摘要
采用聚酯多元醇(JW2503),甲苯二异氰酸酯(TDI),二羟甲基丙酸(DMPA)为基本原料,用丙酮法合成了稳定的聚酯型阴离子水性聚氨酯乳液。探讨了反应温度、反应时间、溶剂、催化剂及用量对预聚反应的影响。实验结果表明,以丙酮为溶剂,催化剂二月桂酸二正丁基锡的用量为0.03％,反应温度65℃最为适宜,反应时间为2h。
In this paper, stable polyester anionic waterborne polyurethane emulsion was prepared with JW2503, TDI and DMPA by acetone process. Effects of reaction temperature, reaction time, solvent, catalyst and its amount on prepolymerization was studied. Results showed that the most proper reaction temperature is about 65℃ and the reaction time is 2h, when the prepolymerization reaction conducted in acetone solvent in the presence of dibutyltin dilaurate as the catalyst.
出处
《中国胶粘剂》
CAS
2005年第3期33-35,共3页
China Adhesives
关键词
聚酯
阴离子
水性聚氨酯
预聚反应
polyester
anionic
waterborne polyurethane
prepolymerization
