| 摘要 |
PURPOSE:The titled composition, obtained by reacting a polysulfone resin with epichlorohydrin, and incorporating the resultant thermosetting polysulfone resin with an epoxy resin and a curing agent, and having high heat and impact resistance and improved solvent resistance. CONSTITUTION:An epoxy resin composition obtained by reacting a polysulfone resin expressed by the formula (A is bifunctional aromatic group; n is an integer >=2) with epichlorohydrin at <1.0 ratio between OH and Cl in the presence of an alkali to give a thermosetting polysulfone resin, incorporating the resin with a polyfunctional epoxy resin, e.g. N,N,N',N'-tetraglycidyldiaminodiphenylmethane, and an epoxy resin curing agent, e.g. 4,4'-diaminodiphenyl sulfone. EFFECT:The composition has storage stability and operation stability at room temperature, and is suitable to an epoxy resin composition for prepreg.
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