GB719330A - Polymeric cation exchangers - Google Patents

Polymeric cation exchangers

Info

Publication number
GB719330A
GB719330A GB6457/52A GB645752A GB719330A GB 719330 A GB719330 A GB 719330A GB 6457/52 A GB6457/52 A GB 6457/52A GB 645752 A GB645752 A GB 645752A GB 719330 A GB719330 A GB 719330A
Authority
GB
United Kingdom
Prior art keywords
water
acid
soluble
acrylonitrile
acrylic
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
GB6457/52A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB719330A publication Critical patent/GB719330A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/44—Preparation of metal salts or ammonium salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/16—Organic material
    • B01J39/18—Macromolecular compounds
    • B01J39/20—Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
    • B01J41/08—Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
    • B01J41/12—Macromolecular compounds
    • B01J41/14—Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange

Abstract

Cation exchangers, insoluble in water and weakly alkaline solutions, are produced by copolymerizing water or water-alcohol mixtures in (1) a water-soluble, unsaturated, polymerizable, monocarboxylic acid and/or water-soluble salt thereof with (2) a water soluble unsaturated polymerizable organic compound which contains at least two polymerizable ethylenic groups and which may be between 0.01 and 40 per cent. of the total monomers. Examples of (1) are acrylic and methacrylic acids, which may be partially replaced with fumaric acid, and of (2) are the reaction products of polyamines with acrylic or methacrylic acid, e.g. ethylene diacrylamide or the trimeric reaction product of formalin and acrylonitrile. Water-soluble polymerizable organic compounds containing no acid or salt group, such as acrylamide, methacrylamide and acrylonitrile, may also be present. Catalysts which may be used are hydrogen peroxide, persulphates and, in particular, combinations of the latter with reducing compounds such as sodium bisulphite and formamidine sulfinic acid. The copolymers are separated from their gels by evaporation of the solvent, addition of electrolytes, freezing out or the removal of water with another solvent. In examples the trimeric product of formalin and acrylonitrile is copolymerized with (1) sodium acrylate; (2) and (3) acrylic acid. The exchangers produced have marked swelling capacity and have therapeutic uses.
GB6457/52A 1951-03-12 1952-03-12 Polymeric cation exchangers Expired GB719330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE719330X 1951-03-12

Publications (1)

Publication Number Publication Date
GB719330A true GB719330A (en) 1954-12-01

Family

ID=6627176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6457/52A Expired GB719330A (en) 1951-03-12 1952-03-12 Polymeric cation exchangers

Country Status (1)

Country Link
GB (1) GB719330A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567430A (en) * 1987-04-01 1996-10-22 Stockhausen Gmbh Insecticidal delivery compositions and method for controlling a population of insects in an aquatic environment
US5806593A (en) * 1996-07-22 1998-09-15 Texaco Inc Method to increase sand grain coating coverage
US6646179B1 (en) 1993-02-24 2003-11-11 Kimberly-Clark Worldwide, Inc. Absorbent composite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567430A (en) * 1987-04-01 1996-10-22 Stockhausen Gmbh Insecticidal delivery compositions and method for controlling a population of insects in an aquatic environment
US5824328A (en) * 1987-04-01 1998-10-20 Stockhausen Gmbh Insecticidal delivery compositions and methods for controlling a population of insects in an aquatic environment
US6646179B1 (en) 1993-02-24 2003-11-11 Kimberly-Clark Worldwide, Inc. Absorbent composite
US5806593A (en) * 1996-07-22 1998-09-15 Texaco Inc Method to increase sand grain coating coverage

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