公开(公告)号：US20230265585A1

公开(公告)日：2023-08-24

申请号：US18003767

申请日：2021-06-25

申请人： AQUAPORIN A/S

发明人： Mehrdad MOHAMMADIFAKHR ,  Antoine KEMPERMAN ,  Joris de GROOTH ,  Krzysztof TRZASKUS

IPC分类号： D01D5/24 ,  D01D1/06 ,  B01D69/08 ,  B01D69/12 ,  B01D71/40 ,  B01D71/60 ,  B01D69/14

CPC分类号： D01D5/24 ,  D01D1/065 ,  B01D69/087 ,  B01D69/125 ,  B01D71/40 ,  B01D71/601 ,  B01D69/14111 ,  B01D2325/34 ,  B01D2323/06 ,  B01D2323/21839 ,  B01D2323/50 ,  D10B2331/02

摘要： A process for preparing a hollow fiber includes the steps of providing a dope solution including polyamide imide (PAI), providing an aqueous bore solution including polyethylene imine (PEI), extruding the dope solution in an cross-sectional annular shape and ejecting the bore solution in the center of the annular shape, allowing the PAI and the PEI to react, thereby forming an internal surface layer including the cross-linked reaction product, and forming a polyamide Thin Film Composite (TFC) layer by interfacial reaction of aqueous di- or triamine compound and organic di- or triacylhalide compound on the internal surface layer including the cross-linked reaction product.