Method for producing water tree-resistant, TRXLPE-type cable sheath
    22.
    发明授权
    Method for producing water tree-resistant, TRXLPE-type cable sheath 有权
    生产防水树脂TRXLPE型电缆护套的方法

    公开(公告)号:US09058918B2

    公开(公告)日:2015-06-16

    申请号:US12993287

    申请日:2009-05-18

    CPC分类号: H01B7/282 H01B13/148

    摘要: TRXLPE-type cable sheaths are prepared by a method in which a solid polymer is mixed with a liquid water tree-resistant agent either by dosing or direct injection. In the dosing method, the solid polymer, e.g., high pressure LDPE, is sprayed or otherwise contacted with the liquid agent, e.g., PEG, the agent is allowed to absorb into the polymer, and the polymer with absorbed agent is then fed to an extrusion apparatus for extrusion over a sheathed or unsheathed wire or optic fiber. In the direct injection method, the solid polymer is first fed to an extrusion apparatus, and the liquid agent is sprayed or otherwise contacted with the polymer before the two are blended with one another through the action of the mixing elements of the apparatus.

    摘要翻译: TRXLPE型电缆护套通过一种方法制备,其中固体聚合物通过定量给药或直接注射与液体耐水树胶混合。 在定量给料方法中,固体聚合物例如高压LDPE被喷射或以其它方式与液体试剂(例如PEG)接触,使试剂吸收到聚合物中,然后将具有吸收剂的聚合物进料到 用于在护套或未涂覆的线或光纤上挤出的挤出设备。 在直接注射方法中,首先将固体聚合物进料到挤出装置中,并且通过装置的混合元件的作用将液体剂彼此喷雾或以其它方式与聚合物接触。

    Coated conductor with voltage stabilized inner layer
    23.
    发明授权
    Coated conductor with voltage stabilized inner layer 有权
    具有电压稳定内层的涂层导体

    公开(公告)号:US09040828B2

    公开(公告)日:2015-05-26

    申请号:US13822236

    申请日:2011-09-23

    IPC分类号: H01B3/44 C08K5/3492 H01B7/28

    摘要: Disclosed are polymeric compositions with improved breakdown strength. The polymeric compositions contain a polyolefin and a voltage stabilizing agent. The voltage stabilizing agent contains a triazine. The triazine may include a substituent that enables keto-enol tautomerism, which provides the voltage stabilizing agent with additional energy dissipation capacity. The present polymeric compositions exhibit improved breakdown strength when applied as an insulating layer for power cable.

    摘要翻译: 公开了具有改进的击穿强度的聚合物组合物。 聚合物组合物含有聚烯烃和电压稳定剂。 电压稳定剂含有三嗪。 三嗪可以包括能够产生酮 - 烯醇互变异构的取代基,其为电压稳定剂提供额外的能量耗散能力。 当用作电力电缆的绝缘层时,本发明的聚合物组合物表现出改进的击穿强度。

    Magnesium hydroxide-based flame retardant compositions made via in-situ hydration of polymer compounds comprising magnesium oxide
    26.
    发明授权
    Magnesium hydroxide-based flame retardant compositions made via in-situ hydration of polymer compounds comprising magnesium oxide 有权
    通过含氧化镁的聚合物化合物的原位水合制备的基于氢氧化镁的阻燃剂组合物

    公开(公告)号:US08067494B2

    公开(公告)日:2011-11-29

    申请号:US12444785

    申请日:2007-10-29

    IPC分类号: C01F5/16 C08K3/22

    CPC分类号: C08J3/203 C08F2/44 C09K21/02

    摘要: Magnesium oxide (MgO) compounded into a polymer can subsequently be hydrated in-situ within the polymer to form magnesium hydroxide. In the case of silane-based or peroxide-based crosslinkable resins, the MgO hydration and polymer crosslinking can be done in a single process step, or in sequential steps. In the case of non-crosslinkable compounds, hydration can be carried out after compounding (no crosslinking step). In all cases, steam CV, sauna, or hot water bath are options for hydration. This approach enables preparation of polymer compounds that are flame retarded with metal hydrates yet free of the traditional limitations posed by shelf instability, extrusion scorch, undesired dehydration, and processing temperature limitations posed by metal hydrates.

    摘要翻译: 混合成聚合物的氧化镁(MgO)可随后在聚合物内原位水合形成氢氧化镁。 在硅烷基或过氧化物基交联树脂的情况下,MgO水合和聚合物交联可以在单一工艺步骤中或在顺序步骤中进行。 在不可交联化合物的情况下,水合可以在配混后进行(无交联步骤)。 在所有情况下,蒸汽CV,桑拿浴室或热水浴都是水合的选择。 这种方法能够制备用金属水合物阻燃的聚合物化合物,但没有由金属水合物构成的不稳定性,挤出焦烧,不期望的脱水和加工温度限制所带来的传统限制。

    Cable comprising a shear thickening composition
    27.
    发明授权
    Cable comprising a shear thickening composition 有权
    电缆包括剪切增稠组合物

    公开(公告)号:US08045833B2

    公开(公告)日:2011-10-25

    申请号:US12517326

    申请日:2007-11-29

    IPC分类号: G02B6/44 H01B7/17 H02G15/00

    CPC分类号: H01B7/295

    摘要: Shear thickening compositions can function in an energy or communications transmission cable to provide enhanced protection against externally applied forces, e.g., cutting or puncture from a shovel. As a free or bound layer, or when used via impregnation into a substrate used for an internal component or wrap, the shear thickening composition provides protection against mechanical damage that far surpasses conventional technologies. In foamable compositions for cable components, the shear thickening composition provides enhanced integrity of the polymer melt for enhanced foam performance. As a flame retardant component, the shear thickening composition provides an enhanced char formation mechanism for superior flame retardance.

