The present invention has an object to provide a filter cartridge for purifying a chemical which can efficiently remove metal ions and impurities in the form of fine particles in a liquid to be filtered. The present invention provides, as the means to achieve the above described object, a filter cartridge comprising a fiber membrane material obtained by introducing ion exchange groups and/or chelate groups into an organic polymer fiber membrane base material having an average fiber diameter of 0.1 μm to 20 μm and an average pore size of 1 μm to 20 μm or a filter cartridge. And also present invention provides, as the means to achieve the above described object, comprising a bi-layered or laminated structure of filter membranes prepared from fiber membrane material obtained by introducing ion exchange groups and/or chelate groups into an organic polymer fiber membrane base material and a micro porous membrane material.
本发明旨在提供一种用于净化
化学品的过滤器滤芯,能够有效地去除液体中以细小颗粒形式存在的
金属离子和杂质。为了实现上述目的,本发明提供了一种过滤器滤芯,其包括将离子交换基团和/或螯合基团引入有平均纤维直径为0.1μm至20μm和平均孔径为1μm至20μm的有机聚合物纤维膜基材中所得的纤维膜材料。本发明还提供了一种实现上述目的的过滤器滤芯,其包括由将离子交换基团和/或螯合基团引入有机聚合物纤维膜基材中所得的纤维膜材料和微孔膜材料制备而成的双层或层压结构的过滤膜。