Provided is a curable resin composition capable of forming a cured product that excels in heat resistance, transparency, and flexibility and particularly excels in barrier properties against a corrosive gas (e.g., sulfur oxide).
The curable resin composition includes a compound (U) containing an aliphatic carbon-carbon unsaturated bond and a compound (H) containing a hydrosilyl group and includes at least one of a ladder-type silsesquioxane [A1] and a ladder-type silsesquioxane [A2], where the ladder-type silsesquioxane [A1] contains an aliphatic carbon-carbon unsaturated bond and has a number-average molecular weight of 500-1500 and a molecular weight dispersity (Mw/Mn) of 1.00-1.40 as determined by gel permeation chromatography and calibrated with a polystyrene standard, and the ladder-type silsesquioxane [A2] contains a hydrosilyl group and has a number-average molecular weight of 500-1500 and a molecular weight dispersity (Mw/Mn) of 1.00-1.40 as determined by gel permeation chromatography and calibrated with a polystyrene standard.
本发明提供了一种可固化
树脂组合物,该组合物能够形成具有优异耐热性、透明度和柔韧性的固化产品,尤其是对腐蚀性气体(如氧化
硫)具有优异的阻隔性能。
可固化
树脂组合物包括含有脂肪族碳-碳不饱和键的化合物(U)和含有氢
硅烷基的化合物(H),并包括梯形
硅倍半氧烷[A1]和梯形
硅倍半氧烷[A2]中的至少一种,其中梯形
硅倍半氧烷[A1]含有脂肪族碳-碳不饱和键,其数均分子量为 500-1500,分子量分散度(Mw/Mn)为 1.阶梯型
硅倍半氧烷[A2]含有一个氢
硅烷基,平均分子量为500-1500,分子量分散度(Mw/Mn)为1.00-1.40(通过凝胶渗透色谱法测定,并用聚
苯乙烯标准校准)。