SEMICONDUCTIVE SHIELD FREE OF WELD LINES AND PROTRUSIONS

    公开(公告)号:CA3029340A1

    公开(公告)日:2018-01-04

    申请号:CA3029340

    申请日:2016-06-30

    Abstract: Semiconductive shield layers for power cable constructions are made from a composition comprising: (A) A nonpolar, ethylene-based polymer having a density of greater than (>) 0.90 g/cc and a melt index of >20 g/10 min at 190?/2.16 Kg; (B) A polar polymer consisting of ethylene and an unsaturated alkyl ester having 4 to 20 carbon atoms; (C) Acetylene carbon black; and (D) A curing agent; with the provisos that (1) the composition has a phase separated structure, and (2) the weight ratio of nonpolar polymer to polar polymer is from 0.25 to 4.

    CROSSLINKABLE POLYMERIC COMPOSITIONS WITH METHYL-RADICAL SCAVENGERS AND ARTICLES MADE THEREFROM

    公开(公告)号:CA3019428A1

    公开(公告)日:2017-10-05

    申请号:CA3019428

    申请日:2016-09-28

    Abstract: Crosslinkable polymeric compositions for use in, for instance, cable insulation layers, comprise an ethylene-based polymer, an organic peroxide, a crosslinking coagent, and a methyl-radical scavenger comprising at least one derivative of 2, 2, 6, 6-tetramethyl-1-piperidinyloxyl ("TEMPO"), wherein ratio of crosslinking coagent to organic peroxide is less than 1.72:1 on a molar basis. A crosslinked article prepared from a crosslinkable polymeric composition is also disclosed, the crosslinkable polymeric composition comprising, inter alia, a methyl-radical scavenger comprising at least one TEMPO derivative. In addition, a coated conductor comprising a conductive core and a polymeric layer at least partially surrounding the conductive core is disclosed, wherein at least a portion of the polymeric layer comprises the crosslinked article.

    HYBRID SCORCH RETARDANT/CURE CO-AGENT

    公开(公告)号:CA2989195A1

    公开(公告)日:2016-12-22

    申请号:CA2989195

    申请日:2015-06-16

    Abstract: A family of novel hybrid compounds comprise a hindered phenolic scorch retardant and an allyl isocyanurate cure co-agent. Combining these two functionalities into a single molecule provides a synergy between the allyl isocyanurate and phenolic groups that achieves an improved balance between curing and scorch. In one embodiment the compound is a compound of Formula 3, 4, 5 or 6: (Formula 3) (Formula 4) (Formula 5) (Formula 6)

    PROCESOS PARA ELABORACION DE CABLES CON CAPA DE AISLAMIENTO RETICULADO Y CABLES PARA EL MISMO.

    公开(公告)号:MX387998B

    公开(公告)日:2025-03-19

    申请号:MX2017014325

    申请日:2017-11-08

    Abstract: Procesos para fabricar cables y núcleos de cables que tienen una capa de aislamiento reticulado. Los procesos comprenden: (a) proporcionar un centro del cable inicial que tiene un conductor, una primera capa semiconductora, una capa de aislamiento inicial que comprende una composición polimérica reticulable y una segunda capa semiconductora y, (b) someter el centro del cable inicial a un proceso de reticulación. La composición polimérica reticulable comprende un polímero basado en etileno, un peróxido orgánico y un coagente de reticulación de polialilo. El coagente de reticulación de polialilo y el peróxido orgánico están presentes en cantidades suficientes para proporcionar una relación molar del oxígeno alilo con el activo de menos de 1.2.

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