4-Methoxyphenol → Isophorone diisocyanate

Participants

Reaction Steps

Into a 3-liter separable flask were put 2248 parts (2 mol) of dipentaerythritol acrylate (manufactured by Nippon Kayaku, trade name: KAYARAD DPHA), 222 parts (1 mol) of isophorone diisocyanate and 0.49 parts of hydroquinone monomethyl ether. With stirring, air was introduced into the liquid through a glass tube, and the liquid temperature was made to be 70° C. Thereto was added 0.49 parts of dibutyltin dilaurate and while the reaction temperature was adjusted to be between 70 and 80° C., reaction was performed for 6 hours to give a urethane acrylate of isophorone diisocyanate and dipentaerythritol acrylate.

Provenance & Evidence