摘要
研究了由丁二酸酐和二乙醇胺为起始原料合成超支化聚合物的方法 ;采用分步反应合成出了几种聚氨酯类超支化聚合物 ,考察了反应时间、带水剂、封端剂及其配比对反应结果的影响。试验结果表明 ,第 1步反应时间为 3h ,第 2步缩和脱水反应时间为 8h(甲苯为带水剂 ) ,第 3步用脱水剂封端脱水为 4 8h ;甲苯为较好的带水剂 ;带水剂、封端剂及其配比对产品粘度、溶解性、颜色等影响不大 ;产物的比浓对数粘度在 0 .0 2dL/
It was studied that the synthesis process of hyperbranched polymers from succinic anhydride and diethanolanmine. Several polymers of polyurethane were synthesized using synthesis method of several steps. The effects of time-reaction, water-taking agent , capping agent and their ratio on reaction were investigated. The results showed that it took 3 h for the first step, 8 h for the second step (condensating-dehydrating toluene as water-taking agent) and 48h for the third step (capping-dehydrating using dehydrating agent). Toluene was suitable water-taking agent. Water-taking agent, capping agent and their ratio didn't largely affect the viscosity, solubility and colourity of product. And the inherent viscosity of product was about 0.02 dL/g.
出处
《辽宁化工》
CAS
2003年第11期492-495,共4页
Liaoning Chemical Industry
关键词
超支化聚合物
聚氨酯
合成
丁二酸酐
二乙醇胺
Succinic anhydric
Diethanolamine
Hyperbranched polymers
Capping agent
