GB866723A - Improvements relating to ion-exchange membranes - Google Patents

Improvements relating to ion-exchange membranes

Info

Publication number
GB866723A
GB866723A GB3102656A GB3102656A GB866723A GB 866723 A GB866723 A GB 866723A GB 3102656 A GB3102656 A GB 3102656A GB 3102656 A GB3102656 A GB 3102656A GB 866723 A GB866723 A GB 866723A
Authority
GB
United Kingdom
Prior art keywords
membrane
exchange
ions
quaternary ammonium
chloride
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
GB3102656A
Inventor
Thomas Victor Arden
Mervyn Kenneth Cooper
Maurice Edward Hugh Fitzgerald
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.)
Allen and Hanburys Ltd
Permutit Co Ltd
Original Assignee
Allen and Hanburys Ltd
Permutit Co 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
Application filed by Allen and Hanburys Ltd, Permutit Co Ltd filed Critical Allen and Hanburys Ltd
Priority to GB3102656A priority Critical patent/GB866723A/en
Publication of GB866723A publication Critical patent/GB866723A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/20—Manufacture of shaped structures of ion-exchange resins
    • C08J5/22—Films, membranes or diaphragms
    • C08J5/2287—After-treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
    • A61L2300/204—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials with nitrogen-containing functional groups, e.g. aminoxides, nitriles, guanidines
    • A61L2300/208—Quaternary ammonium compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
    • A61L2300/408—Virucides, spermicides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

A cation-exchange membrane, preferably comprising finely ground cation-exchange material such as a sulphonated cross-linked polymer of styrene or a cross-linked polymer of methacrylic acid dispersed in a plastic matrix, e.g. polythene, has absorbed upon it complex cations of a quaternary ammonium compound possessing antibacterial and/or antifungal properties, such as decamethylene-bis-4-aminoquinaldinium chloride. The membrane may be used in the moist form as a dressing or it may form the facing of a backed dressing. The membrane is prepared by first charging the cation-exchange material with ions readily exchangeable for quaternary ammonium ions and then treating the membrane with the quaternary ammonium compound in the form of the chloride. The exchangeable ions may be alkali-metal ions or preferably hydrogen ions from successive treatments with an acid such as hydrochloric or sulphuric acid. In the case of the hydrogen-charged membrane the free-acid formed during the exchange reaction is preferably removed or neutralized as it is formed, conveniently by absorption on an anion-exchange resin. The exchange may be conveniently carried out by treating the hydrogen-charged membrane with an anion-exchange resin in the free base form and a powdered quaternary ammonium salt (e.g. chloride) at least partly in solution in a mixture of methanol and water.
GB3102656A 1956-10-11 1956-10-11 Improvements relating to ion-exchange membranes Expired GB866723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3102656A GB866723A (en) 1956-10-11 1956-10-11 Improvements relating to ion-exchange membranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3102656A GB866723A (en) 1956-10-11 1956-10-11 Improvements relating to ion-exchange membranes

Publications (1)

Publication Number Publication Date
GB866723A true GB866723A (en) 1961-04-26

Family

ID=10316816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3102656A Expired GB866723A (en) 1956-10-11 1956-10-11 Improvements relating to ion-exchange membranes

Country Status (1)

Country Link
GB (1) GB866723A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758250A (en) * 1987-06-01 1988-07-19 Air Products And Chemicals, Inc. Ammonia separation using ion exchange polymeric membranes and sorbents
US4762535A (en) * 1987-06-02 1988-08-09 Air Products And Chemicals, Inc. Ammonia separation using semipermeable membranes
GB2433205A (en) * 2005-12-16 2007-06-20 Ethicon Inc Wound dressing comprising a strong cation exchange resin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758250A (en) * 1987-06-01 1988-07-19 Air Products And Chemicals, Inc. Ammonia separation using ion exchange polymeric membranes and sorbents
US4762535A (en) * 1987-06-02 1988-08-09 Air Products And Chemicals, Inc. Ammonia separation using semipermeable membranes
GB2433205A (en) * 2005-12-16 2007-06-20 Ethicon Inc Wound dressing comprising a strong cation exchange resin
WO2007068885A2 (en) * 2005-12-16 2007-06-21 Ethicon, Inc Active wound dressing materials
WO2007068885A3 (en) * 2005-12-16 2007-07-26 Ethicon Inc Active wound dressing materials

Similar Documents

Publication Publication Date Title
GB1048026A (en) Ion exchange materials
GB992814A (en) Sterilization solutions
SE7708956L (en) PROCEDURE FOR THE TREATMENT OF POLLUTED ION EXCHANGE RESINS, IN PARTICULAR POLLUTING CATHION ACTIVE RESINS
GB977092A (en) Improvements in or relating to ion exchange processes
GB863862A (en) Improvements in ion exchange materials
GB866723A (en) Improvements relating to ion-exchange membranes
ES278596A1 (en) Method of treating polyester polymer materials to improve their adhesion characteristics
GB695325A (en) Improvements in purification of hydrogen peroxide
Huang et al. Ion exchange of synthetic zeolites in various alcohols
KR860004097A (en) Process for preparing anion exchange resin with very low chlorine content
GB914004A (en) Process for the separation of metal ions and means for carrying out the process
GB960049A (en) Improvements in or relating to cation exchange resins
Radak et al. Ion exchange equilibria in synthetic zeolite 4A in a mixed solvent system
GB918406A (en) Process for the manufacture of cyclohexanol
GB791364A (en) Method of recovering magnesium salts from sea water
GB859282A (en) Improvements relating to ion-exchange resins
GB746609A (en) Process for reducing the concentration of electrolyte in a solution
GB885721A (en) Ion exchangers containing sulphydryl groups
GB771221A (en) Improvements relating to the treatment of water
GB862229A (en) Improvements in ion exchange membranes
GB855502A (en) Production of silica hydro-organosols and aerogels
GB1263984A (en) Process for producing lithium silicate compositions
JPS5628648A (en) Weak acidic cation exchange resin and manufacture thereof
GB1065479A (en) Process for brominating water and aqueous solutions
Clay et al. The γ‐radiolysis of zeocarb 225 cation‐exchange resins