AT36450B - Process for the preparation of monoazo dyes. - Google Patents

Process for the preparation of monoazo dyes.

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Publication number
AT36450B
AT36450B AT36450DA AT36450B AT 36450 B AT36450 B AT 36450B AT 36450D A AT36450D A AT 36450DA AT 36450 B AT36450 B AT 36450B
Authority
AT
Austria
Prior art keywords
preparation
monoazo dyes
sulfonic acids
dyes
amino
Prior art date
Application number
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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 DE1907198137D external-priority patent/DE198137C/de
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT36450B publication Critical patent/AT36450B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Monoazofarbstoffen. 



   Gegenstand des Stammpatentes Nr. 36215 ist ein Verfahren zur Darstellung von Monoazofarbstoffen, das in der   Kuppelung   der diazotierten   &alpha;-Naphtylaminsulfosäuren mit   1. 7-Aminonaphtol oder seinen Derivaten besteht und zu sehr gut deckenden und gut egalisierenden brauuen bis schwarzen Farbstoffen führt. 
 EMI1.1 
 getangt, wenn man das 1. 7-Aminonaphtol statt mit den   Diazonaphtalinsutfosäuren mit   den Diazoverbindungen aus den Sulfosäuren des p-Phenylendiamins, seiner Homologen oder Substitutionsprodukte kuppelt. 



   Beispiel. 



   Die in üblicher Weise aus 28, 6 Teilen des Natriumsalzes der p-Aminodiphenylaminsulfosiiuro (gewonnen durch Reduktion des ans p-Nitrochlorhenzolsulfosäure und Anilin erhältlichen Kondensationsproduktes) durch Diazotieren mit 7 kg Natriumnitrit bergestellte 
 EMI1.2 
 Natriumsalzes von   16/t : < y 1. 7-Aminonaphtol   eingetragen. Wenn die Kuppelung zu Ende ist, wird der   abgeschiedene   Farbstoff, erforderlichenfalls nach weiterem Aussalzen, abfiltriert und getrocknet. Er löst sich in Wasser mit blau violetter Farbe und färbt Wolle aus saurem Bade in grauen bis tiefschwarzen Tönen an   Hei   Ersatz der p-Aminodiphenylaminsulfosäure durch die analogen Verbindungen 
 EMI1.3 
 Nüancen. Die p-Phenylendiaminsulfosäure selbst liefert   braunshchigere   Farbstoffe. 



     Erset, zt man   das 1-Amino-7-naphtol durch seine in der Aminogruppe alkylierten Deri-   vaut (^,   wie Äthyl- oder Benzyl-1-amino-7-naphtol, so erhält man blauere Nüancen. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of monoazo dyes.



   The subject of the parent patent no. 36215 is a process for the preparation of monoazo dyes, which consists in the coupling of the diazotized α-naphthylamine sulfonic acids with 1,7-aminonaphtol or its derivatives and leads to very good covering and good leveling brown to black dyes.
 EMI1.1
 done when the 1. 7-aminonaphthol is coupled with the diazo compounds from the sulfonic acids of p-phenylenediamine, its homologues or substitution products instead of the diazonaphtalinsutfosäuren.



   Example.



   The prepared in the usual way from 28.6 parts of the sodium salt of p-aminodiphenylamine sulfonic acid (obtained by reducing the condensation product obtainable from p-nitrochlorhenzenesulfonic acid and aniline) by diazotization with 7 kg of sodium nitrite
 EMI1.2
 Sodium salt of 16 / t: <y 1. 7-aminonaphtol entered. When the coupling is over, the deposited dye, if necessary after further salting out, is filtered off and dried. It dissolves in water with a blue-violet color and dyes wool from an acid bath in gray to deep black shades
 EMI1.3
 Nuances. The p-phenylenediamine sulfonic acid itself provides brownish dyes.



     If the 1-amino-7-naphtol is replaced by its derivative alkylated in the amino group (^, such as ethyl- or benzyl-1-amino-7-naphtol, bluer shades are obtained.

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

 

Claims (1)

PATIENT-ANSPRUCH Abänderung des Verfahrens des Stammpatentes Nr. 36215 zur Darstellung von Monoazofarbstoffen, dadurch gekennzeichnet, dass man an Stelle der diazotierten x-Naphtyl- aniinsulfosäuren hier die Diazoverbindungon aus den Sulfosäuren des p-PhenylendiaTnins oder seiner Homologen und Substitutionsprodukte in alkalischer Lösung mit l-Amino- 7-naphtol oder seinen in der Aminogruppe alkylierten Derivaten vereinigt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATIENT CLAIM Modification of the process of the parent patent No. 36215 for the preparation of monoazo dyes, characterized in that, instead of the diazotized x-naphthyl aniine sulfonic acids, the diazo compound from the sulfonic acids of p-phenylenediamine or its homologues and substitution products in alkaline solution with l-amino 7-naphtol or its derivatives alkylated in the amino group. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT36450D 1907-03-09 1908-05-13 Process for the preparation of monoazo dyes. AT36450B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1907198137D DE198137C (en) 1907-03-09

Publications (1)

Publication Number Publication Date
AT36450B true AT36450B (en) 1909-03-10

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ID=5756791

Family Applications (1)

Application Number Title Priority Date Filing Date
AT36450D AT36450B (en) 1907-03-09 1908-05-13 Process for the preparation of monoazo dyes.

Country Status (1)

Country Link
AT (1) AT36450B (en)

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