A transparent resin obtained by polymerizing a  monomer having an alkylene oxide group, a polyfunctional  (meth)acrylate having a divalent branched hydrocarbon  group and other copolymerizable vinyl monomer, if  necessary, is suitable as an elementary material for a  plastic lens with excellent heat resistance and hue. 
                            通过聚合具有环氧亚烷基的单体、具有二价支链烃基的多官能(甲基)
丙烯酸酯和其他可共聚的
乙烯基单体(如有必要)而得到的透明
树脂,适合作为塑料镜片的基本材料,具有优异的耐热性和色调。