Provided is a composite semipermeable membrane comprising a microporous support membrane and a separation functional layer formed thereon, wherein the separation functional layer is formed from Compound (A) in which a reactive group(s) having an ethylenically unsaturated group and a hydrolyzable group(s) are bonded directly to a silicon atom, Compound (B) having an ethylenically unsaturated group, the Compound (B) being different from said Compound (A), and Compound (C) having an ethylenically unsaturated group, the Compound (C) being different from said Compound (A) and (B), by condensation of hydrolyzable groups that the Compound (A) has and polymerization of ethylenically unsaturated groups that the Compound (A), the Compound (B), and the Compound (C) have, and the Compound (A), the Compound (B), and the Compound (C) satisfy the relationship of the following equation (I): QA-QC+QB-QC=QA-QB
(Qx represents an Alfrey-Price Q value of Compound X).
A composite semipermeable membrane having excellent chemical resistivity to chemicals represented by chlorine, separation performance, and water permeability can be provided.
提供了一种复合半透膜,包括微孔支撑膜和在其上形成的分离功能层,其中分离功能层由以下化合物形成:化合物(A),其中具有
乙烯不饱和基团的反应基团和可
水解基团直接键合到
硅原子上;化合物(B),具有
乙烯不饱和基团,所述化合物(B)不同于所述化合物(A);以及化合物(C),具有
乙烯不饱和基团,所述化合物(C)不同于所述化合物(A)和(B)、化合物(A)具有的可
水解基团和化合物(A)、化合物(B)和化合物(C)具有的
乙烯基不饱和基团的缩合,以及化合物(A)、化合物(B)和化合物(C)具有的
乙烯基不饱和基团的聚合,以及化合物(A)、化合物(B)和化合物(C)具有的
乙烯基不饱和基团的聚合,满足下式(I)的关系:QA-QC+QB-QC=QA-QB
(Qx 代表化合物 X 的 Alfrey-Price Q 值)。
可以提供一种复合半透膜,它对以
氯为代表的
化学物质具有极佳的耐
化学性、分离性能和透
水性。