Olefin-based rubber crosslinked product and method for producing the same

Abstract

A method for producing a crosslinked product of ethylene-α-olefin-non-conjugated diene copolymer rubber, including: adding a recycled material, containing used ethylene-α-olefin-non-conjugated diene copolymer rubber and carbon black, which is subjected to application of shear force and devulcanization treatment, to a virgin material containing uncrosslinked ethylene-α-olefin-non-conjugated diene copolymer rubber, carbon black, and a crosslinking agent; mixing the virgin material and the recycled material to prepare a composition; and crosslinking the composition, and a crosslinked product of ethylene-α-olefin-non-conjugated diene copolymer rubber, having both high stiffness and high resistance to electrolytic corrosion without excessively reducing the amount of carbon black or using expensive carbon black.

Dependencies are inferred from the claim text.