Title:
NOVEL MULTILAYERED DIAPHRAGM
Document Type and Number:
Japanese Patent JPS62247093
Kind Code:
A
Abstract:
PURPOSE:To enhance the safety of the titled diaphragm for electrolysis and to reduce the consumption of energy by supporting hydrophilic porous layers of a fluorine-contg. polymer on both sides of an ion exchange layer having a specified ion exchange capacity and by specifying the thickness of each of the layers. CONSTITUTION:Porous layers of a fluorine-contg. polymer having gas releasing layers on the surfaces and hydrophilic property in the pores are monolithically supported on both sides of an ion exchange layer of a dry resin having 0.5-2.0mm equiv./g ion exchange capacity to obtain a multilayered diaphragm. The diameter of the pores in the porous layer is 0.01-30mum and the Garley number is 1-1,000. The thickness of the ion exchange layer is 1-150mum, the total thickness of the porous layers is 30-450mum and the thickness of the resulting diaphragm is 31-600mum. The dry resin of the ion exchange layer may be one or more kinds of fluorine-contg. polymers each having sulfonic acid or carboxylic acid groups. Since the diaphragm has strengthened surfaces, the ion exchange layer can be made thin.
Inventors:
SUGAYA YOSHIO
YAMADA RYOJI
SAITO YOSHIHIKO
YAMADA RYOJI
SAITO YOSHIHIKO
Application Number:
JP8823086A
Publication Date:
October 28, 1987
Filing Date:
April 18, 1986
Export Citation:
Assignee:
ASAHI GLASS CO LTD
International Classes:
C25B13/08; C08J5/22; (IPC1-7): C25B13/08
Domestic Patent References:
| JPS57137490A | 1982-08-25 |
Attorney, Agent or Firm:
Akira Uchida