FR2293960A2 - Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane - Google Patents

Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane

Info

Publication number
FR2293960A2
FR2293960A2 FR7440453A FR7440453A FR2293960A2 FR 2293960 A2 FR2293960 A2 FR 2293960A2 FR 7440453 A FR7440453 A FR 7440453A FR 7440453 A FR7440453 A FR 7440453A FR 2293960 A2 FR2293960 A2 FR 2293960A2
Authority
FR
France
Prior art keywords
reverse osmosis
semi
skin
polyelectrolyte
contg
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
FR7440453A
Other languages
French (fr)
Other versions
FR2293960B2 (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.)
Rhone Poulenc Industries SA
Original Assignee
Rhone Poulenc Industries SA
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 Rhone Poulenc Industries SA filed Critical Rhone Poulenc Industries SA
Priority to FR7440453A priority Critical patent/FR2293960A2/en
Publication of FR2293960A2 publication Critical patent/FR2293960A2/en
Application granted granted Critical
Publication of FR2293960B2 publication Critical patent/FR2293960B2/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1212—Coextruded layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Semi-permeable composite membranes, for use in reverse osmosis, ultrafiltration and gaseous permeation comprise (a) an outer skin of a water-insoluble polymer with reverse osmosis or gaseous permeation activity, and (b) an anisotropic ultrafiltering membrane, the polymer in (a) having a mol. wt. sufficient for the membrane in (b) to have a rejection rate of 100% for the polymer solns. and the outer skin (a) being in contact with the least porous side of membrane (b). The total thickness of (a) is 3 mu, pref. 1 mu, and (a) is pref. at least partially dense.
FR7440453A 1974-12-10 1974-12-10 Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane Granted FR2293960A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7440453A FR2293960A2 (en) 1974-12-10 1974-12-10 Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7440453A FR2293960A2 (en) 1974-12-10 1974-12-10 Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane

Publications (2)

Publication Number Publication Date
FR2293960A2 true FR2293960A2 (en) 1976-07-09
FR2293960B2 FR2293960B2 (en) 1978-12-01

Family

ID=9145847

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7440453A Granted FR2293960A2 (en) 1974-12-10 1974-12-10 Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane

Country Status (1)

Country Link
FR (1) FR2293960A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143552A2 (en) * 1983-10-27 1985-06-05 Nitto Denko Corporation Composite membrane and process for the production thereof
US4717395A (en) * 1986-08-07 1988-01-05 The Dow Chemical Company Gas separations using membranes comprising sulphonated polyether sulphone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166051A1 (en) * 1971-12-28 1973-08-10 Sartorius Membranfilter Gmbh
FR2200030A1 (en) * 1972-09-19 1974-04-19 North Star Research Dev

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166051A1 (en) * 1971-12-28 1973-08-10 Sartorius Membranfilter Gmbh
FR2200030A1 (en) * 1972-09-19 1974-04-19 North Star Research Dev

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143552A2 (en) * 1983-10-27 1985-06-05 Nitto Denko Corporation Composite membrane and process for the production thereof
EP0143552A3 (en) * 1983-10-27 1987-09-02 Nitto Electric Industrial Co., Ltd. Composite membrane and process for the production thereof
US4717395A (en) * 1986-08-07 1988-01-05 The Dow Chemical Company Gas separations using membranes comprising sulphonated polyether sulphone

Also Published As

Publication number Publication date
FR2293960B2 (en) 1978-12-01

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