PURPOSE: The titled composition having improved dimensional stability, coating performances, weather resistance, etc., comprising a partially crosslinked substance of ethylene-propylene rubber and an α-olefin polymer and a graft polymer having ethylene-propylene rubber as a base.
CONSTITUTION: (A) 20W80wt% partially crosslinked substance of ethylene-propylene rubber and an α-olefin polymer (e.g., polypropylene, etc.) is blended with (B) 80W20wt% graft polymer obtained by grafting each one or more compounds selected respectively at least two groups of an aromatic vinyl compound (e.g., styrene, etc.), vinyl cyanide compound (e.g., acrylonitrile, etc.) and an unsaturated carboxylic acid alkyl ester compound (e.g., methyl methacrylic acid, etc.) onto ethylene-propylene rubber, and, if necessary, various kinds of additives, to give the desired elastomer composition.
NAKAI FUMIO
TOMARI YUKIO
