Provided is a curable composition with one or more properties improved as compared with conventional curable compositions, the improved properties being selected from transparency and heat resistance of a cured product formed from the compostion and storage stability, handling property and moldability of the composition. The curable composition includes (A) silica fine particles surface-modified with at least one silane compound including at least (A1) a polymerizable silane compound of the general formula (1), (B) a (meth)acrylate compound, and (C) a polymerization initiator,
SiR1aR2bRc(OR)4-a-b-c (1)
wherein R1 is a C11-20 hydrocarbon group having an ethylenic unsaturated group, or a substituted C11-20 hydrocarbon group having an ethylenic unsaturated group and having an ether bond and/or an ester bond; R2 is a hydrogen atom or a C1-4 hydrocarbon group; R3 is a halogen atom; R4 is a hydrogen atom or a C1-10 hydrocarbon group; a is an integer of 1 to 3; b is an integer of 0 to 2; c is an integer of 0 to 3; the sum of a and b is 1 to 3; the sum of a, b and c is 1 to 4.
本发明提供了一种可固化组合物,与传统的可固化组合物相比,该组合物的一种或多种特性得到了改善,改善的特性选自该组合物形成的固化产品的透明度和耐热性,以及该组合物的储存稳定性、处理特性和成型性。可固化组合物包括:(A)用至少一种
硅烷化合物进行表面改性的
二氧化硅微粒,该
硅烷化合物至少包括(A1)通式(1)的可聚合
硅烷化合物,(B)(甲基)
丙烯酸酯化合物和(C)聚合
引发剂、
SiR1aR2bRc(OR)4-a-b-c (1)
其中 R1 是具有
乙烯基不饱和基团的 C11-20 烃基,或具有
乙烯基不饱和基团并具有醚键和/或酯键的取代 C11-20 烃基;R2 是氢原子或 C1-4 烃基;R3 是卤素原子; R4 是氢原子或 C1-10 烃基; a 是 1 至 3 的整数; b 是 0 至 2 的整数; c 是 0 至 3 的整数; a 和 b 之和是 1 至 3; a、b 和 c 之和是 1 至 4。