| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cation exchange membrane usable for salt manufacture, improved in concentrating performance compared with the conventionally used membrane without increasing electric resistance. <P>SOLUTION: The cation exchange membrane for salt manufacture, comprising a polyolefin porous substrate whose pores are filled with a copolymer having a sulfonic group, is obtained by filling the pores of the porous substrate comprising the polyolefin with a polymerizable mixture comprising styrene having a sulfonic group-introducible functional group and divinylbenzene, and then performing thermal polymerization. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
