JPS5499083A - Production of semipermeable membrane - Google Patents

Production of semipermeable membrane

Info

Publication number
JPS5499083A
JPS5499083A JP541978A JP541978A JPS5499083A JP S5499083 A JPS5499083 A JP S5499083A JP 541978 A JP541978 A JP 541978A JP 541978 A JP541978 A JP 541978A JP S5499083 A JPS5499083 A JP S5499083A
Authority
JP
Japan
Prior art keywords
membrane
sulfuric acid
semipermeable membrane
soln
low molecular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP541978A
Other languages
Japanese (ja)
Inventor
Takezo Sano
Takatoshi Shimomura
Kazumoto Murase
Manabu Hirakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP541978A priority Critical patent/JPS5499083A/en
Priority to NL7812340A priority patent/NL7812340A/en
Priority to US05/973,633 priority patent/US4265959A/en
Priority to IT7852456A priority patent/IT1111100B/en
Priority to DK582378A priority patent/DK582378A/en
Priority to DE19782856136 priority patent/DE2856136A1/en
Priority to FR7836431A priority patent/FR2413108A1/en
Priority to GB7850090A priority patent/GB2011828B/en
Publication of JPS5499083A publication Critical patent/JPS5499083A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To produce a semipermeable membrane with superior water permeability and low molecular substance removing capacity by plasma treating a porous membrane made of AN type polymer contg. a specific amt. of acrylonitrile, follwed by sulfonation.
CONSTITUTION: An AN type polymer with MW of 5000W5000000 contg. 40W100 mol% of AN is dissolved in a suitable solvent such as DMF to form a 5W30 wt% soln., and a porous membrane is produced from this soln. by casting consisting of evaporation and gelling processes. This membrane is dried, plasma treated in a vacuum vessel housing a pair of electrodes under an inert gas atmosphere, and sulfonated by contact with sulfuric acid anhydride in gaseous sulfuric acid anhydride optionally mixed with gas such as air, N2 or He inert to sulfuric acid. Thus, 0.01W5 wt% of S is introduced into the membrane. The resulting semipermeable membrane has very superior water permeability and low molecular substance removing capacity.
COPYRIGHT: (C)1979,JPO&Japio
JP541978A 1977-01-12 1978-01-21 Production of semipermeable membrane Pending JPS5499083A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP541978A JPS5499083A (en) 1978-01-21 1978-01-21 Production of semipermeable membrane
NL7812340A NL7812340A (en) 1977-12-28 1978-12-20 SEMIPERMEABEL MEMBRANE AND METHOD FOR MANUFACTURING IT.
US05/973,633 US4265959A (en) 1977-01-12 1978-12-27 Process for producing semipermeable membranes
IT7852456A IT1111100B (en) 1977-12-28 1978-12-27 PROCEDURE FOR THE PRODUCTION OF SEMI-PERMEABLE MEMBRANES
DK582378A DK582378A (en) 1977-12-28 1978-12-27 SIMIPERMEABLE MEMBRANES AND THEIR MANUFACTURE AND USE
DE19782856136 DE2856136A1 (en) 1977-12-28 1978-12-27 PROCESS FOR THE MANUFACTURING OF SEMIPERMEABLES MEMBRANES BASED ON ACRYLNITRILE POLYMERISATES AND HETEROGENIC MEMBRANES
FR7836431A FR2413108A1 (en) 1977-12-28 1978-12-27 PROCESS FOR THE MANUFACTURE OF SEMI-PERMEABLE MEMBRANES
GB7850090A GB2011828B (en) 1977-12-28 1978-12-28 Semipermeable membranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP541978A JPS5499083A (en) 1978-01-21 1978-01-21 Production of semipermeable membrane

Publications (1)

Publication Number Publication Date
JPS5499083A true JPS5499083A (en) 1979-08-04

Family

ID=11610626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP541978A Pending JPS5499083A (en) 1977-01-12 1978-01-21 Production of semipermeable membrane

Country Status (1)

Country Link
JP (1) JPS5499083A (en)

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