Carbon fiber-reinforced resin composite materials
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United States of America Patent
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Sep 8, 2009
Grant Date -
Jul 13, 2006
app pub date -
Jan 28, 2004
filing date -
Jan 30, 2003
priority date (Note) -
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Abstract
The present invention discloses: a composition comprising (A) an epoxy group-containing vinyl ester resin having, in the molecule, 0.8 to 0.3 equivalent of epoxy group and 0.2 to 0.7 equivalent of an ethylenically unsaturated group, (B) a radical-polymerizable monomer, (C) a curing agent, and (D) a carbon fiber impregnated with 0.5 to 5% by mass of (d) a vinyl ester resin as a sizing agent, obtained by an addition reaction of an epoxy resin and an ethylenically unsaturated carboxylic acid, and a carbon fiber-reinforced resin composite material produced by curing the above composition.
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