DE394755C - Method of making a cellulose gel - Google Patents

Method of making a cellulose gel

Info

Publication number
DE394755C
DE394755C DEF49689D DEF0049689D DE394755C DE 394755 C DE394755 C DE 394755C DE F49689 D DEF49689 D DE F49689D DE F0049689 D DEF0049689 D DE F0049689D DE 394755 C DE394755 C DE 394755C
Authority
DE
Germany
Prior art keywords
cellulose gel
making
water
heated
autoclave
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
DEF49689D
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.)
OTTO FAUST DR
Original Assignee
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
Priority claimed from DEF49245D external-priority patent/DE393293C/en
Application filed by OTTO FAUST DR filed Critical OTTO FAUST DR
Priority to DEF49689D priority Critical patent/DE394755C/en
Application granted granted Critical
Publication of DE394755C publication Critical patent/DE394755C/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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Description

Verfahren zur Herstellung eines Zellulosegels. Die im Hauptpatent 393293 beschriebenen Zellulosegele werden zweckmäßig zur Reinigung, vollkommenen Durchkoagulierung und Erreichung der wünschenswerten Unlöslichkeit einer Nachbehandlung mit einer Flüssigkeit, z. B. Wasser, Alkohol oder auch Wasser mit Zusätzen von Elektrolyten oder Alkohol u. dgl. Flüssigkeit, erhitzt und gekocht (gegebenenfalls in Druckgefäßen). Die Herstellung des Zellulosegels kann auch direkt in Autoklaven mit inerten Gasen nach folgenden Beispielen durchgeführt werden.Method of making a cellulose gel. The one in the main patent 393293 described cellulose gels are useful for cleaning, perfect Thorough coagulation and achievement of the desirable insolubility of an aftertreatment with a liquid, e.g. B. water, alcohol or water with additions of electrolytes or alcohol and similar liquid, heated and boiled (if necessary in pressure vessels). The cellulose gel can also be produced directly in an autoclave with inert gases be carried out according to the following examples.

x. lo-kg Viskose werden in einen Autoklaven gefüllt und mit einem inerten Gase (z. B. Stickstoff) unter einen Druck von 5 bis io Atm. gesetzt. Hierauf wird die Masse durch direkte Feuerung oder zweckmäßig in einem Bade (Wasserbad) auf 6o° so lange erhitzt, bis eine Durchkoagulation der gesamten Viskose eingetreten ist. Hierauf wird durch einen weiteren, in dem Autoklaven angebrachten Stutzen Wasser eingepreßt (nötigenfalls unter Verringerung des Stickstoffdruckes) und der Autoklav auf ioo° eine halbe Stunde erhitzt. Alsdann läßt man das Wasser durch ein Ventil austreten und füllt von neuem mit frischem Wasser. Dieses Reinigungsverfahren mit Wasser wird so lange wiederholt, bis die gesamte Masse gut durchkoaguliert und ausgewaschen ist.x. lo-kg viscose are filled into an autoclave and with a inert gases (e.g. nitrogen) under a pressure of 5 to 10 atm. set. On that is the mass by direct firing or, expediently, in a bath (water bath) Heated to 60 ° until all of the viscose coagulates is. Thereupon water is supplied through a further connection in the autoclave pressed in (if necessary by reducing the nitrogen pressure) and the autoclave heated to 100 ° for half an hour. Then let the water through a valve come out and fill again with fresh water. This cleaning process with Water is repeated until the entire mass is well coagulated and washed out is.

2. io kg Viskose, die auf irgendeinem Wege koaguliert worden sind, werden in einen Autoklaven überführt und hierin mit einer wässerigen Salzlösung (z. B. ioprozentigen Kochsalzlösung, der einige Prozent Alkohol zugesetzt sein können) tiberschichtet. Nach dem Schließen des Autoklaven wird eine halbe Stunde auf etwa i2o ° erhitzt. Alsdann läßt man die Salzlösung durch einen Stutzen ausströmen und wiederholt nötigenfalls den Kochprozeß.2. 10 kg of viscose which has been coagulated in some way, are transferred to an autoclave and therein with an aqueous saline solution (e.g. 10 percent saline solution to which a few percent alcohol may be added) overlaid. After closing the autoclave, it takes about half an hour i2o ° heated. The saline solution is then allowed to flow out through a nozzle and repeat the cooking process if necessary.

Man kann auch, wie unter Beispiel i angegeben, künstlich einen Druck durch inerte Gase erzeugen und die Erhitzungstemperatur niedriger (z. B. nur auf 8o') halten.One can also, as indicated under example i, artificially apply a pressure generated by inert gases and the heating temperature lower (e.g. only on 8o ').

3. io kg Viskose, die in bekannter Weise koaguliert sind, werden in einem offenen Gefäß mit einer 15prozentigen Natriumsulfatlösung überschichtet und auf 6o' erwärmt. Die Erwärmung wird so, lange fortgesetzt, bis das Zellulosegel genügend fest und rein ist. Hierzu kann nötigenfalls eine Erneuerung der Waschflüssigkeit vorgesehen werden.3. 10 kg of viscose, which are coagulated in a known manner, are in an open vessel covered with a 15 percent sodium sulfate solution and heated to 6o '. The heating is continued until the cellulose gel is sufficiently firm and pure. If necessary, the washing liquid can be renewed for this purpose are provided.

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung des durch Patent 393293 geschützten Verfahrens zur Herstellung eines Zellulosegels aus Viskose, dadurch gekennzeichnet, daß man Zellulosegele mit Wasser, dem Salze oder Alkohol zugesetzt sind, gegebenenfalls unter Druck, erhitzt.PATENT CLAIM: Further training of that protected by patent 393293 Process for the production of a cellulose gel from viscose, characterized in that that cellulose gels with water, salts or alcohol are added, if appropriate under pressure, heated.
DEF49689D 1921-04-30 1921-07-08 Method of making a cellulose gel Expired DE394755C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF49689D DE394755C (en) 1921-04-30 1921-07-08 Method of making a cellulose gel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF49245D DE393293C (en) 1921-04-30 1921-04-30 Process for the production of a for further processing on films u. Like. Suitable cellulose gel made of viscose
DEF49689D DE394755C (en) 1921-04-30 1921-07-08 Method of making a cellulose gel

Publications (1)

Publication Number Publication Date
DE394755C true DE394755C (en) 1924-05-05

Family

ID=7103206

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF49689D Expired DE394755C (en) 1921-04-30 1921-07-08 Method of making a cellulose gel

Country Status (1)

Country Link
DE (1) DE394755C (en)

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