AT11066B - Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. - Google Patents

Process for the production of high-percentage solutions of cellulose in chlorzinc solutions.

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Publication number
AT11066B
AT11066B AT11066DA AT11066B AT 11066 B AT11066 B AT 11066B AT 11066D A AT11066D A AT 11066DA AT 11066 B AT11066 B AT 11066B
Authority
AT
Austria
Prior art keywords
solutions
cellulose
production
percentage
chlorzinc
Prior art date
Application number
Other languages
German (de)
Inventor
Emil Dr Bronnert
Original Assignee
Emil Dr Bronnert
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 Emil Dr Bronnert filed Critical Emil Dr Bronnert
Priority to AT11066D priority Critical patent/AT11066B/en
Application granted granted Critical
Publication of AT11066B publication Critical patent/AT11066B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  DR. EMIL BRONNERT 
 EMI1.1 
 



  Verfahren zur Herstellung von hochprozentigen Lösungen von Cellulose in   Chlorzink-     lösungen.   



   Es ist bekannt, dass Cellulose sich in einer konzentrierten   Chlorzinklösung   löst, besonders wenn das Losen bei etwa   1000 r.   vorgenommen wird, und dass eine derartig hergestellte Lösung zur Erzeugung künstlicher Seidenfäden anwendbar ist. 



   Es hat sich   jedoch herausgestellt, dass hiebei   nur ein geringer Prozentsatz von Cellulose und zwar höchstens etwa   40/0 in Lösung   gehen und dass   ausserdem   die zur Her-   stellung der Lösung erforderliche Warme eine   tiefer greifende Zersetzung wenigstens eines grösseren   Anteiles der Celiulose   bedingt, wodurch die Festigkeit der daraus hergestellten Faden sehr ungünstig beeinflusst wird.

   Man hat daher vorgeschlagen, um geeignetere und höher prozentige Celluloselösungen mittelst Chlorzink darzustellen, die Cellulose   zunächst     vor dem Lösen   in energischer Weise mit oxydierenden Bleichmitteln zu behandeln ; indessen ist ein solches Verfahren wenig geeignet, da die Cellulose, obwohl höher prozentige Lösungen erhalten werden, ebenfalls leicht eine zu   weitgehende Veränderung   erleidet,   indem     Oxycellulose gebildet   wird, so dass die aus einer so bereiteten Lösung hergestellten 
 EMI1.2 
 bringt, wodurch gleichfalls die so vorbereitete Cellulose ohne Anwendung höherer Tempe-   raturen und ohne chemische Veränderungen   in konzentrierter Chlorzinklösung in grösseren Mengen (80% und mehr) als   bisher möglich war,

   gelöst werden   kann, so dass eine solche   Lösung im besonderen   zur Erzeugung fester, ohne Anwendung von Beize zu färbender künstlicher Seidenfäden geeignet ist. Abgeschleuderte Cellulose, welche nach dem Verfahren des Patentes Nr. 8596 aufgeschlossen worden ist und im Trockengehalt etwa 80 kg 
 EMI1.3 
   getost und fadenxifhend geworden   ist. 



   Das Wesen und Neue der vorliegenden Erfindung der Herstellung spinnfähiger   Lösungen besteht   also darin, dass die   nach   dem Patent Nr. 8596 vorbereitete Cellulose bei niedriger, die Zersetzung ausschliessender Temperatur in   konzentrierter Chlorzinklauge   gelöst wird, statt wie bisher gewöhnliche Cellulose in heisser Chlorzinklauge, wodurch aber keine spinnfähigen Lösungen erzielt wurden. 

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



   <Desc / Clms Page number 1>
 



  DR. EMIL BRONNERT
 EMI1.1
 



  Process for the production of high-percentage solutions of cellulose in zinc chloride solutions.



   It is known that cellulose dissolves in a concentrated zinc chloride solution, especially when the dissolving occurs at around 1000 r. is made, and that a solution produced in this way can be used for the production of artificial silk threads.



   It has been found, however, that only a small percentage of cellulose, namely at most about 40/0, go into solution and that the heat required to produce the solution also causes more profound decomposition of at least a larger proportion of the cellulose, which causes the Strength of the thread produced therefrom is very unfavorable.

   It has therefore been proposed, in order to produce more suitable and higher percentage cellulose solutions by means of zinc chloride, to first treat the cellulose vigorously with oxidizing bleaches before dissolving it; however, such a process is not very suitable, since the cellulose, although higher percent solutions are obtained, also easily undergoes too extensive a change in that oxycellulose is formed, so that those produced from a solution prepared in this way
 EMI1.2
 brings, whereby the cellulose prepared in this way was also possible without the use of higher temperatures and without chemical changes in a concentrated zinc chloride solution in larger quantities (80% and more) than before,

   can be dissolved, so that such a solution is particularly suitable for producing solid artificial silk threads that can be dyed without the use of stain. Spun-off cellulose, which has been digested according to the process of patent no. 8596 and has a dry content of about 80 kg
 EMI1.3
   has gotten and fadenxifhend.



   The essence and novelty of the present invention of the production of spinnable solutions consists in the fact that the cellulose prepared according to patent no. 8596 is dissolved in concentrated zinc chloride liquor at a low temperature excluding decomposition, instead of the usual cellulose in hot zinc chlorine liquor as previously, but none spinnable solutions were achieved.

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

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Celluloselösungen, dadurch gekennzeichnet, dass man Cellulose, die nach dem Verfahren des Patentes Nr. 8596 vorbereitet ist, in der Kälte in Chlorzinklösunglöst. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of cellulose solutions, characterized in that cellulose, which has been prepared according to the process of patent no. 8596, is dissolved in zinc chloride solution in the cold. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT11066D 1899-09-28 1899-10-02 Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. AT11066B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT11066D AT11066B (en) 1899-09-28 1899-10-02 Process for the production of high-percentage solutions of cellulose in chlorzinc solutions.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8596T 1899-09-28
AT11066D AT11066B (en) 1899-09-28 1899-10-02 Process for the production of high-percentage solutions of cellulose in chlorzinc solutions.

Publications (1)

Publication Number Publication Date
AT11066B true AT11066B (en) 1903-03-10

Family

ID=25594123

Family Applications (1)

Application Number Title Priority Date Filing Date
AT11066D AT11066B (en) 1899-09-28 1899-10-02 Process for the production of high-percentage solutions of cellulose in chlorzinc solutions.

Country Status (1)

Country Link
AT (1) AT11066B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150377338A1 (en) * 2013-02-22 2015-12-31 Magna Powertrain Ag & Co Kg Gearbox housing and method for producing a gearbox housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150377338A1 (en) * 2013-02-22 2015-12-31 Magna Powertrain Ag & Co Kg Gearbox housing and method for producing a gearbox housing

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