Title:
PREPARATION OF POROUS HYDROPHILE MEMBRANE
Document Type and Number:
Japanese Patent JPH07773
Kind Code:
A
Abstract:
PURPOSE: To prepare a porous and hydrophilic membrane by treating a natural water-wet and hydrophilic membrane in a water solution consisting of a water- soluble polymer and an electrolyte and then vaporizing or evaporating the water which fills pores.
CONSTITUTION: A hydrophilic polymer, a polymer mixture, or polymer alloys are treated in a water solution consisting of a water-soluble polymer such as polyethylene glycol and an electrolyte such as halogen compounds. Then, a hydrophilic membrane is formed, and a porous membrane is obtained by heating this hydrophilic membrane at about 40-80°C and vaporizing or evaporating water which fills pores. A porous structure is maintained even in dry conditions.
Inventors:
RAINHARUTO BUAGENAA
YURUGEN SHIYUNAIDAA
YURUGEN BUIRUTOHARUTO
YOAHIMU KURAUSU
YURUGEN SHIYUNAIDAA
YURUGEN BUIRUTOHARUTO
YOAHIMU KURAUSU
Application Number:
JP33811093A
Publication Date:
January 06, 1995
Filing Date:
December 28, 1993
Export Citation:
Assignee:
HOECHST AG
International Classes:
B01D67/00; B01D71/12; B01D71/54; B01D71/56; B01D71/64; B01D71/68; (IPC1-7): B01D67/00
Attorney, Agent or Firm:
Kyozo Yuasa (5 people outside)
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