| 摘要 |
PURPOSE:To obtain the titled beautiful resin which causes no gelatinization in production process and has high transparency, by subjecting a partial esterified copolymer of an unsaturated acid anhydride and a vinyl compound to specific treatment and reacting the treated partially esterified copolymer with an unsaturated epoxy compound. CONSTITUTION:Firstly, an alpha, beta-unsaturated acid anhydride is copolymerized with a vinyl compound (preferably styrene) copolymerizable with it and the copolymer is esterified with >=3C monohydric alcohol such as propyl alcohol, etc., preferably at 40-100 deg.C. An unreacted acid anhydride group of the partially esterified polymer is esterified with an aliphatic monohydric alcohol such as methyl alcohol, etc., and a free carboxyl group of the polymer is reacted with an unsaturated epoxy compound such as glycidyl methacrylate, etc., preferably at 40-90 deg.C for 3-20hr to give the aimed resin.
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