反应详情

63.2 g of N-vinylpyrrolidone, 36.8 g of vinyl chloroacetate, 200 g of ethanol and 1 g of azobis-isobutyronitrile is placed in a reactor of 1000 ml capacity. The mixture is placed under a nitrogen blanket and is reflux-heated under constant stirring for 8 hours. The crude polymer solution is diluted in 200 g of acetone and precipitated in 5 l. of ethyl ether. After filtration and drying, a polymer is obtained which contains 37.5% of vinyl chloroacetate based on chlorine determination.

1. temperatureis reflux-heated
2. customprecipitated in 5 l
3. filtrationAfter filtration
4. customdrying
5. customa polymer is obtained which