Research Article
Reactions of N,N′-bis(2-hydroxyethyl)oxalamide with Ethylene Carbonate and Use of the Obtained Products as Components of Polyurethanes Foams
Figure 1
1H-NMR spectrum of the reaction product of BHEOA : EC 1 : 2 in the presence of 0.06 mole K2CO3/mole OA at C.