文献类型：期刊文献

英文题名：Effect of urea groups on reaction kinetics of polyurethane formation

作者：Luo, N; Wang, DN; Ying, SK

机构：[1]E CHINA UNIV SCI & TECHNOL,INST MAT SCI & ENGN,SHANGHAI 200237,PEOPLES R CHINA

年份：1996

卷号：61

期号：2

起止页码：367

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1996UR69700020)】；

语种：英文

摘要：Urea-containing polyurethane reaction systems, based on ethylene oxide-capped poly(propylene oxide) polyether diol, 1,4-butyldiol, uretonimine liquefied 4,4'-diphenylmethane diisocyanate, and a biurea compound, were used to investigate the effect of urea groups on polyurethane bulk polymerization by using Fourier transform infrared spectroscopy. The biurea compound was a liquid biurea-capped poly(propylene oxide) polyether, which can mix well with the polyurethane systems. Catalysis of urea groups was observed clearly regardless of whether organotin catalyst was used. A catalytic mechanism was presented in this paper. (C) 1996 John Wiley & Sons, Inc.