An embodiment of the invention relates to a novel epoxy resin composition. The epoxy resin composition comprises (i) a first epoxy resin having in the molecule thereof at least one water-repellency-imparting group and two or more cyclic aliphatic epoxy groups, and having a number average molecular weight ranging from 8,000 to 22,000 and a polydispersity ranging from 3.5 to 5.0, (ii) a second epoxy resin having in the molecule thereof at least one water-repellency-imparting group and two or more cyclic aliphatic epoxy groups, having a number average molecular weight ranging from 2,500 to 8,000 and a polydispersity ranging from 1.5 to 3.0, and (iii) a cationic polymerization catalyst.
本发明的一个实施方案涉及一种新型环氧
树脂组合物。该环氧
树脂组合物包括:(i) 第一环氧
树脂,其分子中至少有一个憎
水引发基和两个或两个以上的环状脂肪族环氧基,其平均分子量为 8,000 至 22,000 之间,多分散度为 3.5 至 5.0 之间;(ii) 第二环氧
树脂,其分子中至少有一个憎
水引发基和两个或两个以上的环状脂肪族环氧基,其平均分子量为 8,000 至 22,000 之间,多分散度为 3.5 至 5.0 之间。0,(ii)第二种环氧
树脂,其分子中至少有一个憎
水促进基团和两个或两个以上的环状脂肪族环氧基团,其平均分子量为 2,500 至 8,000 之间,多分散度为 1.5 至 3.0 之间,以及(iii)阳离子聚合催化剂。