[Object] To provide a photocurable composition capable of reducing the amount of surface-unpolymerized-products of an obtained cured body and achieving a high photocuring depth, and to provide, particularly, a photocurable composition that can be suitably used in a photocuring-type denture reline material.
[Solving Means] A photocurable composition includes: a polymerizable monomer such as 2-methacryloxyethyl propionate and 1,9-nonamethylene methacrylate; resin particles such as spherical poly(ethyl methacrylate) particles; an α-diketone compound such as camphorquinone; a tertiary amine compound such as ethyl p-dimethylaminobenzoate; and an α-hydroxycarboxylic acid having an acid dissociation constant of 3.0 or more in water (at 25°C) and two or more carbonyl groups in the same molecule, such as malic acid.
[目的]提供一种光固化组合物,该组合物能够减少固化体表面未聚合产物的数量,并达到较高的光固化深度,特别是提供一种可适当用于光固化型义齿衬垫材料的光固化组合物。
[解决方法】光固化组合物包括:可聚合单体,如
2-甲基丙烯酰氧乙基
丙酸酯和 1,9-壬基
甲基丙烯酸甲酯;
树脂颗粒,如球形聚
甲基丙烯酸乙酯颗粒;α-二酮化合物,如
樟脑醌;叔胺化合物,如对
二甲氨基苯甲酸乙酯;以及α-羟基
羧酸,其酸解离常数为 3.0或更高的α-羟基
羧酸,且同一分子中有两个或更多的羰基,如
苹果酸。