DE392371C - Process for the production of permeable membranes from regenerated cellulose - Google Patents

Process for the production of permeable membranes from regenerated cellulose

Info

Publication number
DE392371C
DE392371C DEF52927D DEF0052927D DE392371C DE 392371 C DE392371 C DE 392371C DE F52927 D DEF52927 D DE F52927D DE F0052927 D DEF0052927 D DE F0052927D DE 392371 C DE392371 C DE 392371C
Authority
DE
Germany
Prior art keywords
production
regenerated cellulose
permeable membranes
xanthate
membranes
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
DEF52927D
Other languages
German (de)
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.)
HEINRICH VOGEL DR
OTTO FAUST DR
Original Assignee
HEINRICH VOGEL DR
OTTO FAUST DR
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 HEINRICH VOGEL DR, OTTO FAUST DR filed Critical HEINRICH VOGEL DR
Priority to DEF52927D priority Critical patent/DE392371C/en
Application granted granted Critical
Publication of DE392371C publication Critical patent/DE392371C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B01D71/10—Cellulose; Modified cellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Description

Verfahren zur Herstellung halbdurchlässiger Membranen aus regenerierter Zellulose.Process for the production of semi-permeable membranes from regenerated Cellulose.

Es hat sich gezeigt, daß man zu besonders brauchbaren Membranen dadurch gelangt, daß man z. B. ungelöstes Zellulosexanthogenat zu mehr oder weniger feinen Häuten auswalzt, die man alsdann in bekannter Weise durch Anwendung physikalischer oder chemischer Regenerierungsmethoden in Zellulose iiberführt. It has been shown that this leads to particularly useful membranes arrives that one z. B. undissolved cellulose xanthate to more or less fine Hides, which are then rolled out in a known manner by applying physical or chemical regeneration methods converted into cellulose.

Die so erhaltenen Membranen zeigen bei gleicher Porengröße, wie ein durch Gießen aus gelöstem Zellulosexanthogenat hergestelltes Filter sie hat, eine ganz wesentlich höhere Durchlässigkeit, so daß die Geschwindigkeit des Durchtretens der zu dialysierenden Flüssigkeit eine wesentlich größere ist. Der Reifegrad des verwendeten Xanthogenates beeinflußt u. a. die Porengröße; man kann auch ganz ungereiftes Xanthogenat benutzen. The membranes obtained in this way have the same pore size as a filter made by pouring from dissolved cellulose xanthate it has a very much higher permeability, so that the speed of passage the liquid to be dialyzed is a much larger one. The maturity of the The xanthate used influences inter alia. the pore size; you can also use unripened ones Use xanthate.

Man kann auch vorteilhaft die hergestellten Membranen in bekannter Weise einer Härtung mit Formaldehyd unterziehen, wodurch die Quellung in Berührung mit Flüssigkeiten herabgesetzt oder ganz vermieden wird. So gehärtete Membranen zeigen noch größere Durchlässigkeit als ungehärtete. It is also advantageous to use the membranes produced in a known manner Way of hardening with formaldehyde, causing the swelling in contact is reduced or avoided entirely with liquids. Diaphragms hardened like this show even greater permeability than uncured.

Claims (1)

PATENT-ANSPRUCH: Verfahren zur Herstellung halbdurchlässiger Membranen aus regenerierter Zellulose, dadurch gekennzeichnet, daß ungelöstes Xanthogenat von beliebigem Reifegrad oder ungereift zu feinen Häuten ausgewalzt und alsdann regeneriert wird, wobei erforderlichenfalls die Häute nach ihrer Regenerierutig durch Behandlung in bekannter Weise mit Formaldehyd 0. dgl. gehärtet werden können. PATENT CLAIM: Process for the production of semi-permeable membranes made of regenerated cellulose, characterized in that undissolved xanthate of any degree of ripeness or unripe rolled out into fine skins and then is regenerated, if necessary, the hides after their regenerating can be cured by treatment in a known manner with formaldehyde 0.
DEF52927D 1922-11-17 1922-11-17 Process for the production of permeable membranes from regenerated cellulose Expired DE392371C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF52927D DE392371C (en) 1922-11-17 1922-11-17 Process for the production of permeable membranes from regenerated cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF52927D DE392371C (en) 1922-11-17 1922-11-17 Process for the production of permeable membranes from regenerated cellulose

Publications (1)

Publication Number Publication Date
DE392371C true DE392371C (en) 1924-03-20

Family

ID=7105853

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF52927D Expired DE392371C (en) 1922-11-17 1922-11-17 Process for the production of permeable membranes from regenerated cellulose

Country Status (1)

Country Link
DE (1) DE392371C (en)

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