Expanded materials with nadimide resin base
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United States of America Patent
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Jul 30, 1991
Grant Date -
N/A
app pub date -
Oct 17, 1990
filing date -
Oct 17, 1989
priority date (Note) -
Expired
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Abstract
Expanded material obtained by heating a composition comprising at least onehermosetting nadimide resin, said heating being performed at a temperature and during a period which are sufficient to cause the expansion of said composition by release of cyclopentadiene. A nadimide resin of the polyimide type and having a number average molecular weight of 600 to 10,000 is preferably used. The composition further comprises preferably 1% to 50% by weight of a linear, preferably thermostable polymer.
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