| 摘要 |
PROBLEM TO BE SOLVED: To obtain a rubber composition excellent in cold resistance by preventing reduction in cold resistance of a rubber composition obtained by blending a softening agent such as a conventional paraffinic process oil.SOLUTION: There is provided a rubber composition which comprises: 3 to 100 pts.mass of a softening agent (B) which satisfies the following requirements (1) and (2), (1) the softening agent is composed of a Fisher-Tropsch derived base oil and (2) the softening agent has a dynamic viscosity at 40°C of less than 50 cSt; 50 to 250 pts.mass of a reinforcing agent (C) and a crosslinking agent (D), based on 100 pts.mass of an ethylene/3 to 20C α-olefin-nonconjugated polyene copolymer (A).SELECTED DRAWING: None |
