| 摘要 |
<p>PURPOSE:To provide a novel curable resin composition having excellent moisture resistance, chemical resistance, heat resistance, moldability, storage stability, etc., and containing a mixture of a polyisocyanate (prepolymer), etc. and a cyanic acid ester composition, etc. CONSTITUTION:The objective resin composition is prepared by mixing or preliminarily reacting (A) a polyisocyanate (prepolymer) or a prepolymer of the isocyanate with an acid anhydride of formula (R is >=2C organic group having >=4 valencies, free of active hydrogen atom, and containing <=3C atoms between the pair of carbonyl groups), etc. with (B) a cyanic acid ester resin composition (pref. having an average molecular weight of 400-6,000).</p> |
