Astom Corporation

Kazuo Mizuguchi

Kazunori Nishio

Toshio Aritomi

Nobuhiko Ohmura

Kenji Fukuta

Nobuyuki Tanaka

Tomoaki Takahashi

Hiroshi Miyazawa

Minoru Kawashima

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 &#x3bc;m 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.

Ion exchange membrane and production process therefor

An ion-exchange membrane including a porous unstretched polyethylene sheet in which fine pores are piercing, the pores being filled with an ion-exchange resin. The ion-exchange membrane exhibits excellent concentration property.

Ion-exchange membrane

To provide a bipolar membrane featuring improved adhesion between an anion-exchange membrane and a cation-exchange membrane without accompanied by an increase in the membrane voltage. [Means for Solution] A bipolar membrane comprising a cation-exchange membrane and an anion-exchange membrane joined together facing each other, wherein at least one of the ion exchange membranes contains a chlorinated polyolefin.

Bipolar membrane and method of manufacturing the same

Growing community of inventors

Shunan, Japan

Kazuo Mizuguchi