摘要
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
出处
《聚氨酯工业》
1999年第1期22-25,共4页
Polyurethane Industry
关键词
聚醚多元醇
高分子量
聚氨酯
原料
Polyether polyol High molecular weight Propylene oxide Glycein Lower unsaturation