反应详情

Into the same flask as in Production Example 1, 993 g of tri- and tetra-acrylate of pentaerythritol [ARONIX M-305 produced by To a Gosei Co., Ltd.; hereinafter referred to as “M-305”] (containing 2 mol of triacrylate), 0.61 g of BHT and 0.36 g of DBTL are prepared, and is stirred at a liquid temperature of 70 to 75° C., while 222 g (1.0 mol) of IPDI is dropped into the flask.

1. customare prepared
2. additionis dropped into the flask