| 摘要 |
PROBLEM TO BE SOLVED: To provide a new thermoplastic elastomer composition rich in flexibility and excellent in molding processability, rubber-like characteristics, mechanical strength, compression permanent set characteristics and vibration-damping property. SOLUTION: This thermoplastic elastomer composition contains an isobutylene-based block copolymer (A) containing a polymer block consisting mainly of isobutylene and a polymer block consisting mainly of an aromatic vinyl-based compound and an isobutylene-based polymer (B) having an alkenyl group at its terminal, wherein the isobutylene-based polymer (B) is cross-linked by a hydrosilyl group-containing polysiloxane (C), and the hydrosilyl group-containing polysiloxane (C) has≥3 hydrosilyl groups and≥3 and≤500 siloxane units. COPYRIGHT: (C)2004,JPO&NCIPI
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