Abstract:
Processes for making cables and cable cores having a crosslinked insulation layer. The processes comprise (a) providing an initial cable core having a conductor, a first semiconductive layer, an initial insulation layer comprising a crosslinkable polymeric composition, and a second semiconductive layer, and (b) subjecting the initial cable core to a crosslinking process. The crosslinkable polymeric composition comprises an ethylene-based polymer, an organic peroxide, and a polyallyl crosslinking coagent. The polyallyl crosslinking coagent and the organic peroxide are present in amounts sufficient to provide an allyl-to-active oxygen molar ratio of less than 1.2.
Abstract:
Crosslinkable polymeric compositions comprising a thermoplastic, non-elastomer ethylene-based polymer, an organic peroxide, and a crosslinking coagent comprising N, N, N', N', N", N" -hexaallyl-1, 3, 5-triazine-2, 4, 6-triamine. Such crosslinkable polymeric compositions and their crosslinked forms can be employed as polymeric layers in wire and cable applications, such as insulation in power cables.
Abstract:
Crosslinkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, and a crosslinking coagent having at least one N, N-diallylamide functional group. Such crosslinkable polymeric compositions and their crosslinked forms can be employed as polymeric layers in wire and cable applications, such as insulation in power cables.
Abstract:
Processes for producing coated conductors with a polymeric coating composition and a cable resulting therefrom. The polymeric coating composition comprises an ethylene polymer, an organic peroxide, and a polybutadiene. The processes comprise coating conductors with the polymeric coating composition, cross-linking the polymeric coating composition, and degassing the resulting cross-linked polymeric coating composition.
Abstract:
Halogen-free flame-retardant polymer composition, preparation method and use thereof are provided. The composition comprises a propylene polymer, a thermoplastic elastomer, and an intumescent flame retardant system comprising a piperazine component. The obtained halogen-free flame-retardant polymer composition is used to make wire or cable sheath.
Abstract:
Provided is a process to form a crosslinked composition, the process comprising applying heat, and optionally radiation, to a composition that comprises at least the following components a) and b) : a) an olefin-based polymer that comprises a total unsaturation ≥ 0.20 /1000C; b) at least one peroxide selected from at least one of the following: i) a peroxide comprising at least one peroxy group comprising an oxyl radical unit of Radical I, ii) a peroxide comprising at least one peroxy group comprising an oxyl radical unit of Radical II, iii) a peroxide comprising at least one peroxy group comprising an oxyl radical unit of Radical III, iv) a peroxide comprising at least one peroxy group comprising an oxyl radical unit of Radical IV, or v) any combination of i) through iv); and wherein Radical I, Radical II, Radical III or Radical IV are each described herein.
Abstract:
An ethylene-based polymer composition includes units derived from ethylene, units derived from a comonomer, and an optionally units derived from a termonomer. The comonomer is a monocyclic organosiloxane (MOCOS) of formula (I) [R 1, R 2SiO 2/2] n wherein n is an integer greater than or equal to 3, each R 1 is independently a (C 2-C 4) alkenyl or a H 2C=C (R 1a) -C (=O) -O- (CH 2) m- wherein R 1a is H or methyl, m is an integer from 1 to 4, and each R 2 is independently H, (C 1-C 4) alkyl, phenyl, or R 1.
Abstract:
Disclosed is a process includes providing (A) an ethylene/MOCOS copolymer composed of (i) units derived from ethylene, (ii) from 0.01 wt% to 0.5 wt% units derived from a comonomer, and (iii) optionally units derived from a termonomer. The comonomer is a monocyclic organosiloxane (MOCOS) of formula (I) [R 1, R 2SiO 2/2] n wherein n is an integer greater than or equal to 3, each R 1 is independently a (C 2‐C 4) alkenyl or a H 2C=C (R 1a)‐C(=O)‐O‐ (CH 2) m‐ wherein R 1a is H or methyl; m is an integer from 1 to 4; and each R 2 is independently H, (C 1‐C 4) alkyl, phenyl, or R 1. The process includes mixing (B) a free radical initiator with (A) the ethylene/MOCOS copolymer to form a mixture, heating the mixture, and forming a crosslinkable ethylene/MOCOS copolymer composition having a gel content greater than 70%.
Abstract:
A composition comprising an ethylene/alpha-olefin interpolymer that comprises the following properties: a) a total unsaturation/1000C ≥ 0.30; b) a molecular weight distribution (MWD) ≤ 3.0; c) a TGIC broadness parameter B 1/4 ≤ 8.0. A solution polymerization process to prepare an ethylene/alpha-olefin/interpolymer; said process comprising polymerizing, in one reactor, at a reactor temperature ≥ 150℃, a reaction mixture comprising ethylene, an alpha-olefin, a solvent, and a metal complex as described herein. A method to determine the TGIC broadness parameter B 1/x of a polymer composition comprising one or more olefin-based polymers.
Abstract:
Provided is a composition, which contains (A) a silane functionalized ethylene-based polymer, (B) a hindered phenol antioxidant, and (C) an aromatic amine-aromatic sulfonic acid salt. A coated conductor including a conductor and a coating which contains said composition on the conductor is also provided.