申请人:Nissan Chemical Corporation
公开号:EP3543234A1
公开(公告)日:2019-09-25
There is provided an epoxy composition which has difficulty in precipitating a crystal during storage, is homogeneous and can be stored for a long period; and a cured product of the composition having excellent transparency, heat resistance, and light resistance can be obtained on curing. The curable composition comprises an a-type tris-(2,3-epoxypropyl)-isocyanurate crystal comprising β-type tris-(2,3-epoxypropyl)-isocyanurate in the crystal in a ratio of 2% by mass to 15% by mass; and a carboxylic acid anhydride in a ratio of 0.5 molar equivalent to 1.5 molar equivalent relative to 1 molar equivalent of the crystal, or a cationic curable compound in a ratio of 0.2 molar equivalent to 5 molar equivalent relative to 1 molar equivalent of the crystal, wherein a solid content concentration is 1% by mass to 99% by mass, wherein the solid content ratio is a ratio of the ingredient after removing a solvent from a solution containing the above compounds.
本发明提供了一种环氧树脂组合物,该组合物在贮存过程中很难析出晶体,且均匀,可长期贮存;固化后可获得透明度、耐热性和耐光性极佳的固化物。该可固化组合物包括 a 型三-(2,3-环氧丙基)-异氰尿酸盐晶体,晶体中的 β 型三-(2,3-环氧丙基)-异氰尿酸盐的质量比为 2% 至 15%;以及羧酸酐,相对于 1 摩尔当量的晶体,其质量比为 0.5 摩尔当量至 1.5 摩尔当量,或阳离子可固化化合物,其质量比为 0.2摩尔当量至5摩尔当量的阳离子可固化化合物,其中固体含量浓度为1%(质量)至99%(质量),其中固体含量比率是从含有上述化合物的溶液中去除溶剂后的成分比率。