AT86757B - Process for the production of alkali cellulose. - Google Patents

Process for the production of alkali cellulose.

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Publication number
AT86757B
AT86757B AT86757DA AT86757B AT 86757 B AT86757 B AT 86757B AT 86757D A AT86757D A AT 86757DA AT 86757 B AT86757 B AT 86757B
Authority
AT
Austria
Prior art keywords
production
cellulose
alkali cellulose
alkali
lye
Prior art date
Application number
Other languages
German (de)
Inventor
Carolus Lambertus Stulemeyer
Original Assignee
Carolus Lambertus Stulemeyer
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 Carolus Lambertus Stulemeyer filed Critical Carolus Lambertus Stulemeyer
Application granted granted Critical
Publication of AT86757B publication Critical patent/AT86757B/en

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  • Polysaccharides And Polysaccharide Derivatives (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Alkalizellulose. 



     Gemäss   dem Verfahren des Patentes Nr. 86756 erfolgt die Herstellung von Viskose in der Weise, dass man die Zellulose vor dem Merzerisationsprozess (Tauchen in Alkalilauge) möglichst luftfrei macht und zweckmässig auch die Behandlung mit Alkali selbst unter vermindertem Druck ausführt, Hierbei ergibt sich Viskose, die keine ungelösten Fasern enthält und daher leicht filtrierbar ist. Überdies wird die Behandlungsdauer durch dieses Vorgehen sehr abgekürzt. 



   Es wurde nun gefunden, dass ein bedeutend energischeres Eindringen der Alkalilauge in die einzelnen Zellen der Zellulosefasern stattfindet, wenn man, nachdem die Zugabe der 
 EMI1.1 
 Inhalt plötzlich unter Druck setzt. Beim Arbeiten nach dieser Methode erfolgt das Eindringen der Alkalilauge in die Zellen der Fasern beinahe augenblicklich. Vorteilhaft wir, d hierbei, wie dies bereits im Patent Nr. 86756 empfohlen ist, die Zellulose schon vor dem Zutritt der Lauge möglichst von Luft befreit. Die luftfrei gemachte Zellulose kann natürlich auch unmittelbar mit Lauge unter Druck behandelt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of alkali cellulose.



     According to the method of patent no.86756, the production of viscose is carried out in such a way that the cellulose is made as free of air as possible before the mercerization process (immersion in alkali lye) and the treatment with alkali itself is expediently carried out under reduced pressure. which does not contain any undissolved fibers and is therefore easy to filter. In addition, the duration of treatment is very shortened by this approach.



   It has now been found that the alkali lye penetrates the individual cells of the cellulose fibers significantly more vigorously if, after the addition of the
 EMI1.1
 Suddenly pressurizes content. When using this method, the penetration of the alkali into the cells of the fibers occurs almost instantaneously. Advantageously, as recommended in patent no. 86756, the cellulose is freed of air as far as possible before the lye enters. The air-free cellulose can of course also be treated directly with lye under pressure.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Alkalizellulose, insbesondere zu dem Zwecke der Viskosebereitung nach Stammpatent Nr. 86756, dadurch gekennzeichnet, dass man, nachdem die Zellulose luftfrei gemacht wurde bzw. die Zugabe der Lauge unter vermindertem Druck vor sich gegangen ist, das Tauchgefäss o. dgl. mit Inhalt unter Druck setzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of alkali cellulose, in particular for the purpose of viscose preparation according to parent patent no. 86756, characterized in that, after the cellulose has been made air-free or the addition of the lye has taken place under reduced pressure, the immersion vessel or the like. with content under pressure. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT86757D 1920-01-30 1920-01-30 Process for the production of alkali cellulose. AT86757B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT86757T 1920-01-30
AT86756T 1920-01-30

Publications (1)

Publication Number Publication Date
AT86757B true AT86757B (en) 1921-12-27

Family

ID=25604936

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86757D AT86757B (en) 1920-01-30 1920-01-30 Process for the production of alkali cellulose.

Country Status (1)

Country Link
AT (1) AT86757B (en)

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