EPOXY RESIN COMPOSITION AND PREPREG USING THE SAME
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United States of America Patent
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Issued Date -
May 12, 2011
app pub date -
Jun 6, 2009
filing date -
Jun 25, 2008
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Abstract
Disclosed is an epoxy resin composition comprising at least component [A]: a glycidyl-amino-group-containing polyfunctional epoxy resin, component [B]: an epoxy resin other than the component [A], component [C]: a polyisocyanate compound, component [D]: an aromatic-amine-based curing agent, and component [E]: a thermoplastic resin, characterized in that the epoxy resin composition has an epoxy group concentration of 0.67 to 1.51 Eq/kg of the total amount of the components [A] to [D], and preferably that the component [E] is in a proportion of 10 to 50% by weight of the total epoxy resin composition. Use of a prepreg having the resin composition as a matrix resin makes it possible to obtain a composite material with excellent heat resistance and wet heat resistance together with high mechanical properties.
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