EP0715540A1 - Membranes preparees a partir de polymeres solubles reticulables - Google Patents

Membranes preparees a partir de polymeres solubles reticulables

Info

Publication number
EP0715540A1
EP0715540A1 EP94926547A EP94926547A EP0715540A1 EP 0715540 A1 EP0715540 A1 EP 0715540A1 EP 94926547 A EP94926547 A EP 94926547A EP 94926547 A EP94926547 A EP 94926547A EP 0715540 A1 EP0715540 A1 EP 0715540A1
Authority
EP
European Patent Office
Prior art keywords
polymer
discriminating layer
solution
polymer solution
support
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.)
Withdrawn
Application number
EP94926547A
Other languages
German (de)
English (en)
Inventor
David J. Forgach
J. Keith Harris
Paul G. Glugla
Donald L. Schmidt
Richard F. Fibiger
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of EP0715540A1 publication Critical patent/EP0715540A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/106—Membranes in the pores of a support, e.g. polymerized in the pores or voids

Definitions

  • the process may be continuous.
  • the substituents on the photolabile onium are each independently hydroxyalkyl, phenyl or alkyl groups or are heterocyclic saturated moieties which include the onium in the ring.
  • the photolabile onium group is bonded to the -(-CH2-)- moiety of a benzyl group and is a dialkyl sulfonium, trialkyl phosphonium or trialkyl ammonium moiety wherein each alkyl has from about 1 to about 16 carbon atoms or is a sulfonium, alkyl phosphonium or alkyl ammonium where two of the valences are part of a five- or six-member ring including the onium.
  • Rp may be an alkyl which is not fully fluorinated, but no more than one atom of hydrogen or chlorine should be present in place of fluorine for each carbon atom.
  • R ⁇ is a group which includes a carbon-carbon single bond formed during vinyl addition polymerization of the polymer and Y is a chemical bond or a noninterfering, bivalent moiety.
  • ArC is a chromophore
  • Z is a linking group
  • Q ® a photolabile onium as defined hereinbefore.
  • R ⁇ is the residue of an ethylenically unsaturated monomer, more preferably fCH 2 -CH ⁇ or
  • u is independently at each occurrence an integer from 1 to 20 and v is an integer from 1 to 12, but preferably 1.
  • Illustrative examples of B include
  • G is an organic noninterfering group, such as
  • the first and second compounds can be prepared in situ from polymerizable moieties bearing at least one nucleophilic or onium group.
  • polymerizable moieties bearing at least one nucleophilic or onium group For example, vinylbenzyl chloride, hydroxyethylmethacrylate and methacrylic acid can be copolymerized using a free radical initiator.
  • the film was loosened from the edge of the dish.
  • the volume of the solution below the film was increased four times by the addition of water through a syringe.
  • the submerged support was drawn up through the film to laminate the film on to the support which was then placed for one hour in an oven pre-heated to 90°C.
  • a 1.5 inch in diameter disk was cut out of the support. This disk was placed in a solution of 1:1 weight: eight isopropanol and water to rewet the polysulfone support. The disk was then immersed in deionized water for a few minutes and then assembled into a reverse osmosis test cell and tested sequentially with the following feed solutions: 2000 ppm NaCl in deionized water at 250 psi; 2000 ppm MgS04 in deionized water at 250 psi; 6 percent corn syrup in deionized water containing 50 ppm Thimerosal antimicrobial. Feed was circulated at a rate of 100 cm3/min.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

La présente invention se rapporte à la formation d'une membrane composite présentant une couche de séparation fixée à une couche support poreuse. Le procédé consiste à former cette couche de séparation en irradiant une solution polymère aqueuse contenant 0,01 à 30 % en poids d'un polymère dans des conditions suffisantes pour former un film polymère sur la surface de la solution polymère à l'interphase de la solution et d'un fluide de couverture. Un polymère préféré est un terpolymère hydroxyéthylméthacrylate/vinylbenzyldiméthyle sulfonium/acide méthacrylique.
EP94926547A 1993-08-23 1994-08-22 Membranes preparees a partir de polymeres solubles reticulables Withdrawn EP0715540A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11060593A 1993-08-23 1993-08-23
US110605 1993-08-23
PCT/US1994/009432 WO1995005890A1 (fr) 1993-08-23 1994-08-22 Membranes preparees a partir de polymeres solubles reticulables

Publications (1)

Publication Number Publication Date
EP0715540A1 true EP0715540A1 (fr) 1996-06-12

Family

ID=22333939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926547A Withdrawn EP0715540A1 (fr) 1993-08-23 1994-08-22 Membranes preparees a partir de polymeres solubles reticulables

Country Status (6)

Country Link
EP (1) EP0715540A1 (fr)
JP (1) JPH09501609A (fr)
KR (1) KR960703659A (fr)
AU (1) AU675877B2 (fr)
CA (1) CA2169555A1 (fr)
WO (1) WO1995005890A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769148A (en) * 1987-11-18 1988-09-06 The Dow Chemical Company Novel polyamide reverse osmosis membranes
US4976897A (en) * 1987-12-16 1990-12-11 Hoechst Celanese Corporation Composite porous membranes and methods of making the same
NL9001273A (nl) * 1990-06-06 1992-01-02 Tno Semi-permeabel composietmembraan.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9505890A1 *

Also Published As

Publication number Publication date
CA2169555A1 (fr) 1995-03-02
KR960703659A (ko) 1996-08-31
AU675877B2 (en) 1997-02-20
JPH09501609A (ja) 1997-02-18
WO1995005890A1 (fr) 1995-03-02
AU7635394A (en) 1995-03-21

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK ES FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THE DOW CHEMICAL COMPANY

18W Application withdrawn

Withdrawal date: 19971008