The present invention provides a novel curable composition in which a reaction is caused to occur between a hydroperoxide and a thiourea compound to initiate polymerization of a radical polymerizable monomer and which has excellent adhesive properties, moderate curability, and excellent long-term storage stability. The present invention relates to a curable composition (A) containing: a radical polymerizable monomer (a1) having no acidic group; a hydroperoxide compound (a2); and at least one cyclic thiourea compound (a3) selected from the group consisting of a substituted ethylenethiourea compound (a3-1), a substituted propylenethiourea compound (a3-2), and a substituted butylenethiourea compound (a3-3) each having a specific structure with a cyclic structure moiety into which a substituent is introduced.
本发明提供了一种新型可固化组合物,在该组合物中,
过氧化氢和
硫脲化合物发生反应,引发可自由基聚合单体的聚合,该组合物具有优异的粘合性、适度的固化性和优异的长期储存稳定性。本发明涉及一种可固化组合物 (A),该组合物包含:不含酸性基团的可自由基聚合单体 (a1);
过氧化氢化合物 (a2);以及至少一种环状
硫脲化合物 (a3),该环状
硫脲化合物选自由取代的
乙烯基硫脲化合物 (a3-1)、取代的
丙烯基
硫脲化合物 (a3-2) 和取代的
丁烯基
硫脲化合物 (a3-3) 组成的组,每种环状
硫脲化合物都具有特定结构,其环状结构分子中引入了一个取代基。