| abstract |
(57) [Summary] (Modified) [PROBLEMS] To provide a vulcanizable rubber composition which can be reduced in weight and which can produce a molded article having excellent strength properties, design properties, compression set resistance and workability. . SOLUTION: The vulcanized rubber product has a hardness of 30-8. 5, a vulcanizable rubber composition having a specific gravity of 0.8 to 1, a tensile strength of 4 to 15 MPa, a tensile elongation at break of 100 to 800%, a compression set of 10 to 60%, and an average foam cell diameter of 1 to 500 µm; A vulcanizable rubber composition comprising an α-olefin / non-conjugated polyene copolymer rubber (A), a polyolefin resin (B) and a foaming agent (C), wherein (A) It is a blend in which (B) is micro-dispersed in a molten state, the average dispersed particle size of (B) is 2 μm or less, and the blend weight ratio of (B) and (A) [(B ) / (A)] is 5/95 to 50/50, and (C) Vulcanizable rubber compositions which are non-supported; a process for producing them; and a rubber product which can be produced by vulcanizing the rubber composition. |