Low density foamed thermoplastic elastomers
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United States of America Patent
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Jan 29, 1991
Grant Date -
N/A
app pub date -
Jun 15, 1989
filing date -
Jun 15, 1989
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Expired
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Abstract
A foamed thermoplastic elastomer having a substantially uniform closed cell structure and having a specific gravity of less than about 0l.40, an energy return ratio greater than about 0.50 when compressed and released said foam being prepared from a thermoplastic multi-block copolymer elastomer having a Shore D hardness of 25-75.
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