FR2265454A2 - Polyether-polycarbonate block copolymer films - esp for haemodialysis made by casting from soln - Google Patents

Polyether-polycarbonate block copolymer films - esp for haemodialysis made by casting from soln

Info

Publication number
FR2265454A2
FR2265454A2 FR7422995A FR7422995A FR2265454A2 FR 2265454 A2 FR2265454 A2 FR 2265454A2 FR 7422995 A FR7422995 A FR 7422995A FR 7422995 A FR7422995 A FR 7422995A FR 2265454 A2 FR2265454 A2 FR 2265454A2
Authority
FR
France
Prior art keywords
polyether
membranes
haemodialysis
esp
soln
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
FR7422995A
Other languages
French (fr)
Other versions
FR2265454B2 (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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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
Priority claimed from US05/454,949 external-priority patent/US3941675A/en
Application filed by Uhde GmbH filed Critical Uhde GmbH
Publication of FR2265454A2 publication Critical patent/FR2265454A2/en
Application granted granted Critical
Publication of FR2265454B2 publication Critical patent/FR2265454B2/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • External Artificial Organs (AREA)
  • Laminated Bodies (AREA)

Abstract

Polycarbonate membranes, esp. for haemodialysis, are made by (1) casting onto a smooth substrate surface a layer of a soln. contg. a polyether-polycarbonate block copolymer (I) contg. 5-35 wt. % polyether component, a water miscible org. solvent (II) and an assistant solvent (III) which acts as a swelling agent for the (I), (2) partially evaporating the solvent (3) immersing the partially dried film in water to form a gelled membrane and (4) stripping the gelled me-membrane from the substrate surface. Compared with the normal cellulosic dialysis membranes the polycarbonate membranes are more effective in removing medium mol. wt. impurities (mol. wt. 500-3000), have higher bursting strength, and more rigid in the wet state can be fabricated by welding and give more rapid dialysis than Cuprophan (RTM) membranes.
FR7422995A 1974-03-26 1974-07-02 Polyether-polycarbonate block copolymer films - esp for haemodialysis made by casting from soln Granted FR2265454A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/454,949 US3941675A (en) 1971-09-28 1974-03-26 Bipolar multiple electrolytic cell comprising a diaphragm and electrode for same

Publications (2)

Publication Number Publication Date
FR2265454A2 true FR2265454A2 (en) 1975-10-24
FR2265454B2 FR2265454B2 (en) 1978-06-02

Family

ID=23806736

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7422995A Granted FR2265454A2 (en) 1974-03-26 1974-07-02 Polyether-polycarbonate block copolymer films - esp for haemodialysis made by casting from soln

Country Status (2)

Country Link
DE (1) DE2510337C2 (en)
FR (1) FR2265454A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240413A1 (en) * 1986-04-03 1987-10-07 Elf Atochem S.A. Electrolysis cathode and process for manufacturing such a cathode

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069151A (en) * 1976-03-31 1978-01-17 C. R. Bard, Inc. Thin polycarbonate membranes for use in hemodialysis
DE2636784A1 (en) * 1976-08-16 1978-02-23 Bayer Ag Poly:alkylene oxide di:ol bis-di:phenol carbonate prepn. - by heating poly:alkylene di:ol with carboxylic acid bis-aryl ester in presence of a catalyst and heating with di:phenol
US4900334A (en) * 1988-11-09 1990-02-13 The Dow Chemical Company Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1238180A (en) * 1967-09-21 1971-07-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240413A1 (en) * 1986-04-03 1987-10-07 Elf Atochem S.A. Electrolysis cathode and process for manufacturing such a cathode
FR2596776A1 (en) * 1986-04-03 1987-10-09 Atochem CATHODE FOR ELECTROLYSIS AND METHOD FOR MANUFACTURING THE SAME CATHODE

Also Published As

Publication number Publication date
DE2510337A1 (en) 1975-10-09
FR2265454B2 (en) 1978-06-02
DE2510337C2 (en) 1983-11-10

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