CA2403301A1 - Composite membrane and method for making the same - Google Patents

Composite membrane and method for making the same Download PDF

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Publication number
CA2403301A1
CA2403301A1 CA002403301A CA2403301A CA2403301A1 CA 2403301 A1 CA2403301 A1 CA 2403301A1 CA 002403301 A CA002403301 A CA 002403301A CA 2403301 A CA2403301 A CA 2403301A CA 2403301 A1 CA2403301 A1 CA 2403301A1
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CA
Canada
Prior art keywords
subject
making
acyl halide
polyfunctional
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
CA002403301A
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French (fr)
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CA2403301C (en
Inventor
William E. Mickols
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 Global Technologies LLC
Original Assignee
Dow Global Technologies Inc.
William E. Mickols
The Dow Chemical Company
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24197538&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2403301(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dow Global Technologies Inc., William E. Mickols, The Dow Chemical Company filed Critical Dow Global Technologies Inc.
Publication of CA2403301A1 publication Critical patent/CA2403301A1/en
Application granted granted Critical
Publication of CA2403301C publication Critical patent/CA2403301C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • B01D69/1251—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction by interfacial polymerisation
    • 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
    • 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
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • 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
    • B01D71/56—Polyamides, e.g. polyester-amides

Abstract

A composite membrane and method for making the same, comprising a porous support and a polyamide surface. The subject membrane provides improved flux and/or rejection rates. The subject membrane is further capable of operating at lower oper-ating pressures. The subject method includes reacting a polyfunctional amine with a polyfunctional acyl halide to form a polyamide.
The method includes the step of contacting a complexing agent with the polyfunctional acyl halide prior subtantial reaction between the polyfunctional acyl halide and a polyfunctional amine. The subject process is easily adapted to commercial scale manufacturing processes and is particularly suited for making nanofiltration and reverse osmosis composite membranes.
CA002403301A 2000-04-17 2001-04-09 Composite membrane and method for making the same Expired - Fee Related CA2403301C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/550,527 2000-04-17
US09/550,527 US6337018B1 (en) 2000-04-17 2000-04-17 Composite membrane and method for making the same
PCT/US2001/011265 WO2001078882A2 (en) 2000-04-17 2001-04-09 Composite membrane and method for making the same

Publications (2)

Publication Number Publication Date
CA2403301A1 true CA2403301A1 (en) 2001-10-25
CA2403301C CA2403301C (en) 2009-08-25

Family

ID=24197538

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002403301A Expired - Fee Related CA2403301C (en) 2000-04-17 2001-04-09 Composite membrane and method for making the same

Country Status (13)

Country Link
US (4) US6337018B1 (en)
EP (1) EP1276551B1 (en)
JP (1) JP4932120B2 (en)
KR (1) KR100839805B1 (en)
CN (1) CN1210093C (en)
AU (2) AU2001255246B2 (en)
CA (1) CA2403301C (en)
DE (1) DE60139615D1 (en)
DK (1) DK1276551T3 (en)
ES (1) ES2328449T3 (en)
IL (2) IL152286A0 (en)
TW (1) TWI243707B (en)
WO (1) WO2001078882A2 (en)

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