PROBLEM TO BE SOLVED: To provide a manufacturing method for hollow fiber membrane for blood purification capable of effectively producing antioxidant effect of vitamin added to spinning dope.SOLUTION: In the manufacturing method for the hollow fiber membrane for blood purification including a process in which after simultaneously discharging the spinning dope and core liquid from an outside annular part and a main hole of a double pipe nozzle, they are made to pass through the coagulability fluid, to be solidified and cleaned, the spinning dope is made to contain 0.05-1.2 mass% of lipid soluble vitamin, preferably vitamin E and also contain 0.004-0.045 mass% of citric acid.COPYRIGHT: (C)2013,JPO&INPIT【課題】紡糸原液に添加されるビタミンの抗酸化作用が有効に発揮できる血液浄化用中空糸膜の製造方法を提供する。【解決手段】二重管ノズルの外側環状部と中心孔から紡糸原液と芯液をそれぞれ同時に吐出した後、凝固性液体中を通過させて凝固させ、洗浄する工程を含む血液浄化用中空糸膜の製造方法において、前記紡糸原液に脂溶性ビタミン、好ましくはビタミンEを0.05~1.2質量%含有させ、さらにクエン酸を0.004~0.045質量%含有させることを特徴とする。【選択図】図1
