Use of polyethylene compositions
    5.
    发明申请
    Use of polyethylene compositions 审中-公开
    使用聚乙烯组合物

    公开(公告)号:US20060241256A1

    公开(公告)日:2006-10-26

    申请号:US10535862

    申请日:2003-11-26

    IPC分类号: C08F4/72

    摘要: The use in the manufacture of a polyethylene article of a polyethylene composition comprising 20 to 50% wt of a copolymer of ethylene and a C3-20 alpha olefin comonomer and 50 to 80% wt. Of a lower weight average molecular weight ethylene polymer, the polyethylenes of the composition together having a density of 935 to 965 kg/m3, weight average molecular weight of 60000 to 300000 g/mol, an MFR2.16 at 190° C. of 0.1 to 10 g/10 min., and a molecular weight distribution (MWD) of from 2.5 to 20, the copolymer having a comonomer content of from 0.006 to 9 mol % and a degree of branching of 0.03 to 45 branches per 1000 carbons, and the ethylene polymer having a density of 939 to 975 kg/m3 and a weight average molecular weight of 20000 to 200000 g/mol.

    摘要翻译: 在制造聚乙烯组合物的聚乙烯制品中的用途,其包含20至50重量%的乙烯和C 3-20α-烯烃共聚单体的共聚物和50至80重量% 在较低重均分子量的乙烯聚合物中,组合物的聚乙烯一起具有935至965kg / m 3的密度,重均分子量为60000至300000g / mol,MFR < 在190℃,SUB> 2.16 <0.1 / 10分钟,分子量分布(MWD)为2.5〜20,共聚单体含量为0.006〜9摩尔%,共聚单体含量为0.006〜9摩尔% 支链度为0.03〜45分/ 1000个碳原子,乙烯聚合物的密度为939〜975kg / m 3,重均分子量为20000〜200000g / mol。

    Semiconductive polymer compositions
    7.
    发明授权
    Semiconductive polymer compositions 有权
    半导体聚合物组合物

    公开(公告)号:US07767741B2

    公开(公告)日:2010-08-03

    申请号:US11572475

    申请日:2005-06-21

    IPC分类号: C08K5/00 H01B1/06

    CPC分类号: H01B1/24

    摘要: The present invention relates to a semiconductive polymer composition comprising an olefin homo- or copolymer wherein the composition has a direct current volume resistivity of less than 1000 Ohm·cm at 90° C., an elongation at break which after aging for 240 hours at 135° C. does not change by more than 25%, and a total number of structures of 20 or less in the SIED test. Furthermore, the present invention relates to an electric power cable comprising a conductor, a semiconducting layer and, adjacent to the semiconducting layer, an insulation layer, wherein the semiconducting layer is formed by said semiconductive polymer composition and to the use of said semiconducting polymer composition for the production of a semiconductive layer of an electric power cable.

    摘要翻译: 本发明涉及一种包含烯烃均聚物或共聚物的半导体聚合物组合物,其中组合物在90℃下的直流体积电阻率小于1000欧姆·厘米,断裂伸长率在135℃老化240小时后 在SIED测试中,不会改变25%以上的结构总数,或20以下的结构。 此外,本发明涉及一种电力电缆,其包括导体,半导电层,并且与半导电层相邻的绝缘层,其中所述半导体层由所述半导体聚合物组合物形成,并且使用所述半导体聚合物组合物 用于生产电力电缆的半导体层。

    Electric cable
    8.
    发明授权
    Electric cable 失效
    电缆

    公开(公告)号:US06667098B1

    公开(公告)日:2003-12-23

    申请号:US09958514

    申请日:2001-10-09

    IPC分类号: B32B1508

    摘要: A cable comprising an electrical conductor with insulating and protecting layers surrounding the conductor is described. The cable is characterised in that at least one layer selected from said insulating and protecting layers consists of a crosslinked ethylene-alkyl (meth)acrylate-unsaturated silane terpolymer composition wherein the alkyl (meth)acrylate comonomer comprises more than 5 mole % and the terpolymer composition has a tensile modulus, determined according to ISO 527-2 (1 mm/min) of less than 100 MPa. Preferably, the crosslinked ethylene-alkyl (meth)acrylate polymer is a moisture curable ethylene-alkyl (meth)acrylate-vinyl trialkoxysilane terpolymer, wherein the trialkoxysilan termonomer comprises 0.2-5% by weight of the polymer composition. The polymer composition may include from 0 up to 50% by weight of a plasticiser, up to 60% by weight of a filler, and up to 10% by weight of an additive.

    摘要翻译: 描述了包括具有围绕导体的绝缘和保护层的电导体的电缆。 电缆的特征在于,选自所述绝缘和保护层中的至少一层由交联的(甲基)丙烯酸烷基酯(甲基)丙烯酸烷基酯 - 不饱和硅烷三元共聚物组合物组成,其中(甲基)丙烯酸烷基酯共聚单体包含大于5摩尔%的三元共聚物 组合物具有根据ISO 527-2(1mm / min)测定的拉伸模量小于100MPa。 优选地,交联的乙烯 - (甲基)丙烯酸烷基酯聚合物是可湿气固化的(甲基)丙烯酸烷基酯 - 乙烯基三烷氧基硅烷三元共聚物,其中三烷氧基硅烷单体包含0.2-5重量%的聚合物组合物。 聚合物组合物可以包括0至50重量%的增塑剂,至多60重量%的填料和至多10重量%的添加剂。

    COAXIAL CABLE
    9.
    发明申请
    COAXIAL CABLE 有权
    同轴电缆

    公开(公告)号:US20090183894A1

    公开(公告)日:2009-07-23

    申请号:US12408248

    申请日:2009-03-20

    IPC分类号: H01B3/30 B05D5/12

    摘要: Certain embodiments of the present technology provide a cable comprising a conductor and a cable layer. The cable layer comprises a polypropylene material. The cable layer and/or the polypropylene material comprise a crystalline fraction crystallizing in the temperature range of 200 to 105° C. determined by stepwise isothermal segregation technique. The crystalline fraction comprises a part, wherein, during subsequent melting at a melting rate of 10° C./min, the part melts at or below 130° C. and the part represents at least 20 percent by weight of the crystalline fraction. In certain embodiments, the part melts at or below the temperature T=Tm−3° C., wherein Tm is the melting temperature of the cable layer and/or the polypropylene material, and the part represents at least 45 percent by weight of the crystalline fraction. Certain embodiments provide methods and processes for manufacturing the cable described above and herein.

    摘要翻译: 本技术的某些实施例提供了包括导体和电缆层的电缆。 电缆层包括聚丙烯材料。 电缆层和/或聚丙烯材料包括在200至105℃的温度范围内结晶的结晶部分,通过逐步等温偏析技术测定。 结晶部分包括一部分,其中在随后以10℃/分钟的熔融速率熔化时,该部分在130℃或低于130℃熔化,该部分表示至少20重量%的结晶部分。 在某些实施方案中,部件在等于或低于T = Tm-3℃的温度下熔化,其中Tm是电缆层和/或聚丙烯材料的熔融温度,并且该部分表示至少45重量% 结晶部分。 某些实施例提供了用于制造上述和本文中的电缆的方法和过程。