GB1536227A - Composite semi-permeable membranes and methods of making same - Google Patents

Composite semi-permeable membranes and methods of making same

Info

Publication number
GB1536227A
GB1536227A GB11609/76A GB1160976A GB1536227A GB 1536227 A GB1536227 A GB 1536227A GB 11609/76 A GB11609/76 A GB 11609/76A GB 1160976 A GB1160976 A GB 1160976A GB 1536227 A GB1536227 A GB 1536227A
Authority
GB
United Kingdom
Prior art keywords
cross
reactive sites
linked
polymer
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.)
Expired
Application number
GB11609/76A
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.)
Honeywell UOP LLC
Original Assignee
UOP LLC
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 UOP LLC filed Critical UOP LLC
Priority to GB11609/76A priority Critical patent/GB1536227A/en
Publication of GB1536227A publication Critical patent/GB1536227A/en
Expired 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
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/60—Polyamines
    • B01D71/601—Polyethylenimine
    • 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
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/60—Polyamines
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6212—Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6415—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having nitrogen
    • C08G18/6423—Polyalkylene polyamines; polyethylenimines; Derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

1536227 Polymeric semipermeable membranes UOP Inc 23 March 1976 11609/76 Headings C3R and C3L [Also in Division B1] A method of making semipermeable membranes comprises reacting a film-forming polymer with a monomer which reacts with and cross-links the polymer to form a cross-linked polymeric film having semipermeable properties and grafting on to the polymer at reactive sites a reactant which blocks such reactive sites at which oxidizing attack or fouling might otherwise occur. The grafting reaction may be before, during or after the cross-linking reaction. The polymer may be a polyethyleimine or a polyvinyl alcohol. When a polyethylenimine is used it may be cross-linked with a di- or triacyl halide, sulphonyl halide, bischloroformate or diisocyanate and the reactive sites may be blocked with an ethylenic compound, an epoxide an aldehyde or an anhydride. When a polyvinyl alcohol is used it is cross-linked with a di- or tri-acyl halide, diisocyanate or ethylenic compound which reacts with hydroxyl groups and the reactive sites (remaining hydroxyl groups) are blocked with an acid halide, isocyanate or epoxide. In examples polyethylenimines are reacted with acrylonitrile and with epichlorhydrin to block reactive sites, coated on a porous fabric-reinforced polysulphone substrate and cross-linked with isophthaloyl chloride to form supported membranes; a similarly supported membrane of polyvinyl alcohol also is obtained, cross-linked with isophthaloyl chloride and with reactive sites blocked by reaction with epichlorhydrin; the membranes are tested for salt-rejection using aqueous sodium chloride solution.
GB11609/76A 1976-03-23 1976-03-23 Composite semi-permeable membranes and methods of making same Expired GB1536227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11609/76A GB1536227A (en) 1976-03-23 1976-03-23 Composite semi-permeable membranes and methods of making same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11609/76A GB1536227A (en) 1976-03-23 1976-03-23 Composite semi-permeable membranes and methods of making same

Publications (1)

Publication Number Publication Date
GB1536227A true GB1536227A (en) 1978-12-20

Family

ID=9989409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11609/76A Expired GB1536227A (en) 1976-03-23 1976-03-23 Composite semi-permeable membranes and methods of making same

Country Status (1)

Country Link
GB (1) GB1536227A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031730A2 (en) * 1979-12-28 1981-07-08 Teijin Limited The improved semipermeable composite membranes and process for their production
EP1700620A2 (en) * 2005-03-11 2006-09-13 Stedfast Inc. Polymeric composition acting as barrier to noxious agents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031730A2 (en) * 1979-12-28 1981-07-08 Teijin Limited The improved semipermeable composite membranes and process for their production
EP0031730A3 (en) * 1979-12-28 1981-12-30 Teijin Limited The improved semipermeable composite membranes and process for their production
US4388189A (en) 1979-12-28 1983-06-14 Takeyuki Kawaguchi Process for preparation of improved semipermeable composite membranes
EP1700620A2 (en) * 2005-03-11 2006-09-13 Stedfast Inc. Polymeric composition acting as barrier to noxious agents
EP1700620A3 (en) * 2005-03-11 2009-04-22 Stedfast Inc. Polymeric composition acting as barrier to noxious agents

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee