GB2093460A - Porous polymer membrane and method of making it - Google Patents

Porous polymer membrane and method of making it

Info

Publication number
GB2093460A
GB2093460A GB8210910A GB8210910A GB2093460A GB 2093460 A GB2093460 A GB 2093460A GB 8210910 A GB8210910 A GB 8210910A GB 8210910 A GB8210910 A GB 8210910A GB 2093460 A GB2093460 A GB 2093460A
Authority
GB
United Kingdom
Prior art keywords
solution
poly
making
porous polymer
polymer membrane
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.)
Granted
Application number
GB8210910A
Other versions
GB2093460B (en
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.)
Chernikov Alexei Y
Original Assignee
Chernikov Alexei Y
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 Chernikov Alexei Y filed Critical Chernikov Alexei Y
Publication of GB2093460A publication Critical patent/GB2093460A/en
Application granted granted Critical
Publication of GB2093460B publication Critical patent/GB2093460B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/06—Polyhydrazides; Polytriazoles; Polyamino-triazoles; Polyoxadiazoles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A porous polymer membrane comprises poly-1,3,4-oxadiazol of a general formula: (FORMULA) where R and R<s1>s are divalent radicals at least one of them being capable to render said poly-1,3,4-oxadiazols soluble in organic solvents. A method of making such a membrane consists in preparing a 10 to 20% solution of said poly-1,2,4-oxadiazol in an organic solvent, for example, N-methylpyrrolidone and in applying that solution onto a forming surface with subsequent coagulation in the medium of a precipitant. Said solution may contain LiCl or P<u2>uO<u5>u in a quantity of 0.1 to 5 percent by weight of the solution. The membranes can be used in different fields of technology for concentration and separation of solutions, sterilization of medical preparations, sewage and water treatment.
GB8210910A 1980-08-22 1980-08-22 Porous polymer membrane and method of making it Expired GB2093460B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1980/000144 WO1982000648A1 (en) 1980-08-22 1980-08-22 Porous polymer membrane and method of making it

Publications (2)

Publication Number Publication Date
GB2093460A true GB2093460A (en) 1982-09-02
GB2093460B GB2093460B (en) 1984-02-01

Family

ID=21616656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8210910A Expired GB2093460B (en) 1980-08-22 1980-08-22 Porous polymer membrane and method of making it

Country Status (4)

Country Link
JP (1) JPS57501237A (en)
DE (1) DE3050547A1 (en)
GB (1) GB2093460B (en)
WO (1) WO1982000648A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563098A1 (en) * 1990-12-06 1993-10-06 Exxon Research Engineering Co Multi-block polymer comprising an oxazolidone prepolymer chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations.
WO1994004253A2 (en) * 1992-08-13 1994-03-03 The Dow Chemical Company Polyazole polymer-based membranes for fluid separation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252508A (en) * 1968-10-23 1971-11-03
SU520376A1 (en) * 1974-03-19 1976-07-05 Волгоградский Политехнический Институт The method of obtaining soluble poly-1,3,4-oxadiazoles
SU556155A1 (en) * 1974-12-19 1977-04-30 Предприятие П/Я М-5885 The method of obtaining aromatic poly1,3,4-oxadiazoles
JPS5633961B2 (en) * 1974-12-19 1981-08-07

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563098A1 (en) * 1990-12-06 1993-10-06 Exxon Research Engineering Co Multi-block polymer comprising an oxazolidone prepolymer chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations.
EP0563098A4 (en) * 1990-12-06 1993-11-24 Exxon Research And Engineering Company Multi-block polymer comprising an oxazolidone prepolymer chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations
WO1994004253A2 (en) * 1992-08-13 1994-03-03 The Dow Chemical Company Polyazole polymer-based membranes for fluid separation
WO1994004253A3 (en) * 1992-08-13 1994-05-26 The Dow Chemical Company Polyazole polymer-based membranes for fluid separation

Also Published As

Publication number Publication date
DE3050547A1 (en) 1982-09-23
WO1982000648A1 (en) 1982-03-04
GB2093460B (en) 1984-02-01
JPS57501237A (en) 1982-07-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee