SILK-LIKE ANTISTATIC POLYESTER AND PRODUCTION THEREOF

摘要

PURPOSE:To obtain the title polyester fiber by each using an aromatic polyester containing specific two components as a core component and an aromatic polyester containing a specific metal salt as a sheath component and subjecting the both components to conjugate spinning and then subjecting the spun yarn to alkali reduction treatment. CONSTITUTION:A core-sheath conjugate fiber obtained by each using an aromatic polyester containing 1-10wt.% polyoxyethylene based polymer expressed by formula I (Z is residue of an organic compound having 1-6 active hydrogens and <=300 molecular weight; R<1> is >=6C alkylene; R<2> is H or 1-40C monovalent hydrocarbon, etc.; k is 1-6; kXl is >=70; m is >=1) and having 5000-16000 molecular weight and 0.1-5wt.% organic metal salt as a core component and using an aromatic polyester containing 0.1-10wt.% organic sulfonic acid salt expressed by formula II (R is 3-30C alkyl, etc.; M is alkali metal) as a sheath component and subjecting the both components to conjugate spinning is subjected to alkali reduction treatment so that area conjugate ratio of core/sheath may be 5/95-50/50 to provide the silk-like antistatic polyester fiber having a stripe-like space oriented in axial direction of fiber and formed in the sheath part.