| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite semi-permeable membrane superior in an anti-oxidizing property to that of the prior art, and a method for manufacturing the same.SOLUTION: A method for manufacturing a composite semi-permeable membrane comprises a step of causing an amine solution containing polyfunctional amine components and an organic solution containing polyfunctional acid halide components to contact on a porous support thereby to form a skin layer containing a polyamide resin on the surface of a porous support. The manufacturing method is characterized in that said polyfunctional amine component contains N, N'-dimethyl meta-phenylenediamine, and in that the solvent of said organic solution is an organic solvent having a boiling point of 130 to 250°C. |
