EPOXY RESIN, EPOXY RESIN COMPOSITION, PHOTOSENSITIVE RESIN COMPOSITION, AND CURED OBJECT OBTAINED THEREFROM
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:EP1939233A1
公开(公告)日:2008-07-02
[PROBLEMS] To provide an epoxy resin giving a cured object having high heat resistance, which is improved in impact resistance and moisture resistance as compared with conventional high-heat-resistance epoxy resins.
[MEANS FOR SOLVING PROBLEMS] The epoxy resin is obtained by glycidylating one or more phenol compounds comprising 95% or more 1,1,2,2-tetrakis (hydroxyphenyl) ethane, and is characterized in that in an examination by gel permeation chromatography, the epoxy resin has a tetranucleus-form content of 50 to 90% by area and an octanucleus-form content of at least 5% by area and has a total chlorine content of 5,000 ppm or smaller.
[问题] 提供一种环氧树脂,其固化物具有较高的耐热性,与传统的高耐热性环氧树脂相 比,其耐冲击性和防潮性均有所提高。
[解决问题的方法] 该环氧树脂是通过将一种或多种含有 95%或更多 1,1,2,2-四(羟基苯基)乙烷的苯酚化合物缩水甘油化而得到的,其特征在于在凝胶渗透色谱法检查中,该环氧树脂的四核形式含量为 50%至 90%(按面积计算),八核形式含量至少为 5%(按面积计算),总氯含量为 5,000 ppm 或更少。