PROBLEM TO BE SOLVED: To provide a method for manufacturing a vinyl-group containing compound which has high yield, a little disadvantageous impurities and high purity, and is expressed in the general formula (a) and/or (a), and also to provide a medical instrument using the compound, while R1 represents hydrogen or methyl group in the formula.SOLUTION: A (meth)acrylic acid corresponding to an alkali metal salt of the (meth)acrylic acid is subjected to react against an allylglycidylether in the presence of the alkali metal salt of the (meth)acrylic acid. Then, an organic solvent with solubility parameter of 8.3 or more and solubility to water of 3% or less is added to the reaction liquid to make into a solution. This solution is cleansed once or more with an aqueous solution or pure water, so as to manufacture a vinyl-group containing compound. Further, substituent and functional groups are added to the vinyl-containing compound for polymerization.COPYRIGHT: (C)2014,JPO&INPIT【課題】高収率で、不利な不純物が少ないと共に純度が高い、下記一般式(a)および/または(a’)で表されるビニル基含有化合物および、これを用いた医療用具を製造する方法を提供する。(ここで、R1は水素またはメチル基を表す。)【解決手段】アリルグリシジルエーテルに、(メタ)アクリル酸のアルカリ金属塩存在下で該(メタ)アクリル酸のアルカリ金属塩に対応する(メタ)アクリル酸を反応せしめた後に、その反応液を溶解度パラメータが8.3以上、かつ該溶媒の水への溶解度が3%以下の有機溶媒を添加して溶液とし、該溶液を水溶液及び/または純水で1回以上洗浄して、ビニル基含有化合物を製造する。更に、該ビニル含有化合物に置換基、官能基を付加せしめて、重合する。【選択図】なし
