The polymerization characteristic composition which contains the epoxy compound and the polymerization characteristic ethylene unsaturated resin which has the acid functional group is offered. In that, you polymerize the epoxy compound with the cationic polymerization which is started by the acid functional group as for the polymerization characteristic ethylene unsaturated resin you polymerize with the free radical polymerization. Because of that, two liquid mixed type polymerization characteristic compositions which have the second section which includes the part which includes the epoxy compound and the polymerization characteristic ethylene unsaturated resin which has the acid functional group are offered. Part and both of the second section or either one as for one side the radical initiator which has the effect which makes self hardening or photo-curing start with the free radical polymerization is contained.エポキシ化合物と酸官能基を持つ重合性エチレン系不飽和樹脂を含有する重合性組成物が提供される。それにおいては、エポキシ化合物は酸官能基によって開始されるカチオン重合により重合し、重合性エチレン系不飽和樹脂はフリーラジカル重合により重合する。そのため、エポキシ化合物を含む第一部と、酸官能基を持つ重合性エチレン系不飽和樹脂を含む第二部を備えた二液混合型重合性組成物が提供される。第一部および第二部の両方またはどちらか一方はフリーラジカル重合により自己硬化または光硬化を開始させる効果のあるラジカル開始剤を含有している。
