| abstract |
(57) [Summary] [Structure] A vulcanizable rubber composition of the present invention comprises ethylene, a metallocene-based catalyst, and ethylene having 3 carbon atoms. .About.20 .alpha.-olefin and non-conjugated polyene, ethylene / .alpha.-olefin / non-conjugated polyene copolymer rubber (A) and diene rubber (B) are contained in a specific ratio. This component (A) has a molar ratio of a unit derived from ethylene and a unit derived from an α-olefin having 3 to 20 carbon atoms, an iodine value, and an intrinsic viscosity [η] within a specific range. [Effect] The above rubber composition is excellent in dynamic fatigue resistance, heat aging resistance, weather resistance and ozone resistance without impairing the excellent mechanical properties, abrasion resistance and low temperature flexibility of the diene rubber. It is possible to provide a vulcanized rubber. |