反应详情

温度

52.5 °C

A 3-neck, round bottom flask equipped with a mechanical stirrer, means for maintaining an inert atmosphere, and a thermometer is charged with 395 ml. of distilled water, 22.2 g. (0.2 mol) of N-vinyl pyrrolidone, and 3.10 g. (0.022 mol) of glycidyl methacrylate. The flask is flushed with nitrogen, and the contents are maintained under nitrogen during the course of the reaction. The mixture is stirred, the temperature raised to 50-55° C. and maintained at this temperature, and 0.2 g. of 4,4'-azobiscyanopentanoic acid is added as polymerization catalyst. As solid material separates from solution during the reaction, acetone (totaling 125 ml.) is added to maintain it in solution. Agitation and heating is maintained for a total of about three hours. At the end of this time the mixture is cooled, and the colorless, syrupy solution is filtered to remove a small amount of insoluble material. The solution obtained contains about 5 percent copolymer. It may be used as such or the polymer may be isolated by spray or drum drying.

1. customA 3-neck, round bottom flask equipped with a mechanical stirrer
2. temperaturefor maintaining an inert atmosphere
3. additiona thermometer is charged with 395 ml
4. customThe flask is flushed with nitrogen
5. temperaturethe contents are maintained under nitrogen during the course of the reaction
6. temperaturemaintained at this temperature, and 0.2 g
7. additionof 4,4'-azobiscyanopentanoic acid is added as polymerization catalyst
8. customAs solid material separates from solution during the reaction, acetone (totaling 125 ml.)
9. additionis added
10. temperatureto maintain it in solution
11. temperatureAgitation and heating
12. temperatureis maintained for a total of about three hours
13. temperatureAt the end of this time the mixture is cooled
14. filtrationthe colorless, syrupy solution is filtered
15. customto remove a small amount of insoluble material
16. customThe solution obtained
17. custommay be isolated by spray or drum
18. customdrying