polyethylene coating on a substrate 有权
    在基材上生产聚乙烯涂层的方法

    公开(公告)号：US07048882B2

    公开(公告)日：2006-05-23

    申请号：US10204321

    申请日：2001-02-19

    申请人： Martti Vähälä ,  Hannu Salminen ,  Arja Lehtinen

    发明人： Martti Vähälä ,  Hannu Salminen ,  Arja Lehtinen

    IPC分类号： B28B3/20 ,  C08F8/00 ,  C08F2/00 ,  B32B27/10

    CPC分类号： C08F297/083 ,  B29C47/0021 ,  B29C47/02 ,  C08F4/65912 ,  C08F4/65927 ,  C08F10/00 ,  C08F10/02 ,  C08F210/16 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2314/06 ,  Y10T428/31895 ,  Y10T428/31931 ,  Y10T428/31938 ,  C08F4/65916 ,  C08F2/001 ,  C08L2666/04 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/13 ,  C08F2500/26

    摘要： This invention concerns a process for coating a substrate, and an extrusion coating structure. According to the present process, the coating is provided by producing a bimodal polyethylene composition by subjecting ethylene, optionally with hydrogen and/or comonomers to polymerization or copolymerization reactions in a multistage polymerization sequence of successive polymerization stages. The polymerization reactions are carried out in the presence of a single site catalyst capable of forming a composition which comprises a low molecular weight component with an MFR2 of 20 g/10 min or more and a density higher than the density of the composition, and a high molecular weight component, said composition having a melt flow rate MFR2 of 5 g/10 min or more and a density of 915–960 kg/m3. The composition is extruded on the substrate as such or by adding 10 wt-% or less, calculated from the total weight of the coating, of high pressure PE-LD by blending into the extrusion composition or by coextrusion.

    摘要翻译： 本发明涉及一种涂覆基材和挤出涂布结构的方法。 根据本发明的方法，通过在连续聚合阶段的多级聚合顺序中使乙烯（任选地与氢和/或共聚单体）进行聚合或共聚反应来制备双峰聚乙烯组合物来提供涂层。 聚合反应在能够形成组合物的单中心催化剂的存在下进行，所述组合物包含20分钟/ 10分钟以上的MFR 2的低分子量组分，密度高于 所述组合物的密度和高分子量组分，所述组合物具有5g / 10min以上的熔体流动速率MFR 2和915-960kg / m 2的密度， 3 。 将该组合物原样挤出到基材上，或者通过混合到挤出组合物中或通过共挤出，通过加入由涂层的总重量计算的10重量％或更少的高压PE-LD。

    Heat sealable polyethylene film and method for its preparation
    5.
    发明授权
    Heat sealable polyethylene film and method for its preparation 有权
    可热封聚乙烯薄膜及其制备方法

    公开(公告)号：US07018710B2

    公开(公告)日：2006-03-28

    申请号：US10312713

    申请日：2001-06-29

    申请人： Kalle Kallio ,  Jari Äärilä ,  Merete Skar ,  Arja Lehtinen

    发明人： Kalle Kallio ,  Jari Äärilä ,  Merete Skar ,  Arja Lehtinen

    IPC分类号： B32B27/08 ,  B32B27/32

    CPC分类号： B32B27/08 ,  B32B27/32 ,  B32B27/327 ,  B32B2250/242 ,  B32B2307/31 ,  B32B2307/412 ,  B32B2307/558 ,  B32B2307/72 ,  B32B2439/70 ,  B32B2439/80 ,  C08L23/06 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2314/06 ,  Y10T428/2817 ,  Y10T428/2878 ,  Y10T428/31855 ,  Y10T428/31913 ,  Y10T428/31938 ,  C08L2666/06

