Реакция #568170

Уравнение реакции

ethylene glycol monoethyl ether

4-acetoxystyrene

→

propylene glycol monomethyl ether acetate

Условия реакции

Обработка

1. 1
   ДругоеTo remove low-molecular weight oligomers and residual monomers
2. 2
   Промывкаthis solution was washed several times with methanol/
3. 3
   workup.ADDITIONmixed in arbitrary rate
4. 4
   ПромывкаAfter washing

Методика

In a separable flask, 100 g of ethylene glycol monoethyl ether, 78.6 g of 4-acetoxystyrene, 21.4 g of 4-tert-butoxystyrene, and 3.7 g of dimethyl-2,2′-azobis(2-methylpropionate) as a polymerization initiator were charged and, after replacing the atmosphere in the separable flask with nitrogen, the reaction was conducted at 80° C. for 16 hours. To this reaction solution, 5 g of 25% tetramethylammonium hydroxide was added, followed by heating at 70° C. for 5 hours. To remove low-molecular weight oligomers and residual monomers, this solution was washed several times with methanol/deionized water mixed in arbitrary rate. After washing, the solvent in the solution was replaced with propylene glycol monomethyl ether acetate to obtain 400 g of a propylene glycol monomethyl ether acetate solution (solid content: 20%) of a 4-hydroxystyrene/4-tert-butoxystyrene polymer.

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