The purpose of the present invention is to provide a method for producing a composite semipermeable membrane, which has excellent chemical resistance, and in which floating of a skin layer is not easily generated. A method for producing a composite semipermeable membrane, of the present invention, characterized in that an atmospheric pressure plasma treatment is performed to a front surface on which a skin layer of an epoxy resin porous support is to be formed, thereafter the skin layer is formed own the front surface.
本发明的目的是提供一种生产复合半透膜的方法,这种膜具有优异的耐
化学性,而且不容易产生表皮层上浮。本发明的一种生产复合半透膜的方法,其特征在于:对环氧
树脂多孔支架的表皮层的正面进行常压等离子处理,然后在正面形成表皮层。