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Preparation of Waterborne Polyurethane by DMPA Amination Process
Release time:
2019-09-20
Authors: Li Qingxi, Kong Xia, Zhu Yanan, Qu Quanqing (School of Chemistry and Chemical Engineering, South China University of Technology, Gabriel Chemical Group Co., Ltd.)
The aqueous polyurethane dispersion (PUD) without N-methylpyrrolidone (NMP) and organotin was successfully prepared by aminating dimethylol propionic acid (DMPA) as a hydrophilic chain extender. The effects of amination process on the preparation process and dairy performance of PUD were studied, and the structure and performance of the film were characterized. The results show that:
(1). The use of DMPA amination process can avoid the use of NMP and organotin catalysts to prepare organotin-free, NMP-free waterborne polyurethane dispersions;
(2). The performance of waterborne polyurethane film prepared by amination, especially the water resistance and other chemicals resistance, is better than that of PUD catalyzed by organotin;
(3). The process is simple and has the advantage of environmental friendliness.
(Source "2012 Waterborne Polyurethane Industry Annual Conference Proceedings")
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