AT94343B - Process for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group difficult to wet or waterproof. - Google Patents

Process for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group difficult to wet or waterproof.

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Publication number
AT94343B
AT94343B AT94343DA AT94343B AT 94343 B AT94343 B AT 94343B AT 94343D A AT94343D A AT 94343DA AT 94343 B AT94343 B AT 94343B
Authority
AT
Austria
Prior art keywords
cellulose
waterproof
carbohydrates
wet
products
Prior art date
Application number
Other languages
German (de)
Inventor
Fritz Dr Moeller
Original Assignee
Fritz Dr Moeller
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 Fritz Dr Moeller filed Critical Fritz Dr Moeller
Application granted granted Critical
Publication of AT94343B publication Critical patent/AT94343B/en

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Description

  

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  Verfahren zum   Schwerbenetzbar-oder Wasserdichtmachen   von Zellulose, zellulosehaltigen Rohstoffen   und-fabrikaten, Zellulosederivaten   und anderen Kohlehydraten der Zellulosegruppe. 
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     Beispielweise   um Papier leimfest oder wasserdicht zu machen, genügt es, dasselbe mit einer solchen Geschwindigkeit über eine mit der unteren Seite in Thionylchlorid oder Chlorschwefel tauchende poröse Tonplatte zu führen, dass es ungefähr 2-10 Sekunden den Dämpfen ausgesetzt bleibt. Die Tonplatte befindet sich zweckmässig in einem flachen an den Gegenseiten mit Schlitzen zum   Ein-und Ausführen   des Papieres versehenen Kasten. Anstatt über eine feststehende Tonplatte kann man das zu behandelnde Papier auch bei gleicher Behandlungszeit über drehbare, poröse in Thionylchlorid oder Chlorschwefel eintauchende oder mit diesen Mitteln bespritzte Walzen führen. 



     Das neue Verfahren hatunteranderem den Vorzug, dass es auch beiniederer Temperatur überaus   schnell die gewünschte Wirkung, ein Schwerbenetzbar-oder Wasserdichtwerden der Zellulose usw. hervorruft. 



  Bei Anwendung niedrigerer Temperaturen ist weiterhin die Gefahr einer Schädigung der Zellulose in ihrer Festigkeit nicht in dem Masse gegeben, wie sie andererseits vorhanden ist, wenn, bei Behandlung bei höherer Temperatur (bei oder unterhalb des Siedepunktes von Thionylchlorid oder   Schwefelchlorür),   die zu behandelnden Stoffe zufällig längere Zeit den bei der Einwirkung entstehenden sauren Gasen ausgesetzt bleiben. Das neue Verfahren erleichtert erheblich die technische Ausgestaltung des in der Einleitung gekennzeichneten früher vorgeschlagenen Verfahrens. 



   PATENT-ANSPRÜCHE   :  
1. Verfahren zum   Schwerbenetzbar-oder   Wasserdichtmachen von Zellulose, zellulosehaltigen Rohstoffen   und-fabrikaten, Zellulosederivaten   und anderen Kohlehydraten der Zellulosegruppe, sowie mit solchen getränkten Stoffen mittels   Thionylchlorid- oder Chlorschwefeldämpfen,   dadurch gekennzeichnet, dass man die zu behandelnden Stoffe der Einwirkung von fein verteiltem flüssigem Thionylchlorid oder Chlorschwefel aussetzt, gegebenenfalls unter Zuführung von Wärme.



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  Process for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group difficult to wet or waterproof.
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     For example, to make paper glue-proof or waterproof, it is sufficient to run the same at such a speed over a porous clay plate immersed in thionyl chloride or chlorosulfur with the lower side that it remains exposed to the vapors for about 2-10 seconds. The clay plate is conveniently located in a flat box provided with slots on the opposite sides for inserting and removing the paper. Instead of a fixed clay plate, the paper to be treated can be guided over rotatable, porous rollers immersed in thionyl chloride or chlorosulfur or sprayed with these agents, even with the same treatment time.



     The new process has the advantage, among other things, that it produces the desired effect very quickly, the cellulose becoming difficult to wet or waterproof, etc. even at low temperatures.



  If lower temperatures are used, there is still the risk of damage to the strength of the cellulose not to the extent that it is otherwise present when the substances to be treated are treated at higher temperatures (at or below the boiling point of thionyl chloride or sulfur chloride) accidentally remain exposed to the acidic gases produced during exposure for a long time. The new method considerably simplifies the technical design of the previously proposed method identified in the introduction.



   PATENT CLAIMS:
1. A method for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group, as well as with such impregnated substances by means of thionyl chloride or sulfur chloride vapors, characterized in that the substances to be treated exposed to the action of finely divided liquid Exposing thionyl chloride or chlorosulfur, optionally with the addition of heat.

 

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man die zu behandelnden Stoffe der Einwirkung von in festen Medien fein verteiltem flüssigem Thionylehlorid oder Chlorschwefel aussetzt. 2. The method according to claim 1, characterized in that the substances to be treated are exposed to the action of liquid thionyl chloride or chlorosulfur which is finely divided in solid media.
AT94343D 1921-08-12 1922-07-21 Process for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group difficult to wet or waterproof. AT94343B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE94343X 1921-08-12

Publications (1)

Publication Number Publication Date
AT94343B true AT94343B (en) 1923-09-25

Family

ID=5645047

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94343D AT94343B (en) 1921-08-12 1922-07-21 Process for making cellulose, cellulose-containing raw materials and products, cellulose derivatives and other carbohydrates of the cellulose group difficult to wet or waterproof.

Country Status (1)

Country Link
AT (1) AT94343B (en)

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