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    • 1. 发明授权
    • Additive for communication cable filler and filler for communication cable
    • 通讯电缆填料和填料用于通讯电缆的添加剂
    • US06841643B2
    • 2005-01-11
    • US10149966
    • 2001-10-18
    • Hideo ToyodaKazunori Okawa
    • Hideo ToyodaKazunori Okawa
    • C08F210/16H01B3/44
    • H01B3/441C08F210/16C08F210/08C08F2500/23C08F210/06C08F210/14
    • The additive (b) for a communication cable filler according to the present invention contains as a main component an ethylene/α-olefin copolymer (a) having a number-average molecular weight (Mn), measured by GPC, of 500 to 5,000 and having a crystallizing temperature (Tc (° C.), rate of temperature decrease: 2° C./min) measured by DSC and a density (D (kg/m3)) measured by a density gradient tube method, said Tc and D satisfy the following formula (1): 0.501×D(kg/m3)−366≧Tc(° C.)  (1). The communication cable filler (c) according to the invention is prepared by blending (X) 40 to 90% by mass of polybutene (d) having a number-average molecular weight of 200 to 2,400, (Y) 1 to 50% by mass of an oil (e) and (Z) 1 to 15% by mass of the ethylene/α-olefin copolymer (a). The additive for a communication cable filler and the communication cable filler are excellent in the filling workability and the oil retention properties of a cable jelly.
    • 根据本发明的通信电缆填料的添加剂(b)含有通过GPC测量的数均分子量(Mn)为500-5,000的乙烯/α-烯烃共聚物(a)作为主要成分,和 具有通过DSC测定的结晶温度(Tc(℃),温度降低速率:2℃/ min)和通过密度梯度管法测量的密度(D(kg / m 3)),所述 Tc和D满足下式(1):根据本发明的通信电缆线填充剂(c)通过将(X)40〜90质量%的数均分子量为200的聚丁烯(d)与 2,400,(Y)1〜50质量%的油(e)和(Z)1〜15质量%的乙烯/α-烯烃共聚物(a)。 用于通信电缆填料的添加剂和通信电缆填料在电缆果冻的填充可加工性和保油性方面是优异的。