GB1412456A - Treatment of polyolefins - Google Patents

Treatment of polyolefins

Info

Publication number
GB1412456A
GB1412456A GB5922372A GB5922372A GB1412456A GB 1412456 A GB1412456 A GB 1412456A GB 5922372 A GB5922372 A GB 5922372A GB 5922372 A GB5922372 A GB 5922372A GB 1412456 A GB1412456 A GB 1412456A
Authority
GB
United Kingdom
Prior art keywords
membrane
membranes
powder
polyolefin
casting
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
GB5922372A
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.)
Yeda Research and Development Co Ltd
Original Assignee
Yeda Research and Development 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 Yeda Research and Development Co Ltd filed Critical Yeda Research and Development Co Ltd
Publication of GB1412456A publication Critical patent/GB1412456A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
    • C08J5/2218—Synthetic macromolecular compounds
    • C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
    • C08J5/2243—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds obtained by introduction of active groups capable of ion-exchange into compounds of the type C08J5/2231
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1412456 Ion exchange membranes YEDA RESEARCH & DEVELOPMENT CO Ltd 21 Dee 1972 [27 Dec 1971] 59223/72 Heading B5B Ion-exchange membranes of chloro-sulphonated polyolefins are prepared by (a) conditioning a polyolefin sheet, tube or powder with a halogenated swelling agent at a temperature below which the swelling agent dissolves the film to eliminate orientation and crystallinity in the polymer; (b) sulphochlorinating the swollen polyolefin; (c) in the case of polyolefin powder, casting or extruding a chlorinated aromatic solvent dope of the powder to form a membrane; and (d) hydrolysing or aminating the sulphochlorinated membrane to convert it into a cation- or anion-specific permselective membrane. The conditioning step (a) is preferably carried out using CCl 4 . Sulphochlorination step (b) is preferably effected at a temperature below 30‹ C. using a. mixture chlorine and sulphur dioxide gases until a sulphur content of 7-17 wt. per cent is attained. The preferred membrane casting solvent (step (c)) are chlorobenzene, dichlorobenzene and chlorinated naphthalene. In examples membranes having ion exchange capacities of 0À4-0À5 meq./g. are prepared either by sulphochlorinated of performed tubular or sheet polyethylene membranes or by sulphochlorination of ethylene or propylene powders followed by membrane casting or extrusion from these powders. The membranes were either hydrolysed with aqueous NaOH or aminated with N,N-dimethylpropanediamine.
GB5922372A 1971-12-27 1972-12-21 Treatment of polyolefins Expired GB1412456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL38458A IL38458A (en) 1971-12-27 1971-12-27 Process for the production of ion exchange membranes

Publications (1)

Publication Number Publication Date
GB1412456A true GB1412456A (en) 1975-11-05

Family

ID=11046270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5922372A Expired GB1412456A (en) 1971-12-27 1972-12-21 Treatment of polyolefins

Country Status (3)

Country Link
DE (1) DE2262335A1 (en)
GB (1) GB1412456A (en)
IL (1) IL38458A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728429A (en) * 1985-06-27 1988-03-01 Israel Cabasso Membrane permeation process for dehydration of organic liquid mixtures using sulfonated ion-exchange polyalkene membranes
US6913696B1 (en) 1999-03-25 2005-07-05 Pervasiv Ltd Separation of components of organic liquids

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015015009A1 (en) * 2013-08-02 2015-02-05 Hydroxsys (Malta) Limited Microporous polyolefinsulfonic acids and methods for their preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728429A (en) * 1985-06-27 1988-03-01 Israel Cabasso Membrane permeation process for dehydration of organic liquid mixtures using sulfonated ion-exchange polyalkene membranes
US6913696B1 (en) 1999-03-25 2005-07-05 Pervasiv Ltd Separation of components of organic liquids

Also Published As

Publication number Publication date
IL38458A (en) 1975-12-31
IL38458A0 (en) 1972-02-29
DE2262335A1 (en) 1973-07-05

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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