    摘要： A process for the preparation of a heat sealable film comprising a core layer and a sealing layer, said process comprising attaching said core layer to said sealing layer, said sealing layer comprising an ethylene copolymer composition in which: (1) there are two distinct maxima in the TREF fractogram of the ethylene copolymer composition; (2) at lest 10%, of the ethylene copolymer composition elutes in TREF at a temperature of less than 50° C.; (3) at least 25%, of the ethylene copolymer composition elutes in TREF at a temperature of higher than 75° C.; (4) none of the ethylene copolymer composition elutes in TREF at a temperature of higher than 100° C.; (5) the ethylene copolymer composition comprises two components, one of which is of relatively high comonomer content and high molecular weight, the other of which is of relatively low comonomer content and low molecular weight, both components being prepared by polymerisation of ethylene with a C3-20 alpha-olefin in the present of a single site catalyst; (6) the ethylene copolymer composition has a density of between 905 and 930 kg/m3, and an MFR2 between 0.3 and 4.0 g/10 min.

    摘要翻译： 一种制备可热封膜的方法，包括芯层和密封层，所述方法包括将所述芯层附着到所述密封层，所述密封层包含乙烯共聚物组合物，其中：（1）存在两个不同的最大值 在乙烯共聚物组成的TREF分解图中; （2）至少10％的乙烯共聚物组合物在低于50℃的温度下在TREF中洗脱; （3）至少25％的乙烯共聚物组合物在高于75℃的温度下在TREF中洗脱; （4）乙烯共聚物组合物中没有一种在高于100℃的温度下在TREF中洗脱。 （5）乙烯共聚物组合物包含两种组分，其中一种组分具有相对高的共聚单体含量和高分子量，另一种组分的共聚单体含量相对较低，分子量低，两种组分均通过乙烯与 单一位点催化剂存在下的3-30-α-烯烃; （6）所述乙烯共聚物组合物的密度在905至930kg / m 3的范围内，MFR 2之间的密度在0.3至4.0g / 10min之间。

    Polymer composition, a process for the production thereof and films prepared thereof
    7.
    发明授权
    Polymer composition, a process for the production thereof and films prepared thereof 有权
    聚合物组合物，其制备方法和其制备的膜

    公开(公告)号：US06632884B1

    公开(公告)日：2003-10-14

    申请号：US09857901

    申请日：2001-10-01

    申请人： Merete Skar ,  Ole Jan Myhre ,  Arja Lehtinen ,  Harri Hokkanen ,  Hilkka Knuuttila ,  Kalle Kallio ,  Esa Kinnunen ,  Eija Lappi

    发明人： Merete Skar ,  Ole Jan Myhre ,  Arja Lehtinen ,  Harri Hokkanen ,  Hilkka Knuuttila ,  Kalle Kallio ,  Esa Kinnunen ,  Eija Lappi

    IPC分类号： C08F2002

    CPC分类号： C08F10/02 ,  C08F4/65912 ,  C08F4/65916 ,  C08F110/02 ,  C08F210/16 ,  C08F4/65925 ,  C08F2/001 ,  C08F4/65927 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/26 ,  C08F210/08

    摘要： This invention concerns process for producing polyethylene compositions, films prepared thereof and process for the preparation of the films. The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2=0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m3. The invention makes it possible to produce polyethylene compositions for manufacturing films with a good balance between optical and mechanical properties.

    摘要翻译： 本发明涉及生产聚乙烯组合物的方法，其制备的薄膜及其制备方法。 该方法包括使乙烯，任选的氢和共聚单体在多级聚合中进行聚合或共聚反应。 基本上在不存在氢的情况下进行至少一个聚合阶段。 聚合反应在能够形成包含至少10g / 10分钟的MFR低于2分子量组分的组合物的单中心催化剂的存在下进行 并且密度高于组合物的密度和高分子量组分。 组合物的熔体流动速率在MFR 2 = 0.1-5.0g / 10min的范围内，组合物的密度为915-960kg / m 2 <3 。 本发明使得可以生产用于制造具有光学和机械性能之间良好平衡的膜的聚乙烯组合物

