A problem to be solved by the invention is to provide a novel epoxy resin exhibiting excellent performance with respect to heat resistance and low thermal expansibility of a cured product, a curable composition using the same, and a cured product having excellent heat resistance and low thermal expansibility. The curable composition contains an epoxy compound and a curing agent as essential components, a calixarene-type novel epoxy compound being used as the epoxy compound. The novel epoxy compound has a resin structure represented by structural formula 1 below (in the formula, R1s each independently represent a hydrogen atom, an alkyl group, or an alkoxy group, and n is a repeat unit and an integer of 2 to 10).
本发明要解决的问题是提供一种在固化产品的耐热性和低热膨胀性方面表现优异的新型环氧
树脂、一种使用该环氧
树脂的固化组合物以及一种具有优异耐热性和低热膨胀性的固化产品。该固化组合物包含环氧化合物和固化剂作为基本成分,环氧化合物是一种萼片烯类新型环氧化合物。新型环氧化合物具有如下结构式 1 所表示的
树脂结构(式中,R1s 分别独立地代表氢原子、烷基或烷氧基,n 代表重复单元和 2 至 10 的整数)。