高分子量聚醚多元醇的研制

Synthesis of High Molecular Weight Polyols

在高压反应釜中，采用双金属催化剂，以丙三醇和环氧丙烷为原料，制备了高分子量聚氧化丙烯三醇，其不饱和度为０．０１０￣０．０１７ｍｏｌ／ｋｇ，结果表明，在该体系中，反应最佳条件为：反应温度（８５±５）℃，反应时间４￣６ｈ环氧丙烷与丙三醇投料质量比为１２０／１￣２００／１，催化剂质量分数为０．１２％￣０．１８％，加适量的溶剂有利于提高聚醚的分子量。

The high molecular weight(Mn≥8000)polyther polyols based on propylene oxide and glycerin were Prepared in the autoclave by use of double metal complex catalysts.The unsaturation of the poyols are 0.010~0.017 mol/kg.The optimal conditions of the reaction were (85±5)℃ for 4 ~ 6 hours;the appropriate mass ratio of propylene oxide to glycerin was 120/1 ~ 200/1;the amount of catalyst added should be 0. 12% ~ 0. 18% by weight of polyetherpolyols