AT110866B - Process for the preparation of yellow sulfur dyes. - Google Patents

Process for the preparation of yellow sulfur dyes.

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Publication number
AT110866B
AT110866B AT110866DA AT110866B AT 110866 B AT110866 B AT 110866B AT 110866D A AT110866D A AT 110866DA AT 110866 B AT110866 B AT 110866B
Authority
AT
Austria
Prior art keywords
preparation
sulfur dyes
yellow
yellow sulfur
sulfur
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ig Farbenindustrie Ag
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.)
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Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Application granted granted Critical
Publication of AT110866B publication Critical patent/AT110866B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung gelber   Schwefelfarbstoffe.   



   Es wurde gefunden, dass man beim Verschmelzen von 3-Nitro-oder 3-Amino-4-azetyltoluidin mit zwei oder mehr Molekülen Benzidin und Schwefel zu gelben Schwefelfarbstoffen gelangt, die sich durch klare griinstiehige Nuance und sehr gute Kocheehtheit auszeichnen. 



   Beispiel : 8.5 Gewichtsteile 3-Amino-4-azettoluid, 47.5 Gewichtsteile Benzidin und 112 Gewichtsteile Schwefel werden mehrere Stunden von 180 bis   26 (T C erhitzt.   Die gemahlene Schmelze wird mit Sehwefelnatrium gelöst, der Farbstoff mit   Säuren ausgefällt,   filtriert und getrocknet. Der so als gelbes Pulver erhaltene Farbstoff färbt Baumwolle aus sehwefelnatriumhaltigem Bade in   gelbbraunen   Tönen an, die beim Trocknen,   Dämpfen oder Absäuel'l1   in ein klare grünstichiges Gelb übergehen. Nimmt man in diesem Beispiel die äquivalente Menge 3-Nitro-4-azettoluid. so erhält man einen   ähnlichen   Farbstoff. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of yellow sulfur dyes.



   It has been found that when 3-nitro- or 3-amino-4-acetyltoluidine is fused with two or more molecules of benzidine and sulfur, yellow sulfur dyes are obtained, which are distinguished by a clear greenish shade and very good boiliness.



   Example: 8.5 parts by weight of 3-amino-4-azettoluide, 47.5 parts by weight of benzidine and 112 parts by weight of sulfur are heated for several hours from 180 to 26 (TC). The ground melt is dissolved with sodium sulfate, the dye is precipitated with acids, filtered and dried The dye obtained as a yellow powder stains cotton from a bath containing sodium sulphide in yellow-brown shades, which turn into a clear greenish yellow when dried, steamed or peeled off. In this example, if the equivalent amount of 3-nitro-4-azettoluide is obtained a similar dye.

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

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung gelber Schwefelfarbstoffe, darin bestehend, dass man 3-Nitro-oder 3-Amino-4-azetyltoluidin mit Schwefel bei Gegenwart von zwei oder mehr Molekülen Benzidin auf höhere Temperaturen erhitzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of yellow sulfur dyes, consisting in heating 3-nitro- or 3-amino-4-acetyltoluidine with sulfur in the presence of two or more molecules of benzidine to higher temperatures. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT110866D 1926-08-17 1927-08-12 Process for the preparation of yellow sulfur dyes. AT110866B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE110866X 1926-08-17

Publications (1)

Publication Number Publication Date
AT110866B true AT110866B (en) 1928-10-10

Family

ID=5652295

Family Applications (1)

Application Number Title Priority Date Filing Date
AT110866D AT110866B (en) 1926-08-17 1927-08-12 Process for the preparation of yellow sulfur dyes.

Country Status (1)

Country Link
AT (1) AT110866B (en)

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