反应详情

温度

20 °C

p-Hydroxystyrene (70 g) (VP-8000, manufactured by Nippon Soda Co., Ltd.) was dissolved in 320 g of propylene glycol monomethyl ether acetate (PGMEA) by heating, after dehydration by distillation under reduced pressure, the solution was cooled to 20° C. To the solution were added 0.35 g of pyridinium p-toluenesulfonate and 22.4 g of cyclohexane ethanol. t-Butyl vinyl ether (17.5 g) was gradually added to the solution to perform reaction at 20° C. for 5 hours. To the reaction solution were added 0.28 g of triethylamine and 320 ml of ethyl acetate, and the reaction solution was washed with 150 ml of distilled water three times. The solvent was distilled off and the solution was concentrated. The thus-obtained oil was dissolved in 100 ml of acetone, and the solution was gradually poured into 2 liters of distilled water. The precipitated powder was filtered and dried, thereby 54 g of resin A-25 was obtained.

1. temperatureby heating
2. distillationafter dehydration by distillation under reduced pressure
3. additionTo the solution were added 0.35 g of pyridinium p-toluenesulfonate and 22.4 g of cyclohexane ethanol
4. additiont-Butyl vinyl ether (17.5 g) was gradually added to the solution
5. customreaction at 20° C. for 5 hours
6. washthe reaction solution was washed with 150 ml of distilled water three times
7. distillationThe solvent was distilled off
8. concentrationthe solution was concentrated
9. dissolutionThe thus-obtained oil was dissolved in 100 ml of acetone
10. additionthe solution was gradually poured into 2 liters of distilled water
11. filtrationThe precipitated powder was filtered
12. customdried