Carbamic acid, ethyl ester → Urethane acrylate

Participants

Reaction Conditions

Reaction Steps

Subsequently, in order to prevent the thermal polymerization of vinyl groups, a reactor was cooled to a temperature of about 50° C., and then 0.657 mol of hydroxyethyl acrylate was added to the urethane prepolymer and then stirred for 4˜6 hours until isocyanate groups were completely consumed. The fact that residual isocyanate does not exist according to the characteristic peak of N═C═O near a frequency of 2270 cm−1 using Fourier transfer infrared spectroscopy (FT-IR) was confirmed, and then the reaction was terminated to obtain a urethane acrylate oligomer.

Provenance & Evidence