Title:
POROUS SULFONIC POLYMER FILM AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPS56152706
Kind Code:
A
Abstract:
Sulfone polymer ultrafiltration membranes with remarkably high permeability to solvent at low pressure combined with excellent retention of low molecular weight macro-molecules and sharp molecular weight cutoff are prepared by casting a sheet of said polymer dissolved in a specified solvent (hexamethylphosphoramide) evaporating a portion of the solvent from the sheet and immersing said sheet in a gelation liquid therefore.
Inventors:
UIRIAMU DONARUDO BENJINGAA
JIYOOJI MOORARII HAINDO
MAAGARETSUTO GABIN TOORU
JIYOOJI MOORARII HAINDO
MAAGARETSUTO GABIN TOORU
Application Number:
JP4181581A
Publication Date:
November 26, 1981
Filing Date:
March 24, 1981
Export Citation:
Assignee:
PENNWALT CORP
International Classes:
C08G75/00; B01D71/68; C08J3/09; C08J9/28; C08L81/06; (IPC1-7): B01D13/00; C08G75/20; C08J9/28