New Hydrophilic PU Resin via A Non-isocyanate Process

• Main Authors: Jing-Zhong Hwang, 黃景忠
• Other Authors: Kan-Nan Chen
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/14288704962012452255

博士 === 淡江大學 === 化學學系博士班 === 101 === 　　In this research,　a new UV-curable hydrophilic PU resin was obtained through a green, nonisocyanate, three-reaction process: (1) cyclic carbonate (BCC or PPG-DCE) compounds are prepared by inserting carbon dioxide into epoxy resins (DGEBA or PPG-DGE) at atmospheric pressure; (2) amino-terminated hydrophilic PUs (NH2-PU) prepolymer are obtained through the ring-opening polymerization of BCC and PPG-DCE utilizing di-functional or tri-functional amino hydrophilic (polyether) compounds such as Jeffamine D-2000 or T-3000; (3) UV-curable acrylate-PU oligomer (UV-PU) are obtained as adducts from the Michael addition of NH2-PU to multi-acrylate-terminated compounds, 3-acryloyloxy-2-hydroxypropyl methacrylate (AHM). We used as ethyl lactate (EL) as a green solvent and a recyclable catalyst as lithium bromide. This is an energy saving and environmental friendly green process toward PU formation. 　　In this research, UV-PU films are compared to the difference of their properties. Finally all the data of each resulted polyurethane resins with different formulations are evaluated and discussed in this report.