    摘要翻译: 剪切增稠组合物可以在能量或通信传输电缆中起作用,以提供防止外部施加的力的增强的保护,例如从铲中切割或穿刺。 作为自由或结合的层,或当通过浸渍用于内部组分或包裹物的基材中使用时,剪切增稠组合物提供远远超过常规技术的机械损伤的保护。 在用于电缆组件的可发泡组合物中,剪切增稠组合物提供增强的聚合物熔体的完整性以增强泡沫性能。 作为阻燃组分,剪切增稠组合物提供了增强的炭形成机理,用于优异的阻燃性。

    Nitroxide Compounds for Minimizing Scorch in Crosslinkable Compositions
    28.
    发明申请
    Nitroxide Compounds for Minimizing Scorch in Crosslinkable Compositions 失效
    用于最小化可交联组合物焦烧的硝酸化合物

    公开(公告)号:US20080085973A1

    公开(公告)日:2008-04-10

    申请号:US11539815

    申请日:2006-10-09

    IPC分类号: C07D211/00 C08F2/38

    摘要: Scorch is inhibited during the free-radical crosslinking of a crosslinkable polymer, e.g., an EPDM, by incorporating into the polymer before melt processing and crosslinking a scorch inhibiting amount of a derivative, preferably an ether, ester or urethane derivative, of a TEMPO compound, e.g., 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl. The scorch inhibitors of this invention perform as well, if not better, than their 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl counterparts in similar polymer compositions and under similar conditions in terms of scorch inhibition and ultimate degree of crosslinking, but exhibit less volatility and less migration within the polymer composition.

    摘要翻译: 在可交联聚合物(例如EPDM)的自由基交联期间,通过在熔融加工和交联焦烧抑制量的TEMPO化合物的衍生物,优选醚,酯或氨基甲酸酯衍生物的交联之前引入聚合物中,焦烧被抑制 ,例如4-羟基 - 四氢环丁基哌啶-1-基。 在类似的聚合物组合物和类似的条件下,本发明的焦烧抑制剂(如果不是更好)也与其4-羟基 - 四烃基哌啶-1-氧基对应物一样,在焦烧抑制和最终交联度方面也表现出较低的挥发性, 聚合物组合物内迁移少。

    Telephone cables
    29.
    发明授权
    Telephone cables 失效
    电话线

    公开(公告)号:US5453322A

    公开(公告)日:1995-09-26

    申请号:US253386

    申请日:1994-06-03

    IPC分类号: H01B3/44 H01B7/28 B32B15/00

    摘要: An article of manufacture comprising (i) a plurality of electrical conductors having interstices therebetween, each conductor being surrounded by one or more layers of a composition comprising (a) one or more polyolefins and, blended therewith, (b) a mixture containing one or more alkylhydroxyphenylalkanoyl hydrazines and a defined functionalized hindered amine; and (ii) hydrocarbon cable filler grease within the interstices.

    摘要翻译: 一种制造品,其包括(i)多个电导体,其间具有间隙,每个导体由一层或多层组合物包围,所述组合物包含(a)一种或多种聚烯烃,并与其混合,(b)含有一种或多种 更多的烷基羟基苯基烷酰基肼和定义的官能化受阻胺; 和(ii)间隙内的碳氢化合物电缆填料润滑脂。

    In situ moisture generation and use of polyfunctional alcohols for crosslinking of silane-functionalized resins
    30.
    发明授权
    In situ moisture generation and use of polyfunctional alcohols for crosslinking of silane-functionalized resins 有权
    用于交联硅烷官能化树脂的多官能醇的原位水分产生和使用

    公开(公告)号:US08460770B2

    公开(公告)日:2013-06-11

    申请号:US12740838

    申请日:2008-10-13

    摘要: Polymer compositions comprise a (i) silane-functionalized polymer, e.g., a polyethylene grafted with vinyl triethoxy silane, (H) polyfunctional alcohol e.g., α,α,α′,α′˜tetramethyl-I,3-benzenediethanol and, optionally, (iii) acid, e.g., an alkylated aryl disulfonic acid. The use of polyfunctional alcohols in the absence of a strong acid yields a light-crosslinking of the silane-functionalized polymer and this, in turn, provides a polymer melt with improved extensional properties such as elongational viscosity and melt strength. The use of a polyfunctional alcohol in combination with a blocked strong acid provides a slow rate of crosslinking during melt processing and a high degree of ultimate crosslinking after the polymer composition has been shaped or molded.

    摘要翻译: 聚合物组合物包含(i)硅烷官能化聚合物,例如用乙烯基三乙氧基硅烷接枝的聚乙烯,(H)多官能醇,例如α,α,α',α'-四甲基-1,3-苯二甲醇, (iii)酸,例如烷基化芳基二磺酸。 在不存在强酸的情况下使用多官能醇产生硅烷官能化聚合物的轻交联,这又提供具有改进的拉伸性能如伸长粘度和熔体强度的聚合物熔体。 使用多官能醇与封闭的强酸组合提供了在熔融加工过程中缓慢的交联速率,以及在聚合物组合物成型或模制之后的高度极限交联。