Phenyl isocyanate → Carbamate

Participants

Reaction Steps

100 g of phenoxy resin (YP-50, hydroxyl group equivalent=284, Toto Kasei Inc., trade name) and 330 g of cyclohexanone were introduced into a 1 L separable flask fitted with a reflux condenser, thermometer and stirrer, and the mixture heated with stirring to dissolve the resin. Subsequently, 41.9 g phenyl isocyanate and 0.3 g triethylamine were added, and reacted at 130° C. for 3 hours. Next, the product was reprecipitated in ethanol, and dried to give a phenoxy resin to which carbamate had been added. This resin was then dissolved in dimethylformamide (DMF) to give a concentration of 30 mass %, and the resin primer of Example 4 was thus obtained.

Provenance & Evidence