Ohe Y, Kadoma Y, Imai Y
Shika Zairyo Kikai. 1989 Jul;8(4):546-50.
New experimental acrylic resins were prepared by polymerization of MMA in the presence of vinylidene fluoride/hexafluoropropylene copolymer. The amount of residual monomer in the resins prepared by visible light curing, cold curing, and heat curing, at various polymer/monomer ratios, was measured and compared with the usual MMA/PMMA resin. In the visible light cured resins containing 60 or 70 wt% of the fluoropolymer, the amount of residual monomer was less than 0.1%. In the cold cured resins, the amount of residual monomer was very low: 0.2% and 0.7% for the resins containing 70 and 60 wt% of the polymer, respectively. These values were comparable to the usual heat cured MMA/PMMA resins. In the heat cured resins, the amount of residual monomer was the lowest; less than 0.1%, even in the resin consisting of 50 wt% polymer. Thus, we prepared new acrylic resins with much less residual monomer than the usual MMA/PMMA resins.
通过在偏二氟乙烯/六氟丙烯共聚物存在下使甲基丙烯酸甲酯发生聚合反应，制备了新型实验性丙烯酸树脂。测定了在不同聚合物/单体比例下通过可见光固化、冷固化和热固化制备的树脂中残留单体的量，并与常规的甲基丙烯酸甲酯/聚甲基丙烯酸甲酯树脂进行了比较。在含有60%或70%重量比含氟聚合物的可见光固化树脂中，残留单体的量小于0.1%。在冷固化树脂中，残留单体的量非常低：对于分别含有70%和60%重量比聚合物的树脂，残留单体量分别为0.2%和0.7%。这些值与常规的热固化甲基丙烯酸甲酯/聚甲基丙烯酸甲酯树脂相当。在热固化树脂中，残留单体的量最低；即使在由50%重量比聚合物组成的树脂中，残留单体量也小于0.1%。因此，我们制备出了残留单体比常规甲基丙烯酸甲酯/聚甲基丙烯酸甲酯树脂少得多的新型丙烯酸树脂。
