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    • 1. 发明授权
    • Insulation composition for an electric power cable
    • 电力电缆绝缘组合物
    • US06797886B1
    • 2004-09-28
    • US10018644
    • 2002-03-28
    • Bill GustafssonAnnika SmedbergJari AarilaArja Lehtinen
    • Bill GustafssonAnnika SmedbergJari AarilaArja Lehtinen
    • H01B700
    • H01B3/441
    • 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.
    • 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。
    • 7. 发明授权
    • Composition for electric cables comprising thiodiol fatty acid diesters
    • 包含硫醇脂肪酸二酯的电缆组合物
    • US06586509B1
    • 2003-07-01
    • US09749500
    • 2000-12-26
    • Jan-Ove BoströmRuth DammertBill GustafssonAnnika Smedberg
    • Jan-Ove BoströmRuth DammertBill GustafssonAnnika Smedberg
    • H01B344
    • H01B3/441C08K5/0025C08K5/37C08L23/06C08L2203/202C08L2312/00C08L23/04
    • A composition for an insulating layer of an electric cable wherein 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(—OO(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, l 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.
    • 用于电缆绝缘层的组合物,其中所述组合物含有乙烯塑料作为基础树脂,并且还含有至多约5重量%的包括抗氧化剂和过氧化物交联剂的添加剂。 该组合物的特征在于抗氧剂添加剂包括式(Ⅴ)化合物:R1( - (C + O)O-)k(CH2)1-S-(CH2)m(-OO(C = O) - )n R 2其中R 1和R 2相同的是C 7 -C 23烷基,C 7 -C 23烯基,R 3 -Ar-,Ar-R 3 - 或AR-,其中R 3是C 8 -C 24烷基,Ar是 c6-c14芳基; k和n是相同或不同的,0或1,l和m相同或不同,它们是> = 0的整数; 条件是该化合物不含酚基; 并且该组合物不含具有式(Ⅵ)的化合物:R-O-(C = O)-CH 2 CH 2 SCH 2 CH 2 - (C = O)-O-R,其中R是C 8 -C 20烷基。