ES8604028A1 - Asymmetric semi-permeable membrane - Google Patents

Asymmetric semi-permeable membrane

Info

Publication number
ES8604028A1
ES8604028A1 ES537916A ES537916A ES8604028A1 ES 8604028 A1 ES8604028 A1 ES 8604028A1 ES 537916 A ES537916 A ES 537916A ES 537916 A ES537916 A ES 537916A ES 8604028 A1 ES8604028 A1 ES 8604028A1
Authority
ES
Spain
Prior art keywords
formula
permeable membrane
gps
iii
repeat units
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.)
Expired
Application number
ES537916A
Other languages
Spanish (es)
Other versions
ES537916A0 (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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 GB838331198A external-priority patent/GB8331198D0/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of ES8604028A1 publication Critical patent/ES8604028A1/en
Publication of ES537916A0 publication Critical patent/ES537916A0/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The support layer and active layer are both formed from the same sulphonated polyarylethersulphone (I) where the membrane has a salt rejection and flux such that the ratio Flux (m/day)/(100-% salt rejection) (A) has a value of at least 0.05 (0.5). Also claimed is a sulphonated polysulphone deriv. contg. repeat units of formula (II) together with those of formula (III) and opt. a minor proportion of repeat units of formula (IV). -Ph1-O-Ph2-O-Ph1-SO2- (II) -Ph1-O-Ph1-SO2-Ph1-O-Ph1-SO2- (III) -Ph1-O-Ph1-O-Ph1-SO2- (IV) Ph1=phenylene residue Ph2=phenylene residue having one or two -SO3M1 gps.; and M1=divalent metal in a proportion sufficient to combine with the unsatis. valencies of the -SO3 gps.
ES537916A 1983-11-23 1984-11-23 Asymmetric semi-permeable membrane Expired ES8604028A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838331198A GB8331198D0 (en) 1983-11-23 1983-11-23 Membranes
GB848428499A GB8428499D0 (en) 1983-11-23 1984-11-12 Membranes

Publications (2)

Publication Number Publication Date
ES8604028A1 true ES8604028A1 (en) 1986-01-16
ES537916A0 ES537916A0 (en) 1986-01-16

Family

ID=26287028

Family Applications (1)

Application Number Title Priority Date Filing Date
ES537916A Expired ES8604028A1 (en) 1983-11-23 1984-11-23 Asymmetric semi-permeable membrane

Country Status (5)

Country Link
AU (1) AU580271B2 (en)
CA (1) CA1262994A (en)
DK (1) DK555284A (en)
ES (1) ES8604028A1 (en)
GR (1) GR81009B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU574740B2 (en) * 1983-11-23 1988-07-14 Imperial Chemical Industries Plc Sulfonated polyarylether sulfone and membranes prepared therefrom
CA1263572A (en) * 1984-06-15 1989-12-05 Kenichi Ikeda Sulfonated polysulfone composite semipermeable membranes and process for producing the same
GB8513114D0 (en) * 1985-05-23 1985-06-26 Ici Plc Membranes
GB8513103D0 (en) * 1985-05-23 1985-06-26 Ici Plc Solution of polymeric material
EP0341473B1 (en) * 1988-04-30 1999-10-06 Akzo Nobel N.V. Process for sulphonating aromatic polyether sulphones

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3161345D1 (en) * 1980-03-28 1983-12-15 Pennwalt Corp Method for preparing a membrane of a film-forming non-sulfonated sulfone polymer
AU574740B2 (en) * 1983-11-23 1988-07-14 Imperial Chemical Industries Plc Sulfonated polyarylether sulfone and membranes prepared therefrom
GB8512764D0 (en) * 1985-05-21 1985-06-26 Ici Plc Gas separation

Also Published As

Publication number Publication date
DK555284A (en) 1985-05-24
GR81009B (en) 1985-02-13
ES537916A0 (en) 1986-01-16
AU580271B2 (en) 1989-01-12
AU3574484A (en) 1985-05-30
CA1262994A (en) 1989-11-14
DK555284D0 (en) 1984-11-22

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519