AT42803B - Process for dyeing vegetable fibers with sulfur dyes. - Google Patents

Process for dyeing vegetable fibers with sulfur dyes.

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Publication number
AT42803B
AT42803B AT42803DA AT42803B AT 42803 B AT42803 B AT 42803B AT 42803D A AT42803D A AT 42803DA AT 42803 B AT42803 B AT 42803B
Authority
AT
Austria
Prior art keywords
vegetable fibers
sulfur dyes
dyeing vegetable
dyeing
sep
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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 DE1906213455D external-priority patent/DE213455C/de
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT42803B publication Critical patent/AT42803B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zum Färben von pflanzlichen Fasern mit Schwefelfarbstoffen. 



   Durch das   Stammpatent Nr. 35268   ist ein technisch sehr wichtiges Verfahren zum Färben der vegetabilischen Faser mit Schwefelfarbstoffen geschützt, das dadurch gekennzeichnet ist, dass man der in   üblicher   Weise mit Hülfe von Schwefelalkalien hergestellten Färbeflotte   Ammoniumsalze   zusetzt. Hierdurch wird der wesentliche Effekt erzielt, dass äusserst gleichmässige Färbungen, die in vielen Fällen auch noch tiefer und waschechter sind als die nach dein üblichen Färbeverfahren erhältlichen, gewonnen werden. Eine wissenschaftliche Erklärung für diesen Vorgang konnte bisher nicht gegehen werden.

   Eine weitere eingehende   Bearbeitung hat nun   das Ergebnis zu Tage gefördert,   dass   die günstige Wirkung der Ammoniumsalze anscheinend in erster Linie darauf beruht, dass durch sie das in dem schwefelalkalischen Färbebade stets enthaltene freie Alkali gebunden wird. Es hat sich   nämlich   gezeigt, dass man eine analoge Wirkung erzielt, wenn man die Ammoniumsalze durch andere Salze ersetzt, die, wie z. B. Natriumbicarbonat, Aluminiumacetat, Alaun, 
 EMI1.1 
 



    Als Kennzeichen dafür,   dass der Zusatz der oben erwähnten Agentien in hinreichendem   Masse   erfolgt ist, kann im allgemeinen der Umstand   dienen, dass die Färbeflotte deutlich   nach Schwefelwasserstoff riecht, ohne dass schon Ausfällung, des Farbstoffs bezw. der Lcukoverbindung eintritt. 



   Beispiel. 



   In einem   Färhobade   werden kochend gelöst : 
 EMI1.2 
 
<tb> 
<tb> 10% <SEP> Katigenindige <SEP> R <SEP> L <SEP> extra,
<tb> 10% <SEP> Schwefelnatrium,
<tb> 20% <SEP> Glaubersalz.
<tb> 
 Diese Lösung wird mit 5% Natriumbicarbonat versetzt. Darauf wird mit   dem Hanmwoll-   
 EMI1.3 
 In analoger Weise verfährt man bei Anwendung anderer der oben erwähnten Salze. 

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



   <Desc / Clms Page number 1>
 



  Process for dyeing vegetable fibers with sulfur dyes.



   The parent patent no. 35268 protects a technically very important process for dyeing vegetable fibers with sulfur dyes, which is characterized in that ammonium salts are added to the dye liquor prepared in the usual manner with the aid of alkaline sulfur. This has the essential effect that extremely even colorations, which in many cases are even deeper and more washable than those obtainable using your usual coloring process, are obtained. A scientific explanation for this process could not be given so far.

   A further detailed study has now brought to light the result that the beneficial effect of the ammonium salts is apparently based primarily on the fact that they bind the free alkali that is always contained in the alkaline sulfur dye bath. It has been shown that an analogous effect is achieved if the ammonium salts are replaced by other salts which, such as. B. Sodium bicarbonate, aluminum acetate, alum,
 EMI1.1
 



    The fact that the dye liquor clearly smells of hydrogen sulfide without any precipitation of the dye or the dye can generally serve as a sign that the above-mentioned agents have been added in sufficient quantities. the Lcuko connection occurs.



   Example.



   In a dye bath, the following are dissolved by boiling:
 EMI1.2
 
<tb>
<tb> 10% <SEP> Katigenindige <SEP> R <SEP> L <SEP> extra,
<tb> 10% <SEP> sulfur sodium,
<tb> 20% <SEP> Glauber's salt.
<tb>
 5% sodium bicarbonate is added to this solution. Then with the hemp wool
 EMI1.3
 An analogous procedure is used when using other salts mentioned above.

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

 

Claims (1)

PATENT-ANSPRUCH : Abänderung des Verfahrens des Stammpatentes Nr. 35263 zum Färben der pflanz- EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Modification of the process of the parent patent No. 35263 for dyeing the plant EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT42803D 1906-07-24 1909-10-18 Process for dyeing vegetable fibers with sulfur dyes. AT42803B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1906213455D DE213455C (en) 1906-07-24

Publications (1)

Publication Number Publication Date
AT42803B true AT42803B (en) 1910-06-25

Family

ID=5813309

Family Applications (1)

Application Number Title Priority Date Filing Date
AT42803D AT42803B (en) 1906-07-24 1909-10-18 Process for dyeing vegetable fibers with sulfur dyes.

Country Status (1)

Country Link
AT (1) AT42803B (en)

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