Melt-spun acrylonitrile polymer fiber with improved dye...

Details Melt-spun acrylonitrile polymer fiber with improved dye... Melt-spun acrylonitrile polymer fiber with improved dye...

D - Textiles, Paper

01

F

18/617

D01F 6/18 (2006.01) D01F 6/38 (2006.01)

Patent

CA 1119764

26,826 TITLE: MELT-SPUN ACRYLONITRILE POLYMER FIBER OF IMPROVED PROPERTIES AND PROCESS THEREFOR ABSTRACT OF THE DISCLOSURE Spinning of a melt of water and an acrylonitrile polymer containing hydrophilic moieties through a spinnerette into a steam-pressurized solidification zone results in a fiber of improved dye intensity and reduced shade change due to hot-wet processing. When the amount of water in the melt is in the lower half of the range necessary to provide the melt under the conditions of extrusion, the amount of hydrophilic moieties contained in the polymer are sufficient to control the rate of release of water from the extrudate, the steam conditions in the solidification are sufficient to prevent formation of a separate water phase, and drying of the resulting extrudate under conditions of temperature and humidity to remove water therefrom while avoiding forma- tion of a separate water phase.

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