| 摘要 |
PURPOSE:Polyethylene terephthalate copolymerized with a metal sulfonate group- containing component, isophthalic acid and 1,2-bis(4-carbophenoxy)ethane is subjected to high-speed spinning to produce the titled fiber with high resistance to alkalic hydrolysis. CONSTITUTION:A polyester which is mainly composed of ethylene terephthalate units and contains (A) an ester-forming component with metal sulfonate group (e.g., 5-sodiosulfoisophthalic acid), (B) isophthalic acid component and (C) 1,2-bis(4-carbophenoxy)ethane where the molars amounts of individual components satisfy equations I-III is melt-extruded through the spinneret, the heating chimney, the finishing nozzle guide and wound up at a speed over 5,000/min to give the objective fiber. |
