Crosslinked olefin elastomer foam and elastomer composition therefor
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United States of America Patent
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Sep 9, 2003
Grant Date -
Jan 16, 2003
app pub date -
Nov 13, 2001
filing date -
Oct 30, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/.alpha.-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.
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