公开(公告)号：US20170216832A1

公开(公告)日：2017-08-03

申请号：US15328673

申请日：2015-07-16

Applicant: ASTOM CORPORATION

Inventor： Tomoaki TAKAHASHI ,  Hiroshi MIYAZAWA ,  Nobuyuki TANAKA ,  Nobuhiko OHMURA ,  Kazuo MIZUGUCHI ,  Kenji FUKUTA

IPC: B01J39/20 ,  B01J41/07 ,  B01J41/14 ,  B01J47/12 ,  C08J5/22 ,  B01D71/26 ,  B32B27/08 ,  B32B27/32 ,  B32B38/00 ,  B01D67/00 ,  B01D69/12 ,  B01D69/02 ,  B01J39/05 ,  B32B3/26

Abstract: An ion exchange membrane having a structure that an ion exchange resin is filled in spaces of a porous base film, the porous base film has a structure that at least two porous olefin resin layers are laminated with a bonding strength of 100 gf/cm or more to less than 700 gf/cm and a Gurley air permeance of 500 sec/100 ml or less in terms of a 100 μm thick film. In this ion exchange membrane, base film has high air permeability though it has a multi-layer structure that a plurality of porous resin films are bonded together, and therefore a rise in electric resistance caused by the lamination of the base sheets is effectively suppressed.