DE906567C - Process for the production of dialysis membranes for alkali dialysis - Google Patents

Process for the production of dialysis membranes for alkali dialysis

Info

Publication number
DE906567C
DE906567C DES25577A DES0025577A DE906567C DE 906567 C DE906567 C DE 906567C DE S25577 A DES25577 A DE S25577A DE S0025577 A DES0025577 A DE S0025577A DE 906567 C DE906567 C DE 906567C
Authority
DE
Germany
Prior art keywords
dialysis
alkali
membranes
production
fabric
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
DES25577A
Other languages
German (de)
Inventor
Dr Friedrich Hildebrandt
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.)
Spinnfaser AG
Original Assignee
Spinnfaser 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 Spinnfaser AG filed Critical Spinnfaser AG
Priority to DES25577A priority Critical patent/DE906567C/en
Application granted granted Critical
Publication of DE906567C publication Critical patent/DE906567C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation
    • C01D1/38—Purification; Separation by dialysis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/59—Polyamides; Polyimides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • External Artificial Organs (AREA)

Description

Verfahren zur Herstellung von Dialysiermembranen für die Laugendialyse Für die großtechnische Laugendialyse bedarf es solcher Membranen, die bei hoher Dialysierleistung in einfacher Weise eingesetzt werden können und lange halten.Process for the production of dialysis membranes for alkali dialysis For large-scale alkali dialysis, such membranes are required, which are at high Dialysis performance can be used in a simple manner and last for a long time.

Von den gebräuchlichen Membranen aus Leinen oder Baumwolle, z. B. zur Preßlaugendialyse in Viskosefabriken werden diese Forderungen nur teilweise erfüllt. In Sackform in Ceriniapparaten eingesetzt, entwickeln diese Cellulosegewebe zwar eine gute Dialysierleistung, sind jedoch nur begrenzt haltbar, besonders dann, wenn die für die Herstellung der Diälysiergewebe verwandte Faser nicht einwandfrei war. Bei anderen Dialysiermembranen auf synthetischer Basis mit an sich guten Dialysiereigenschaften bereitet der Einsatz in Folien- bzw. Schlauchform Schwierigkeiten. Die Folien besitzen nur eine geringe Festigkeit und werden leicht beschädigt. Der Einbau von Schläuchen ist umständlich und zeitraubend. Wieder andere Membranen aus synthetischem Material, wie z. B. Polyvinylchloridgewebe, besitzen zwar eine gute mechanische Festigkeit und ausgezeichnete chemische Widerstandsfähigkeit, aber keine Dialysiereigenschaften.Of the common membranes made of linen or cotton, e.g. B. these requirements are only partially met for press liquor dialysis in viscose factories Fulfills. Used in sack form in cerini machines, these develop cellulose fabrics dialysis performance is good, however, they are only durable for a limited period of time, especially when if the fiber used for the production of dialysis tissue is not perfect was. With other synthetic-based dialysis membranes with inherently good dialysis properties the use in film or tube form causes difficulties. Own the slides have poor strength and are easily damaged. The installation of hoses is cumbersome and time consuming. Still other membranes made of synthetic material, such as B. polyvinyl chloride fabric, although have good mechanical strength and excellent chemical resistance, but no dialysis properties.

Es wurde nun gefunden, daß sich hochwertige Dialysiermembranen herstellen lassen, wenn man chemisch indifferente bzw. laugebeständige Trägergewebe mit solchen Stoffen ausrüstet, die als Diaphragma für Lauge geeignet sind. Wenn man z. B. ein Polyvinylchloridgewebe mit einer wäßrigen Lösung von Polyvinylalkohol imprägniert, dann erhält man eine Membran von hoher Dialysierleistung, die sich ohne Schwierigkeiten in Sackform in normalen Ceriniapparaten einsetzen läßt. Die Membran besitzt eine hohe mechanische Festigkeit und ist völlig unempfindlich gegenüber Belastungsschwankungen bei vorübergehendem Ab-und Anstellen der Dialysierapparate. Die Laugebeständigkeit des Trägergewebes erlaubt es außerdem, den verbrauchten Dialysierbelag gegebenenfalls zu erneuern. Ein weiterer Vorzug einer solchen Kombinationsmembran besteht darin, däß Trägergewebe und Dialysierbelag aus chemisch definierten Stoffen von gleichbleibender Qualität bestehen, im Gegensatz zu beispielsweise Baumwollgeweben, deren Gebrauchswert je nach der Güte der verwandten Baumwolle erheblich schwankt.It has now been found that high quality dialysis membranes can be produced leave, if you chemically indifferent or alkali-resistant carrier fabric with such Equips substances that are suitable as a diaphragm for lye. If you z. B. a Polyvinyl chloride fabric impregnated with an aqueous solution of polyvinyl alcohol, then one obtains a membrane of high dialysis performance which can be easily removed can be used in sack form in normal cerini apparatus. The membrane has a high mechanical strength and is completely insensitive to Load fluctuations when the dialyzer is temporarily switched on and off. The alkali resistance of the carrier fabric also allows the used dialysis coating to be renewed if necessary. Another advantage of such a combination membrane consists in that the carrier tissue and dialysis coating are made of chemically defined substances consist of consistent quality, in contrast to, for example, cotton fabrics, the use value of which varies considerably depending on the quality of the cotton used.