    Polymer composition for pipes
    8.
    发明授权
    Polymer composition for pipes 有权
    管道聚合物组成

    公开(公告)号：US06441096B1

    公开(公告)日：2002-08-27

    申请号：US09832227

    申请日：2001-04-10

    申请人： Mats Bäckman ,  Eeva-Leena Heino ,  Solveig Johansson ,  Jussi Laurell ,  Arja Lehtinen ,  Jarmo Lindroos ,  Marja Ora ,  Elisabeth Ribarits ,  Teija Sihvonen ,  Jari {umlaut over (Aa)}rilä

    发明人： Mats Bäckman ,  Eeva-Leena Heino ,  Solveig Johansson ,  Jussi Laurell ,  Arja Lehtinen ,  Jarmo Lindroos ,  Marja Ora ,  Elisabeth Ribarits ,  Teija Sihvonen ,  Jari {umlaut over (Aa)}rilä

    IPC分类号： C08L2300

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08L23/06 ,  C08L23/0815 ,  Y10S138/07 ,  C08F2/001 ,  C08L2666/04 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/17 ,  C08F2500/13 ,  C08F210/14 ,  C08F2500/01 ,  C08F210/08

    摘要： A multimodal polymer composition for pipes is disclosed as well as a pipes made thereof. The polymer is a multimodal polyethylene with a density of 0.930-0.965 g/cm3, and a viscosity at a shear stress of 747 Pa (&eegr;747 Pa) of at least 650 Pa.s, said multimodal polyethylene comprising a low molecular weight (LMW) ethylene homopolymer fraction and a high molecular weight (HMW) ethylene copolymer fraction, said HMW fraction having a weight ratio of the LMW fraction to the HMW fraction of (35-55):(65-45). Preferably, the multimodal polyethylene has a viscosity at a shear stress of 2.7 kPa (&eegr;2.7 kPa) of 260-450 kPa.s; and a shear thinning index (SHI) defined as the ratio of the viscosities at shear stresses of 2.7 and 210 kPa, respectively, of SHI27/210=50-150, and a storage modulus (G′) at a loss modulus (G″) of 5 kPa, of G′5 kPa≧3000 Pa. The pipe is made of the multimodal polymer composition and withstands a stress of 8.0 MPa gauge during 50 years at 20° C. (MRS8.0). Preferably, the pipe has a rapid crack propagation (RCP) S4-value, determined according to ISO 13477:1997(E), of −5° C. or lower and a slow crack propagation resistance, determined according to ISO 13479:1997, of at least 500 hrs at 4.6 MPa/80° C. The polymer composition affords good non-sagging properties to pipe made thereof.

    摘要翻译： 公开了一种用于管道的多峰聚合物组合物以及由其制成的管。 聚合物是密度为0.930-0.965g / cm 3的多峰聚乙烯，剪切应力为747Pa（eta747Pa）下的粘度为至少650Pa.s，所述多峰聚乙烯包含低分子量（LMW） 乙烯均聚物部分和高分子量（HMW）乙烯共聚物部分，所述HMW部分具有LMW部分与HMW部分的重量比（35-55）：（65-45）。 优选地，多峰聚乙烯在剪切应力为2.7kPa（eta2.7kPa）下的粘度为260-450kPa·s; 和剪切稀化指数（SHI），其分别定义为SHI27 / 210 = 50-150的剪切应力分别为2.7和210kPa的粘度比，以及损耗模量（G'）下的储能模量（G'）， '）为5kPa，G'5kPa> = 3000Pa。该管由多峰聚合物组合物制成，并且在20℃下在50年内耐受8.0MPa表压的应力（MRS8.0）。 优选地，管具有根据ISO 13477：1997（E）确定的-5℃或更低的快速裂纹扩展（RCP）S4值，并且根据ISO 13479：1997确定的缓慢的抗裂纹扩展性， 在4.6MPa / 80℃下至少500小时。聚合物组合物为其制成的管制得到良好的不下垂性能。