Extrusion of polyacrylonitrile into pressurized zone with...

Details Extrusion of polyacrylonitrile into pressurized zone with... Extrusion of polyacrylonitrile into pressurized zone with...

D - Textiles, Paper

01

F

18/617

D01F 6/18 (2006.01) D01D 5/08 (2006.01)

Patent

CA 1052064

A B S T R A C T A single phase fusion melt of acrylonitrile polymer and water is melt-spun into a pressurized solidification zone wherein certain temperature, pressure, and composition conditions obtain. After spin-drawing the nascent extrudate in the solidification zone, it may be relaxed in a free-to- shrink condition. In a preferred embodiment, the nascent fiber is dried at elevated temperature before it is cooled or before it loses water upon cooling.

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