反应详情

Into a 500 ml-volume three-neck flask, 72.1 g of poly-4-hydroxystyrene (VP-8000, produced by Nippon Soda Co., Ltd.), 16.4 g of ethyl vinyl ether and 300 ml of ethyl acetate were charged. A catalytic amount of para-toluenesulfonic acid was added, and reaction was allowed to proceed at room temperature for 3 hours in a nitrogen stream. After adding a small amount of triethylamine, the solution was washed with pure water. Propylene glycol monomethyl ether acetate was added to the ethyl acetate layer, and ethyl acetate was removed by distillation under reduced pressure to obtain Polymer A′-11 (p-1-ethoxyethoxystyrene/p-hydroxystyrene) as a propylene glycol monomethyl ether acetate solution.

1. customreaction
2. washthe solution was washed with pure water
3. additionPropylene glycol monomethyl ether acetate was added to the ethyl acetate layer, and ethyl acetate
4. customwas removed by distillation under reduced pressure