COMPOSITE SEMIPERMEABLE MEMBRANE AND PRODUCTION METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a composite semipermeable membrane having high separation performance, high durability to an oxidizer and high stability in continuous water flowing operation and to provide a production method of the same.SOLUTION: In a composite semipermeable membrane,: a separation functional layer is formed on a fine porous support membrane; the separation functional layer is made of a mixture including a compound (A) where a reactive group having an ethylenic unsaturated group and a hydrolyzable group are connected to a silicon atom, a compound (B) other than a silicon compound having the reactive group having the ethylenic unsaturated group and an organic metal compound (C) as raw materials; and the composite semipermeable membrane is formed by the polymerization of the ethylenic unsaturated groups possessed in the compound (A) and the compound (B) and the covalent bonding of the hydrolyzable group possessed in the compound (A) and the organic metal compound (C).