AT23907B - Process for the preparation of orange disazo dyes for wool. - Google Patents

Process for the preparation of orange disazo dyes for wool.

Info

Publication number
AT23907B
AT23907B AT23907DA AT23907B AT 23907 B AT23907 B AT 23907B AT 23907D A AT23907D A AT 23907DA AT 23907 B AT23907 B AT 23907B
Authority
AT
Austria
Prior art keywords
wool
preparation
orange
disazo dyes
dyes
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 DE1904163142D external-priority patent/DE163142C/de
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT23907B publication Critical patent/AT23907B/en

Links

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung orangefarbener Disazofarbstoffe für Wolle. 



   In der Stamm-Patentschrift Nr.   2 2 6 (i l wurde   ein Verfharen zur Darstellung von walkechten Disazofarbstoffen beschrieben, welches darin besteht, dass man   dio Tetrazo-   
 EMI1.1 
 5-pyrazolonkuppelt. 



   Es wurde nun gefunden, dass man durch Kuppeln der   Tetrazovcrbindungen der ge-   nannten Benzidin- bezw. Tolidin-m-disulfosäuren der Formeln : 
 EMI1.2 
 in beliebiger Reihenfolge mit 1 Molekül 1-Phenyl-3-methyl-5-pyrazolon und 1 Molekül ss-Naphtol zu orangefarbenen Wollfarbstoffen gelangt, die sich ebenfalls durch die   technisch     äusserst wichtige Eigenschaft auszeichnen, dass sie bereits   in direkter   Färbung gegen weisst'   Wolle und gegen weisse   Baumwolle wall, echt   sind. 



     Beispiel. 34#4 Teile Benzidindisulfosäure werden   in der bekannten Weise mit 
 EMI1.3 
 wird darauf unter Kühlung mit einer Lösung von 19 Teilen 1-Phenyl-3-methyl-5-pyrazolon in verdünnter Salzsäure versetzt und zu der so erhaltenen Mischung ein Überschuss von Natriumazetat zugesetzt. Nachdem die Bildung des Zwischenproduktes beendet ist, werden 
 EMI1.4 
 und der Farbstoff ill der   übliehen   Weise isoliert. Derselbe färbt Wolle orange. 



   DeranalogeFarbstoffausderTolidinidisulfosäurefärbtebenfallsWolleorange. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of orange disazo dyes for wool.



   In the parent patent no. 2 2 6 (i l a method for the preparation of walk-fast disazo dyes was described, which consists in that one dio tetrazo
 EMI1.1
 5-pyrazolone coupling.



   It has now been found that by coupling the tetrazo compounds of the benzidine or Tolidine-m-disulfonic acids of the formulas:
 EMI1.2
 in any order with 1 molecule of 1-phenyl-3-methyl-5-pyrazolone and 1 molecule of s-naphtol, orange-colored wool dyes are obtained, which are also characterized by the technically extremely important property that they are already in direct dyeing against white wool and against white cotton wall, are real.



     Example. 34 # 4 parts of benzidinedisulfonic acid are used in the known manner
 EMI1.3
 a solution of 19 parts of 1-phenyl-3-methyl-5-pyrazolone in dilute hydrochloric acid is then added, while cooling, and an excess of sodium acetate is added to the mixture thus obtained. After the formation of the intermediate product has ended, be
 EMI1.4
 and the dye isolated in the usual manner. The same dyes wool orange.



   The analogous dye from the tolidinidisulfonic acid also dyes wool orange.

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

Claims (1)

PATENT-ANSPRUCH : Abänderung des Verfahrens des Stamm-Patentes Nr. 22661 zur Darstellung orange- EMI1.5 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Modification of the procedure of the parent patent No. 22661 to display orange- EMI1.5 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT23907D 1904-10-31 1905-07-22 Process for the preparation of orange disazo dyes for wool. AT23907B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1904163142D DE163142C (en) 1904-10-31

Publications (1)

Publication Number Publication Date
AT23907B true AT23907B (en) 1906-04-25

Family

ID=5683419

Family Applications (1)

Application Number Title Priority Date Filing Date
AT23907D AT23907B (en) 1904-10-31 1905-07-22 Process for the preparation of orange disazo dyes for wool.

Country Status (1)

Country Link
AT (1) AT23907B (en)

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