Title:
METHOD FOR PRODUCING SEMIPERMEABLE MEMBRANE AND DIALYZER USING THE SEMIPERMEABLE MEMBRANE
Document Type and Number:
Japanese Patent JP3770145
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a simple method for improving water permeability of a semipermeable membrane composed of a polysulfone resin without changing spinning conditions nor the concentration of the polysulfone resin.
SOLUTION: The method for producing a semipermeable membrane uses a film-forming stock solution containing two or more kinds of polysulfone resins having different weight-average molecular weights, a hydrophilic polymer and a solvent, in which contents of the polysulfone resins having the smallest weight-average molecular weight is 10 to 70 wt.% in the total amount.
Inventors:
Shigehisa Wada
Hidetoshi Ozawa
Hidekazu Nakajima
Hidetoshi Ozawa
Hidekazu Nakajima
Application Number:
JP2001325059A
Publication Date:
April 26, 2006
Filing Date:
October 23, 2001
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
A61M1/18; B01D71/68; B01D71/44; C08J5/18; C08L39/06; C08L81/06; D01F6/76; (IPC1-7): B01D71/68; A61M1/18; B01D71/44; C08J5/18; C08L39/06; C08L81/06; //D01F6/76
Domestic Patent References:
| JP6165924A | ||||
| JP9220454A | ||||
| JP2000300663A | ||||
| JP2000334281A |
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