| 摘要 |
PROBLEM TO BE SOLVED: To provide an expandable composition for an electroacoustic transducer equipped with satisfactory frequency/pressure characteristics with little concavities or convexities by providing a high internal loss. SOLUTION: This expandable composition for an electroacoustic converter is constituted of (A) components, that is, styrene butadience rubber and (B) components, that is, thermoplastic elastomer of a block copolymer constituted of polystyrene and polyisoprene as essential components.
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