Manufacture of modified cross-section acrylic fiber
专利汇可以提供Manufacture of modified cross-section acrylic fiber专利检索，专利查询，专利分析的服务。并且PURPOSE: To manufacture the titled fiber having high flatness and the feeling similar to animal hair in gloss, softness, waxiness, etc., by wet-spinning a dope having a specific viscosity and obtained by dissolving an acrylonitrile polymer in an inorganic solvent, using two coagulation baths, and subjecting the fiber to the wet heat drawing.
CONSTITUTION: An acrylonitrile polymer spinning dope having a viscosity of 40W200 poise at 30°C and obtained by dissolving an acrylonitrile polymer in an inorganic solvent (e.g. aqueous solution of sodium rhodanate) is subjected to the wet-spinning through a spinneret having circular nozzles, maintained in the first coagulation bath having a solvent concentration of 5W35wt% at -5W+5°C for d × 1/4Wd sec (d is denier of the single fiber obtained as the final product) and then in the second bath having a solvent concentration of 5W35wt% at 6W 40°C for ≥d sec. The spun fiber is washed with water, and drawn ≥4 times at ≥80°C under wet hot condition to obtain the objective fiber having a flatness of ≥1.5.
COPYRIGHT: (C)1984,JPO&Japio，下面是Manufacture of modified cross-section acrylic fiber专利的具体信息内容。
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