PROBLEM TO BE SOLVED: To provide a method of efficiently producing a polymerizable composition having desired filler density by kneading a powdery filler and a liquid monomer.SOLUTION: The method of producing the polymerizable composition includes: a first casting step of casting the powdery filler and the liquid monomer into a first stirring vessel a first kneading step of kneading the monomer and filler by automatically rotating the stirring blades of the stirring vessel to obtain a kneaded base material for dilution a second casting step of recovering the base material obtained through the first kneading step from the first stirring vessel and then casting the base material and liquid monomer requirement into a second stirring vessel and a second kneading step of automatically rotating and revolving the second stirring vessel for stirring, thereby obtaining a kneaded material having the desired filler density.COPYRIGHT: (C)2013,JPO&INPIT【課題】粉末状のフィラーと液状のモノマーを混練して、所望のフィラー濃度の重合性組成物を効率良く製造する方法を提供すること。【解決手段】重合性組成物の製造方法は、液状のモノマーと粉末状のフィラーを第1の攪拌容器に投入する第1の投入工程と、撹拌容器の撹拌羽根を自転させて、モノマーとフィラーとを混練して希釈用混練母材を得る第1の混練工程と、上記第1の混練工程により得られた希釈用混練母材を前記第1の撹拌容器から回収して、第2の撹拌容器に前記希釈用混練母材と必要量の液状のモノマーを投入する第2の投入工程と、前記第2の撹拌容器を自転、公転させて混練して、所望のフィラー濃度の混練材を得る第2の混練工程とを含む。【選択図】図5