Die Kombinationsmembran vereinigt in sich die Vorzüge der Komponenten, ohne mit deren Mängeln behaftet zu sein. Sie stellt gegenüber den bisher bekannten Dialysiermembranen einen wesentlichen Fortschritt dar.The combination membrane combines the advantages of the components, without being afflicted with their defects. It contrasts the previously known Dialysis membranes represent a significant advance.

Die Ausrüstung der Trägergewebe geschieht in einfacher Weise durch Aufstreichen oder Aufspritzen der gelösten oder dispergierten Imprägniermittel oder gegebenenfalls auch durch Kaschieren oder Tauchen.The finishing of the carrier fabric is done in a simple manner Spreading or spraying on the dissolved or dispersed impregnating agent or possibly also by lamination or dipping.

Als folienbildende Imprägnierungsmittel zur Herstellung von Kombinationsmembranen für Laugendialyse eignen sich unter anderem Imprägnierungsmittel mit Dialysierwirkung auf Polyvinyl-, Polyamid- oder Polyurethanbasis.As a film-forming impregnation agent for the production of combination membranes For alkali dialysis, impregnants with dialysis properties are suitable based on polyvinyl, polyamide or polyurethane.

Als Trägergewebe für Kombinationsmembranen kommen die verschiedensten chemisch indifferenten oder alkalibeständigen Fasern organischer oder anorganischer Natur in Betracht, wie z. B. Gewebe aus Fasern auf Polyvinylchlorid-, Polyamid- oder Polyurethanbasis, ferner Metallgewebe sowie Glasgewebe.A wide variety of materials can be used as carrier fabrics for combination membranes chemically indifferent or alkali-resistant fibers of organic or inorganic fibers Nature into consideration, such as B. Fabric made of fibers on polyvinyl chloride, polyamide or polyurethane base, also metal fabric and glass fabric.

Es erweist sich als vorteilhaft; möglichst locker eingestellte Trägergewebe für die Kombinationsmembran zu verwenden, um eine große Dialysierfiäche zu erhalten.It turns out to be beneficial; Carrier fabric set as loosely as possible to use for the combination membrane in order to obtain a large dialysis area.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Dialysiermembranen für die Laugendiaiyse, dadurch gekennzeichnet, daß man Trägergewebe aus chemisch indifferenten oder alkalibeständigen organischen oder anorganischen Fasern mit Imprägnierungsmitteln mit Dialysierwirkung auf Polyvinyl-, Polyamid- oder Polyurethanbasis ausrüstet.PATENT CLAIM: Process for the production of dialysis membranes for the alkali diaiyse, characterized in that one carrier fabric made of chemically indifferent or alkali-resistant organic or inorganic fibers with impregnating agents Equipped with a dialysis effect based on polyvinyl, polyamide or polyurethane.
DES25577A 1951-11-11 1951-11-11 Process for the production of dialysis membranes for alkali dialysis Expired DE906567C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES25577A DE906567C (en) 1951-11-11 1951-11-11 Process for the production of dialysis membranes for alkali dialysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES25577A DE906567C (en) 1951-11-11 1951-11-11 Process for the production of dialysis membranes for alkali dialysis

Publications (1)

Publication Number Publication Date
DE906567C true DE906567C (en) 1954-03-15

Family

ID=7478399

Family Applications (1)

Application Number Title Priority Date Filing Date
DES25577A Expired DE906567C (en) 1951-11-11 1951-11-11 Process for the production of dialysis membranes for alkali dialysis

Country Status (1)

Country Link
DE (1) DE906567C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020600B (en) * 1955-06-11 1957-12-12 Bayer Ag Use of films that swell in water as anion exchange membranes
DE1216246B (en) * 1957-06-18 1966-05-12 Standard Oil Co Separation of water from organic substances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020600B (en) * 1955-06-11 1957-12-12 Bayer Ag Use of films that swell in water as anion exchange membranes
DE1216246B (en) * 1957-06-18 1966-05-12 Standard Oil Co Separation of water from organic substances

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