| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of producing a macrocyclic oligomer, so that a dental restorative composite reduced in polymerization shrinkage and polymerization stress is obtained. <P>SOLUTION: This invention relates to a method of preparing a free-radical polymerizable macrocyclic oligomer used for restorative dentistry and having at least one polymerizable group, comprising: a step (i) of activating a condensation group of a reactive and free-radical polymerizable precursor ; and a step (ii) of preparing the free-radical polymerizable macrocyclic oligomer under pseudo-high-dilution condition via a condensation between a reactive and free radical polymerizable precursor thus activated and coupling agents to afford carbonate, ester, siloxane, phosphonate linkages. <P>COPYRIGHT: (C)2013,JPO&INPIT |
