Importance

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Abstract

A flame-retardant electric wire coating material composition that can improve heat resistance without using electron beam cross-linking, has no risk of reducing the mechanical characteristics and chemical resistance due to no metal hydroxides being added thereto as flame retardants, and can suppress the formation of die lip build-up and the like during manufacturing to achieve favorable productivity, and an insulated electric wire and a wire harness. The electric wire coating material composition may include:

a silane-grafted polyolefin (A);an unmodified polyolefin (B);a modified polyolefin (C);a bromine-based flame retardant and antimony trioxide (D);a cross-linking catalyst batch (E);zinc oxide and an imidazole-based compound modified with a mercapto group, or zinc sulfide (F);an antioxidant, a metal deactivator, and a lubricant (G);silicone oil (H); andno metal hydroxides.

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First Claim