反应详情

Using 9.5 g of poly(p-hydroxystyrene/p-tetrahydropyranyloxystyrene) obtained according to (3) above and 2.7 g of ethylvinyl ether, reaction and after-treatments were carried out according to (3) of Preparation Example 3, and the produced crystals were filtered out, washed with water and dried in vacuo to give 9.9 g of poly(p-1-ethoxyethoxystyrene/p-hydroxystyrene/p-tetrahydropyranyloxystyrene) as white powdery crystal. P-1-ethoxyethoxystyrene unit/p-hydroxystyrene unit/p-tetrahydropyranyloxystyrene unit molar ratio in the polymer≈35:60:5 (1H NMR). Mw≈16,000; Mw/Mn=1.78 (GPC with polystyrene calibration).

1. customobtained
2. filtrationthe produced crystals were filtered out
3. washwashed with water
4. customdried in vacuo