申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0529936A1
公开(公告)日:1993-03-03
Epoxy resin compositions and their cured compositions comprise, as essential components, an epoxy resin and a phenolic resin of a structure formed by crosslinking a phenolic compound with particular trifunctional aromatic residual groups. Preferably, the phenolic resin and the epoxy resin are mixed at such a ratio that 0.5-1.5 moles of hydroxyl groups of the phenolic resin are contained per mole of epoxy groups of the epoxy resin. The resin compositions are low in modulus of elasticity, coefficient of linear expansion and water absorption and are excellent in heat resistance and solder cracking resistance. The resin compositions can be used as semiconductor sealants owing to their superb solder cracking resistance.
环氧树脂组合物及其固化组合物的基本成分包括环氧树脂和酚醛树脂,酚醛树脂的结构是由酚类化合物与特定的三官能芳香残基交联而成。酚醛树脂和环氧树脂的混合比例最好是每摩尔环氧树脂的环氧基团含有 0.5-1.5 摩尔的酚醛树脂羟基。这种树脂组合物的弹性模量、线膨胀系数和吸水性较低,耐热性和耐焊料开裂性极佳。由于具有极佳的耐焊料开裂性,这种树脂组合物可用作半导体密封剂。