Research Article
1-Butyl-3-methylimidazolium Salts as New Catalysts to Produce Epoxy-anhydride Polymers with Improved Properties
Figure 5
FTIR-spectrum of reaction mixture “1-butyl-3-methylimidazolium bromide-PDI-3AK”: (1) initial mixture; (2) kept for 5 h at 100°C.