According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.
根据本发明,提供了一种安全高效地生产环氧化聚合物的工业上有利的工艺,其中具有烯烃碳-碳双键的聚合物的环氧化是在基本上没有碱
金属离子存在的情况下进行的,方法是将含有(i)
钨酸
铵和/或
钨磷酸和(ii)
磷酸的
水溶液,其中(ii)
磷酸的量相对于(i)
钨酸
铵和/或
钨磷酸中含有的1克
钨原子不小于0.25摩尔(相对于(i)
钨酸
铵和/或
钨磷酸铵中所含的1克
钨原子)和
过氧化氢水溶液,分别加入上述聚合物和季
铵盐在与
水不相溶的有机溶剂中的溶液中。