PROBLEM TO BE SOLVED: To provide a chemical polymerization catalyst which is suitably used for a dental material and the like and comprises a combination of an organic peroxide and an amine compound, and which has high polymerization activity, excels also in storage stability, and ensures a small change in the color tone of a cured product.SOLUTION: The chemical polymerization catalyst comprises (A) a hydroperoxide type organic peroxide, (B) an amine compound having at least one amino group in which a hydrogen atom or a methyl group bonds to the nitrogen atom and an unsaturated carbon atom does not bond thereto, or a salt thereof, and (C) an &alpha-diketone compound.COPYRIGHT: (C)2012,JPO&INPIT【課題】 歯科用材料等に好適に使用される、有機過酸化物とアミン化合物とを組合せた化学重合触媒において、高い重合活性を有し、保存安定性にも優れ、且つ、硬化体の色調変化も小さいものを提供すること。【解決手段】 (A)ハイドロパーオキサイド系有機過酸化物、B)窒素原子に、水素原子またはメチル基が結合し、且つ不飽和炭素原子は結合していないアミノ基を少なくとも1つは有するアミン化合物、またはその塩、および(C)α-ジケトン化合物を含むことを特徴とする化学重合触媒。【選択図】 なし
