| abstract |
PURPOSE: To obtain an epoxy resin having improved storage stability and curing characteristic, by using a specific naphthol derivative as an epoxy resin curing agent. n CONSTITUTION: An epoxy compound having ≥2 epoxy groups in one molecule is cured. In the process, a naphthol derivtive having at least 2 hydroxyl groups linked to the naphthalene uncleus, preferably monohydric naphthol in the molecule, preferably a fusible and soluble compound, obtained by linking ≥2 monohydric naphthols (α-naphthol or β-naphthol) and/or a dihydric naphthols through linking chains, having normally ≤5,000 molecular weight and expressed by the formula (p is 1W2; R' is substituent group on the naphthalene uncleus; n is 0W2; R is bi- W tetrafunctional linking group of the naphthalene uncleus; m is a number for keeping the molecular weight at ≤5,000 and further fusibility in relation to R), etc., is used as an epoxy resin curing agent. n COPYRIGHT: (C)1987,JPO&Japio |