A process for producing an unsaturated group-terminated high-molecular weight polyalkylene oxide by adding an alkali metal and/or an alkali metal compound capable of producing an alkali metal hydroxide on reaction with water to a hydroxyl-terminated polyalkylene oxide having a repeating unit represented by formula -R¹-O- (wherein R¹ represents a divalent alkylene group having from 2 to 8 carbon atoms) to substitute the hydrogen atom of the hydroxyl end group with an alkali metal (alkoxidation) the resulting polyalkylene oxide is reacted with a polyhalogen compound to increase the molecular weight of the polyalkylene oxide and then additional alkali metal and/or alkali metal compound is added before reacting the resulting high-molecular weight polyalkylene oxide with an unsaturated halogen compound to introduce an unsaturated group to the molecular chain terminals. The first addition of alkali metal and/or alkali metal compound capable of producing an alkali metal hydroxide on reacting with water is added in an amount equivalent to or less than the hydroxyl end groups of said polyalkylene oxide and second addition of alkali metal and/or alkali metal compound is added in an amount equivalent to or greater than the remaining hydroxyl end groups.
一种生产不饱和基团封端的高分子量聚环氧烷的工艺,其方法是在具有式 -R¹-O- 代表的重复单元的羟基封端的聚环氧烷中加入碱
金属和/或与
水反应后能生成碱
金属氢氧化物的碱
金属化合物,以碱
金属取代羟基末端基团的氢原子(烷氧基化)。(其中 R¹ 代表具有 2 至 8 个碳原子的二价烷基),用碱
金属取代羟基末端基团的氢原子 (烷氧基化),所得的聚环氧烷与多卤素化合物反应,以增加聚环氧烷的分子量,然后在所得的高分子量聚环氧烷与不饱和卤素化合物反应之前,再加入碱
金属和/或碱
金属化合物,以在分子链末端引入不饱和基团。第一次加入的碱
金属和/或碱
金属化合物在与
水反应时能生成碱
金属氢氧化物,加入量等于或小于所述聚环氧烷的羟基端基,第二次加入的碱
金属和/或碱
金属化合物的量等于或大于剩余的羟基端基。