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    • 28. 发明申请
    • CROSSLINKABLE POLYETHYLENE COMPOSITION, METHOD OF MAKING THE SAME, AND ARTICLES MADE THEREFROM
    • 可交联聚乙烯组合物,其制备方法及其制备方法
    • US20100016515A1
    • 2010-01-21
    • US12525688
    • 2008-01-25
    • Bharat I. ChaudharyJohn Klier
    • Bharat I. ChaudharyJohn Klier
    • C08L23/06
    • C08K5/14C08K5/0025C08K5/01C08L51/06C08L23/04C08L2666/02
    • The instant invention is a crosslinkable polyethylene composition, a method of making the same, and articles made therefrom. The crosslinkable polyethylene composition according to instant invention includes a polyethylene component, a crosslinking agent, and a crosslinking coagent. The crosslinking agent is an organic peroxide, and the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds. The crosslinkable polyethylene composition may, optionally, further include a scorch inhibitor, a cure booster, a stable free radical, one or more conventional additives, blends thereof, and/or combinations thereof. The method for producing a crosslinkable polyethylene composition according to instant invention includes the steps of: (1) providing a polyethylene component; (2) providing a crosslinking agent, wherein the crosslinking agent is an organic peroxide; (3) providing a crosslinking coagent, wherein the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds; (4) melt blending the a polyethylene component, the crosslinking agent, and the crosslinking coagent at a temperature in the range of less than the decomposition temperature of the crosslinking agent; and (5) thereby forming the crosslinkable polyethylene composition. The article according to instant invention includes the crosslinked product of a polyethylene component; a crosslinking agent, wherein the crosslinking agent is an organic peroxide; and a crosslinking coagent, wherein the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds.
    • 本发明是可交联聚乙烯组合物,其制备方法和由其制成的制品。 根据本发明的可交联聚乙烯组合物包括聚乙烯组分,交联剂和交联助剂。 交联剂是有机过氧化物,交联助剂是包含至少两个末端碳 - 碳双键的链二烯,亚烷基或烷基四烯化合物。 可交联聚乙烯组合物可以任选地进一步包括焦烧抑制剂,固化促进剂,稳定的自由基,一种或多种常规添加剂,其共混物和/或其组合。 根据本发明的可交联聚乙烯组合物的制造方法包括以下步骤:(1)提供聚乙烯组分; (2)提供交联剂,其中所述交联剂是有机过氧化物; (3)提供交联助剂,其中所述交联助剂是包含至少两个末端碳 - 碳双键的链二烯,亚烷基或烷基四烯化合物; (4)在小于交联剂的分解温度的范围内的温度下熔融共混聚乙烯组分,交联剂和交联助剂; 和(5),从而形成可交联聚乙烯组合物。 根据本发明的制品包括聚乙烯组分的交联产物; 交联剂,其中所述交联剂是有机过氧化物; 和交联助剂,其中所述交联助剂是包含至少两个末端碳 - 碳双键的链二烯,亚烷基或烷基四烯化合物。
    • 29. 发明申请
    • Polypropylene-Based Wire and Cable Insulation or Jacket
    • 聚丙烯基电线电缆绝缘或护套
    • US20080227887A1
    • 2008-09-18
    • US11997787
    • 2006-07-27
    • John KlierDavid Paul WrightBharat Indu Chaudhary
    • John KlierDavid Paul WrightBharat Indu Chaudhary
    • H01B3/44
    • H01B3/441H01B3/28
    • The invention is an electrically conductive device, e.g., a wire or cable, having a crush resistance of at least about 18 pounds per square inch (psi), the device comprising: A. An electrically conductive member comprising at least one electrically conductive substrate, e.g., a wire strand or a pair of twisted wire strands; and B. At least one electric-insulating member substantially surrounding the electrically conductive member, e.g., a polymer coating or layer, the electric-insulating member comprising a polymer blend, the polymer blend comprising: 1. At least about 50 weight percent of a polypropylene, and 2. At least about 10 weight percent of an elastomer. In one embodiment, the blend is characterized as having (i) a hot creep of less than 200% at 150 C, (ii) a dielectric constant at 60 Hz and 90 C of less than about 2.5, (iii) a dissipation factor at 60 Hz and 90 C of less than about 0.005, and (iv) an AC breakdown strength of greater than about 600 v/mil.
    • 本发明是具有至少约18磅/平方英寸(psi)的抗压强度的导电装置,例如电线或电缆,该装置包括:A.导电构件,其包括至少一个导电基底, 例如,绞线或一对扭绞线股; B.至少一个电绝缘构件,其基本上围绕导电构件,例如聚合物涂层或层,所述电绝缘构件包含聚合物共混物,所述聚合物共混物包含:1.至少约50重量%的 聚丙烯和2.至少约10重量%的弹性体。 在一个实施方案中,共混物的特征在于具有(i)在150℃下小于200%的热蠕变,(ii)在60Hz和90℃下的介电常数小于约2.5,(iii) 60Hz和90℃小于约0.005,以及(iv)大于约600v / mil的AC击穿强度。