Filter for water treatment filtering and method for producing the same

摘要

The problem to be solved by the present invention is to provide a filter medium for a water treatment filter having contradictory characteristics, that is, hydrophilicity and chemical resistance, and a long life, and to provide the production method thereof. A filter medium for a water treatment filter according to the present invention is characterized in comprising a porous base material having a hydrophilic coating layer; wherein the hydrophilic coating layer has a cross-linked hydrophilic polymer and a high electron density part; a hydrophilic polymer in the cross-linked hydrophilic polymer is cross-linked with an aliphatic saturated hydrocarbon group which may contain one or more functional groups selected from a group consisting of an ether group, a hydroxy group and an amino group; the high electron density part has π electrons; and the high electron density part is covalently bonded to the cross-linked hydrophilic polymer.

主权项

1. A filter medium for a water treatment filter, comprising
a) porous base material, wherein the porous base material has no π electrons; and b) a hydrophilic coating layer, wherein the porous base material is coated with the hydrophilic coating layer; and wherein the hydrophilic coating layer comprises
1) a cross-linked hydrophilic polymer comprising:
i) hydrophilic polymer having a main chain, wherein the main chain of the hydrophilic polymer has no π electrons; andii) a cross-linked chain formed by cross-linking the hydrophilic polymer with an aliphatic saturated hydrocarbon group containing one or more functional groups selected from a group consisting of an ether group, a hydroxy group and an amino group, and wherein the cross-linked chain has no π electrons; and2) a high electron density part having π electrons; and the high electron density part is covalently bonded to the cross-linked hydrophilic polymer.