abstract |
A rubber composition comprising the following components (A) to (F) in the absence of a compound having a zinc content of more than 0.02% by weight: (A) a copolymer rubber of ethylene and α-olefin, a copolymer rubber of ethylene, α-olefin and nonconjugated diene or a copolymer rubber of ethylene and α-olefin and a copolymer rubber of ethylene, α-olefin and non-conjugated diene, (B) magnesia, (C) soot, (D) a polymer of 2,2,4-trimethyl-1,2-dihydroquinoline or 2-mercaptobenzimidazole or a polymer of 2,2,4-trimethyl-1,2-dihydroquinoline and 2-mercaptobenzimidazole, (E) an organic peroxide, and (F) a crosslinking aid. |