The preparation of hybrid trimer by cyclo-oligomerization of TDI and HDI and its curing process with polyols to form elastic PU coating
作者: Qian WangHang XuShengZhong ZhouSébastien GarnierStefan FüldnerLin YeZengguo Feng
作者单位: 1Beijing Institute of Technology
2BASF Advanced Chemicals Co., Ltd
刊名: Journal of Coatings Technology and Research, 2017, Vol.14 (6), pp.1279-1288
来源数据库: Springer Journal
DOI: 10.1007/s11998-017-9926-5
关键词: Toluene diisocyanate (TDI)Hexamethylene diisocyanate (HDI)OligomerizationPolyurethane (PU)Curing
英文摘要: The hybrid cyclic isocyanate trimer with appropriate functionality and good solvent tolerance which can be used as a building block to construct polyurethane (PU) coatings was prepared by cyclo-oligomerization of toluene diisocyanate (TDI) and hexamethylene diisocyanate (HDI). Among all the tested catalysts, the self-made catalyst 3-(trimethylammonio)propyl carbonate (Cat. 4) was found to possess enough catalytic efficiency to confirm the NCO conversion to reach about 50% with both high (1 wt%) and low (0.25 wt%) catalyst loading at low temperature (40°C). The IR and NMR results proved the formation of a hybrid trimer, while HPLC results showed hybrid TDI/HDI trimer predominated in the product and only trace amounts of TDI monomer (<0.5 wt%) and oligomer with higher degree of...
原始语种摘要: The hybrid cyclic isocyanate trimer with appropriate functionality and good solvent tolerance which can be used as a building block to construct polyurethane (PU) coatings was prepared by cyclo-oligomerization of toluene diisocyanate (TDI) and hexamethylene diisocyanate (HDI). Among all the tested catalysts, the self-made catalyst 3-(trimethylammonio)propyl carbonate (Cat. 4) was found to possess enough catalytic efficiency to confirm the NCO conversion to reach about 50% with both high (1 wt%) and low (0.25 wt%) catalyst loading at low temperature (40°C). The IR and NMR results proved the formation of a hybrid trimer, while HPLC results showed hybrid TDI/HDI trimer predominated in the product and only trace amounts of TDI monomer (<0.5 wt%) and oligomer with higher degree of...
全文获取路径: Springer  (合作)
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影响因子:1.094 (2012)

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关键词翻译
关键词翻译
  • trimer 三聚物
  • diisocyanate 二异氰酸盐
  • oligomer 低聚物
  • cyclo 表示圆的
  • coating 覆盖层
  • curing 硫化
  • catalyst 催化剂
  • hybrid 杂种
  • catalytic 催化的
  • preparation 预备