C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/02 (2006.01) C08K 5/13 (2006.01) C08K 5/134 (2006.01) C08K 5/20 (2006.01) C08K 5/25 (2006.01) C08K 5/5333 (2006.01) H01B 3/42 (2006.01)
Patent
CA 2091530
ABSTRACT OF THE DISCLOSURE A polyolefin composition having improved oxidative stability is provided. the stabilized composition comprises an ethylene homopolymer or copolymer with a divalent metal-containing hindered phenolic antioxidant and metal deactivator having one or more hindered phenol groups linked to a hydrazo or ozamido group. The stabilized polyolefin composition is useful in the insulation of wire and cable and are characterized by increased resistance to oxidation. The composition also retains a high degree of oxidative stability upon exposure to water-blocking cable fillers. A preferred embodiment of the composition includes a third stabilizer of the compound pentaerythirtyl tetrakis [3(3',5'-di-t-butyl-4'hydroxyphenyl) propionate].
Mcfadden Fincham
Quantum Chemical Corporation
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