| abstract |
PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer composition suitable for use at a high temperature and having good oil swelling resistance. SOLUTION: A high melting point thermoplastic polymer containing a non-polar rubber and a polar rubber is blended, or a high melting point thermoplastic polymer containing a non-polar rubber or a polar rubber or both is mixed with a non-polar rubber or a polar rubber or a mixture thereof. Blending with a polyolefin thermoplastic polymer containing both produces a thermoplastic elastomer composition. The composition is dynamically vulcanized. |