GB1302619A - - Google Patents

Info

Publication number
GB1302619A
GB1302619A GB963370A GB1302619DA GB1302619A GB 1302619 A GB1302619 A GB 1302619A GB 963370 A GB963370 A GB 963370A GB 1302619D A GB1302619D A GB 1302619DA GB 1302619 A GB1302619 A GB 1302619A
Authority
GB
United Kingdom
Prior art keywords
grafting
polytetrafluoroethylene
quaternizing
nylon
graft polymer
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
GB963370A
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 filed Critical
Publication of GB1302619A publication Critical patent/GB1302619A/en
Expired 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
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00931—Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting
    • 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
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/04—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polycarbonamides, polyesteramides or polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/38—Graft polymerization

Abstract

1302619 Graft polymer membranes CONSIGLIO NAZIONALE DELLE RICERCHE 27 Feb 1970 9633/70 Heading C3G [Also in Division B1] Membranes for use in reverse osmosis are produced by contacting a matrix film, having a thickness of 1 to 25 microns, of a polyamide, polyethylene, polypropylene or polytetrafluoroethylene with a monomer (a) having functional polar groups or (b) capable of receiving functional polar groups, inducing at least partial graft polymerization of said monomer on to said matrix and, where necessary, further processing the thus formed graft polymer to add functional groups thereto, the resulting membrane containing at least 5 molar per cent of polar groups based upon the grafted monomer, being from 115 to 250% of the weight of the matrix prior to treatment and having a water permeability at least ten times greater than that of the said matrix. In the examples are produced by (1) grafting polytetrafluoroethylene or polyethylene with styrene, or styrene and divinylbenzene, and sulphonating the graft polymer; (2) grafting polytetrafluoroethylene with styrene, chloromethylating the graft polymer and quaternizing it with trimethylamine; (3) grafting polytetrafluoroethylene with acrylic acid or vinyl acetate; (4) grafting polytetrafluoroethylene, polypropylene or nylon with vinyl pyridine and quaternizing it with methyl iodide; (5) grafting nylon with vinyl pyridine and quaternizing it with ethyl bromide, alone or in the presence of alpha, alpha<SP>1</SP>-dibromo-para-ditolylsulphone; (6) grafting nylon with acrylic acid and hexamethylenediamine diacrylamide and (7) grafting nylon 6/11 copolyamide with vinyl pyridine and quaternizing it with ethyl bromide.
GB963370A 1970-02-27 1970-02-27 Expired GB1302619A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL7002832A NL7002832A (en) 1970-02-27 1970-02-27
BE746629 1970-02-27
GB963370 1970-02-27
DE19702009336 DE2009336A1 (en) 1970-02-27 1970-02-27 Semi-permeable membrane for desalination of brackish and sea water by means of hyperfiltration and process for their production
FR7007121A FR2080241A5 (en) 1970-02-27 1970-02-27

Publications (1)

Publication Number Publication Date
GB1302619A true GB1302619A (en) 1973-01-10

Family

ID=27507718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB963370A Expired GB1302619A (en) 1970-02-27 1970-02-27

Country Status (5)

Country Link
BE (1) BE746629A (en)
DE (1) DE2009336A1 (en)
FR (1) FR2080241A5 (en)
GB (1) GB1302619A (en)
NL (1) NL7002832A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032021A2 (en) * 1979-12-28 1981-07-15 Ici Australia Limited Cation exchange resin and production thereof, permselective membrane derived therefrom, and process for producing membrane
US4377010A (en) 1978-11-08 1983-03-22 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Biocompatible material comprising a base polymer bulk graft polymerized with an ethylenically unsaturated carboxylic acid
US4378448A (en) 1979-10-20 1983-03-29 Raychem Corporation Polyamide graft as hot-melt adhesive, and elastomer blend
US4506035A (en) * 1981-06-26 1985-03-19 Ici Australia Limited Microporous hydrophilic fluoropolymer membranes and method
US4702840A (en) * 1982-02-05 1987-10-27 Pall Corporation Charge modified polyamide membrane
US4707266A (en) * 1982-02-05 1987-11-17 Pall Corporation Polyamide membrane with controlled surface properties
EP0342239A1 (en) * 1987-11-04 1989-11-23 Mitsubishi Rayon Co., Ltd Porous membrane and process for its production
GB2330836A (en) * 1997-09-30 1999-05-05 Aisin Seiki Polyelectrolyte membrane for fuel cells
CN105148750A (en) * 2015-08-21 2015-12-16 浙江大学 Method for modifying surface of polyamide composite film

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904519A (en) * 1971-10-19 1975-09-09 Us Interior Reverse osmosis process using crosslinked aromatic polyamide membranes
FR2371477A1 (en) * 1976-04-02 1978-06-16 Uop Inc Composite semipermeable membrane for reverse osmosis - prepd. from cross-linked and grafted polyethyleneimines
FR2614214B1 (en) * 1987-04-23 1993-02-12 Commissariat Energie Atomique ORGANOMINERAL SEMI-PERMEABLE MEMBRANE AND ITS MANUFACTURING METHOD.
EP0369014B1 (en) * 1987-08-06 1993-12-15 Terumo Kabushiki Kaisha Hydrophilic porous membrane, process for its production and plasma-separating apparatus
FR2641539B1 (en) * 1989-01-06 1992-10-30 Morgane PROCESS FOR THE MANUFACTURE OF IRRADIATION ION EXCHANGE MEMBRANES AND MEMBRANES THUS OBTAINED

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377010A (en) 1978-11-08 1983-03-22 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Biocompatible material comprising a base polymer bulk graft polymerized with an ethylenically unsaturated carboxylic acid
US4378448A (en) 1979-10-20 1983-03-29 Raychem Corporation Polyamide graft as hot-melt adhesive, and elastomer blend
EP0032021A2 (en) * 1979-12-28 1981-07-15 Ici Australia Limited Cation exchange resin and production thereof, permselective membrane derived therefrom, and process for producing membrane
EP0032021A3 (en) * 1979-12-28 1981-07-22 Ici Australia Limited Cation exchange resin and production thereof, permselective membrane derived therefrom, and process for producing membrane
US4506035A (en) * 1981-06-26 1985-03-19 Ici Australia Limited Microporous hydrophilic fluoropolymer membranes and method
US4707266A (en) * 1982-02-05 1987-11-17 Pall Corporation Polyamide membrane with controlled surface properties
US4702840A (en) * 1982-02-05 1987-10-27 Pall Corporation Charge modified polyamide membrane
EP0342239A1 (en) * 1987-11-04 1989-11-23 Mitsubishi Rayon Co., Ltd Porous membrane and process for its production
EP0342239A4 (en) * 1987-11-04 1990-01-08 Mitsubishi Rayon Co Porous membrane and process for its production.
GB2330836A (en) * 1997-09-30 1999-05-05 Aisin Seiki Polyelectrolyte membrane for fuel cells
US6242123B1 (en) 1997-09-30 2001-06-05 Aisin Seiki Kabushiki Kaisha Solid polyelectrolyte membrane for fuel cells, and method for producing it
GB2330836B (en) * 1997-09-30 2001-06-06 Aisin Seiki Solid polyelectrolyte membrane for fuel cells,and method for producing it
CN105148750A (en) * 2015-08-21 2015-12-16 浙江大学 Method for modifying surface of polyamide composite film

Also Published As

Publication number Publication date
FR2080241A5 (en) 1971-11-12
BE746629A (en) 1970-07-31
DE2009336A1 (en) 1971-09-02
NL7002832A (en) 1971-08-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees