文献类型：期刊文献

英文题名：Synthesis of HDI/IPDI hybrid isocyanurate and its application in polyurethane coating

作者：Wang, Guiyou[1];Li, Kang[1];Zou, Wei[1];Hu, Aiguo[1];Hu, Chunpu[1];Zhu, Yangping[2];Chen, Chen[2];Guo, Glynn[2];Yang, Aaron[2];Drumright, Ray[3];Argyropoulos, John[3]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]Dow Chem Co Ltd, Shanghai 201203, Peoples R China;[3]Dow Chem Co USA, Midland, MI 48674 USA

年份：2015

卷号：78

起止页码：225

外文期刊名：PROGRESS IN ORGANIC COATINGS

收录：;EI(收录号：20145200363936);WOS:【SCI-EXPANDED(收录号:WOS:000347754000028)】；

基金：This research was supported by Dow Chemical Company Limited. The authors wish to thank Prof. Zhiping Zhang for his assistance.

语种：英文

外文关键词：Isophorone diisocyanate; Hexamethylene diisocyanate; Coating; Hybrid isocyanurate; Polyurethane; Structure

摘要：A solvent-free hybrid isocyanurate was prepared by trimerization of hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI), and characterized by gel permeation chromatography (GPC), gas chromatography (GC), nuclear magnetic resonance (NMR), and electrospray ionization mass spectrometry (ESI-MS). The results showed that HDI/IPDI hybrid isocyanurate could be prepared in the presence of 2-hydroxypropyl-trimethyl-azanium catalyst at reaction temperatures between 50 degrees C and 70 degrees C. Both the GC and H-1 NMR analyses identified the favorable linear relationship between the feed ratio of the starting monomers and the amount of each individual isocyanate incorporated into the oligomer (reaction ratio). The polyurethane coatings prepared with HDI/IPDI hybrid isocyanurates demonstrated faster drying speed, higher hardness and gloss and better distinctness-of-image (DOI) than the analogous coatings prepared with cold-blends of HDI isocyanurate and IPDI isocyanurate. (C) 2014 Elsevier B.V. All rights reserved.