FR2187516A1 - Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate - Google Patents

Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate

Info

Publication number
FR2187516A1
FR2187516A1 FR7220135A FR7220135A FR2187516A1 FR 2187516 A1 FR2187516 A1 FR 2187516A1 FR 7220135 A FR7220135 A FR 7220135A FR 7220135 A FR7220135 A FR 7220135A FR 2187516 A1 FR2187516 A1 FR 2187516A1
Authority
FR
France
Prior art keywords
sulphobetaine
trialkyl
leaching
polymer film
microporous membranes
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
FR7220135A
Other languages
French (fr)
Other versions
FR2187516B1 (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 SA
Original Assignee
Rhone Poulenc 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 SA filed Critical Rhone Poulenc SA
Priority to FR7220135A priority Critical patent/FR2187516A1/en
Publication of FR2187516A1 publication Critical patent/FR2187516A1/en
Application granted granted Critical
Publication of FR2187516B1 publication Critical patent/FR2187516B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01D71/30—Polyalkenyl halides
    • B01D71/301—Polyvinylchloride
    • 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
    • B01D71/30—Polyalkenyl halides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching

Abstract

The film contains a thorough mixture of (a) a copolymer or homo-, copolymer mixture of vinyl chloride and a vinyl ester partially saponified (contg. 2-30% pref. 3-20% of vinyl ester or alcohol and with specific viscosity 50-500 cm3 g-1 (b) >=9C sulphobetaine of formula (I): (where R1, R2, R3 are total 12-50C alkyl), and (c) a trialkyl or triaryl phosphate (1-8C pref. 3-5C e.g. triphenyl phosphate). Leaching agent is a water miscible alcohol. The membranes can be dried without loss of props. They are used for dialysis, ultrafiltration, gas permeation for separating He, O2 or N2.
FR7220135A 1972-06-05 1972-06-05 Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate Granted FR2187516A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7220135A FR2187516A1 (en) 1972-06-05 1972-06-05 Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7220135A FR2187516A1 (en) 1972-06-05 1972-06-05 Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate

Publications (2)

Publication Number Publication Date
FR2187516A1 true FR2187516A1 (en) 1974-01-18
FR2187516B1 FR2187516B1 (en) 1974-07-26

Family

ID=9099686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7220135A Granted FR2187516A1 (en) 1972-06-05 1972-06-05 Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate

Country Status (1)

Country Link
FR (1) FR2187516A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000042095A1 (en) * 1999-01-15 2000-07-20 3M Innovative Properties Company Flame retardant microporous materials
US6280845B1 (en) 1997-12-01 2001-08-28 3M Innovative Properties Company Multilayer films having at least five film layers, wherein at least one layer is flame retardant
WO2010024755A1 (en) * 2008-08-25 2010-03-04 General Electric Company Polyarylether compositions bearing zwitterinoic sulfobetaine functionalities

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6280845B1 (en) 1997-12-01 2001-08-28 3M Innovative Properties Company Multilayer films having at least five film layers, wherein at least one layer is flame retardant
WO2000042095A1 (en) * 1999-01-15 2000-07-20 3M Innovative Properties Company Flame retardant microporous materials
WO2010024755A1 (en) * 2008-08-25 2010-03-04 General Electric Company Polyarylether compositions bearing zwitterinoic sulfobetaine functionalities
US7985339B2 (en) 2008-08-25 2011-07-26 General Electric Company Polyarylether compositions bearing zwitterion functionalities

Also Published As

Publication number Publication date
FR2187516B1 (en) 1974-07-26

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