| abstract |
[Problem] To produce a vulcanized rubber foam molded article having excellent vulcanization properties such as heat resistance, weather resistance, ozone resistance, and tear strength, and excellent compression set resistance. To provide a rubber composition for injection sponge and a vulcanized rubber foam molded article thereof. SOLUTION: An organic peroxide (B) of 0.001 to 100 parts by weight of an ethylene / α-olefin / polyene amorphous copolymer (A) in which a polyene is a specific norbornene compound having a terminal vinyl group is used. A rubber composition for an injection sponge, comprising 0.05 mol of a foaming agent (C) and 0.5 to 50 parts by weight of a foaming agent (C). |