The present invention is a process for preparing an epoxy resin which comprises reacting (A) a material having an average of more than one aliphatic hydroxyl group per molecule with (B) an epoxy alkyl halide in the presence of (C) an alkali metal hydroxide and (D) at least one phase transfer catalyst, removing the salt formed, allowing the reaction to separate into an aqueous phase and an organic phase, removing the aqueous phase, and recovering the epoxy resin from the organic phase. The invention is characterized by repeating at least once the steps in which the organic phase is reacted with a quantity of component (C) sufficient to cause a separation of the reaction mixture into an aqueous phase and an organic phase and which is at least stoichiometric with the amount of unreacted component (A), removing the saltformed, allowing the reaction mixture to separate into an aqueous phase and an organic phase, and removing the aqueous phase. This process provides for a high level of conversion of the aliphatic hydroxyl-containing material to the corresponding glycidyl ethers.
                            本发明是一种制备环氧
树脂的工艺,它包括在(C)碱
金属氢氧化物和(D)至少一种相转移催化剂存在下,使(A)每分子平均具有一个以上脂肪族羟基的材料与(B)环氧烷基卤化物反应,除去生成的盐,使反应物分离成
水相和有机相,除去
水相,从有机相中回收环氧
树脂。本发明的特点是至少重复一次上述步骤,其中有机相与一定量的组分(C)反应,足以使反应混合物分离成
水相和有机相,且至少与未反应的组分(A)的量达到平衡,除去形成的盐,使反应混合物分离成
水相和有机相,并除去
水相。此工艺可将含脂肪族羟基的物质高度转化为相应的
缩水甘油醚。