Reverse osmosis membrane exceptionally resistant to contamination and method of production

摘要

A reverse osmosis membrane, comprising: a porous support; an active layer of polyamide formed on the porous support; and a coating layer that includes a copolymer that includes an amphoteric ionic compound and glycidyl (meth) acrylate in an equivalent ratio of 0.01 to 7: 0.05 to 3, the coating layer forms a chemical bond with the layer active polyamide, wherein the amphoteric ionic compound is a compound represented by the following Chemical Formula 1 or a compound represented by the following Chemical Formula 2. ** Formula ** in Chemical Formulas 1 and 2, R1 represents H or a group C1-10 alkyl, R2 represents O, NH, S or PH, each of R3, R4, R5, R6 and R7 independently represents hydrogen or a C1-5 alkyl group, n1 represents an integer from 1 to 8, and n2 represents an integer from 1 to 4.