| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer excellent in sealing property in addition to mechanical strength.SOLUTION: There is provided a thermoplastic elastomer obtained by dynamically crosslinking a mixture containing (A) 100 pts.mass of acrylic rubber and (B) 15 to 70 pts.mass of a thermoplastic polyester under the condition where (C) 0.1 to 5 pts.mass of a crosslinking agent is present based on 100 pts.mass of the component (A), wherein the acrylic rubber (A) contains (a-1) 100 pts.mass of a constitutional unit derived from an alkyl acrylate ester and/or an alkoxyalkyl acrylate ester and (a-2) 0.5 to 5 pts.mass of a constitutional unit derived from a monofunctional monomer having a carboxyl group, which is a crosslinkable group, on the side chain and contains no polyfunctional monomer. |
