4-Methoxyphenol → Urethane acrylate

Participants

Reaction Conditions

Reaction Steps

To a reactor, 0.73 g of dibutyltin dilaurate, 0.64 g of 4-methoxyphenol, and 222.0 g of isophorone diisocyanate were charged. The mixture was stirred and air sparge was applied while stirring. 116.0 g of hydroxyethyl acrylate was added slowly to the stirring mixture. The mixture was stirred at 60° C. for 4 hours, then 266.0 g of the reaction product of tetrahydrophthalic anhydride and a mixture of ethylene and propylene glycols, available commercially from Great Lakes Chemical Company as “PHT4-diol,”was added and the temperature was increased to 95° C. The reaction was kept at 95° C. for 4 hours before discharge. The viscous liquid become solids upon cooling to room temperature.

Provenance & Evidence