Abstract
Concentrated dimethyl formamide solution of acrylonitrile ploymer were treated at 50, 80, 100 and 120°C under an atmospheric pressure, 10, 30 and 50(kg/cm2.) gauge in an autoclave and the viscosity of the solution was measured at 50°C.
The results obtained are as follows:
1) The viscosity of the solution treated at 50, 80 and 100°C under high pressure do not show any considerable change.
2) The solution treated at 120°C under high pressure has lower viscosity than the solution treated under an atmospheric pressure.
