Title:
MANUFACTURING METHOD OF SEPARATION MEMBRANE INCLUDING FREEZING PROCESS
Document Type and Number:
Japanese Patent JP2009202135
Kind Code:
A
Abstract:
To provide a control method of the fractionation performance of a separation membrane with no denaturing risk caused by a treatment agent or heat.
The manufacturing method of the separation membrane by dissolving a polymer and using it as a doping raw liquid, solidifying it to obtaining a film-like matter and washing it, includes a process of freezing the film-like matter in a wet state after washing, then thawing it.
Inventors:
SHIMOYAMA SHIRO
TANAHASHI KAZUHIRO
TANAHASHI KAZUHIRO
Application Number:
JP2008049440A
Publication Date:
September 10, 2009
Filing Date:
February 29, 2008
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B01D67/00