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AT60450B - Process for producing high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid. - Google Patents

Process for producing high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid.

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Publication number
AT60450B
AT60450B AT60450DA AT60450B AT 60450 B AT60450 B AT 60450B AT 60450D A AT60450D A AT 60450DA AT 60450 B AT60450 B AT 60450B
Authority
AT
Austria
Prior art keywords
viscose
sulfuric acid
gloss
threads
films
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ver Kunstseidefabriken A G
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 Ver Kunstseidefabriken A G filed Critical Ver Kunstseidefabriken A G
Application granted granted Critical
Publication of AT60450B publication Critical patent/AT60450B/en

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Description

  

   <Desc/Clms Page number 1> 
 



    Verfahren zur Herstellung hochglänzender Fäden, Films und dgl. aus Viskose mittels eines Spinnbades aus gesättigter Salzlösung und Schwefelsäure.   
 EMI1.1 
 setzt man demselben Säure zu, so erhält man, wie Versuche gezeigt haben, nicht in jedem Fall einen brauchbaren Faden. 
 EMI1.2 
 hisulfat auf, so dass der Gehalt an freier Schwefelsäure etwa    : zozo   beträgt (siehe Patentschrift Nr. 33678), so bewirkt ein solches Spinnbad, wie Versuche ergeben haben, eine sofortige Umsetzung der Viskose in wasserunlösliches Zellulosellydrat, ohne dass aber der Faden glänzend wird. 



   Nimmt man den   Schwefelsäurezl1satz   zu gesättigter   Natriamsulfatlösnng   geringer, z.   B. 6 bis 7 , so   tritt zwar keine Umsetzung der Viskose in wasserunlösliches Zellulosehydrat mehr ein, sondern nur ein Aussalzen der Viskose. Es ergeben sich aber Schwefelabscheidungen in Form eines   bläulichen   Schillers in den obersten Schichten des Produktes. 



  Löst man den Schwefel heraus. ho bleiben matte Stellen zurück, die den Glanz des Endproduktes verringern. 



     Ein Ansäuern   von gesättigter Salzlösung mit nur geringem Schwefelsäurezusatz 
 EMI1.3 
 auch   keinerlei Schwefelausscheidungen   auf der Oberfläche des Produktes bedingt. 



   Um die Umsetzung des letzteren in wasserunlösliches Zellulosehydrat zu bewirken, wird es der üblichen   Nachbehandlung unterworfen (Erwärmen, Behandlung   in einem Kochsalz-Sulfhydratbad oder   dgl.).   



   Das gewonnene Endprodukt ist hochglänzend, fest und elastisch. 

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



   <Desc / Clms Page number 1>
 



    Process for producing high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid.
 EMI1.1
 if acid is added to it, as experiments have shown, a usable thread is not always obtained.
 EMI1.2
 Hisulfate, so that the content of free sulfuric acid is about: zozo (see patent specification No. 33678), such a spinning bath, as experiments have shown, causes an immediate conversion of the viscose into water-insoluble cellulose allydrate without the thread becoming shiny.



   If the sulfuric acid addition to saturated sodium sulfate solution is reduced, e.g. B. 6 to 7, the viscose is no longer converted into water-insoluble cellulose hydrate, but only the viscose is salted out. However, there are sulfur deposits in the form of a bluish shimmer in the top layers of the product.



  Dissolve the sulfur. dull areas remain, which reduce the gloss of the end product.



     Acidification of saturated salt solution with only a small amount of sulfuric acid added
 EMI1.3
 no sulfur precipitates on the surface of the product.



   In order to bring about the conversion of the latter into water-insoluble cellulose hydrate, it is subjected to the usual post-treatment (heating, treatment in a sodium chloride-sulfhydrate bath or the like).



   The end product obtained is high-gloss, firm and elastic.

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

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur herstellung hochglänzender Fäden, Films und dgl. aus Viskose mittels eines Spinnbades aus gesättigter Salzlösung und Schwefelsäure, dadurch gekennzeicbiyet. EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid, marked thereby. EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT60450D 1911-06-26 1912-04-23 Process for producing high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid. AT60450B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE60450X 1911-06-26

Publications (1)

Publication Number Publication Date
AT60450B true AT60450B (en) 1913-08-11

Family

ID=5630470

Family Applications (1)

Application Number Title Priority Date Filing Date
AT60450D AT60450B (en) 1911-06-26 1912-04-23 Process for producing high-gloss threads, films and the like from viscose by means of a spinning bath made from saturated salt solution and sulfuric acid.

Country Status (1)

Country Link
AT (1) AT60450B (en)

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