| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoxy resin providing a cured product having high heat resistance, and adhesiveness and toughness improved than those of a conventional high heat-resistant epoxy resin. SOLUTION: The epoxy resin is obtained by glycidylating a mixture of (a) a condensate of phenols, containing≥80% [area% by high-performance liquid chromatography (detection: 274 nm)] of a compound obtained by the condensation of phenols and glyoxal, and having four phenol groups bound to an ethyl group, with (b) a phenol resin having average 3-13 phenol groups. COPYRIGHT: (C)2008,JPO&INPIT
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