AT113985B - Process for the production of brown colorations on cellulose esters and ethers. - Google Patents

Process for the production of brown colorations on cellulose esters and ethers.

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Publication number
AT113985B
AT113985B AT113985DA AT113985B AT 113985 B AT113985 B AT 113985B AT 113985D A AT113985D A AT 113985DA AT 113985 B AT113985 B AT 113985B
Authority
AT
Austria
Prior art keywords
ethers
cellulose esters
production
colorations
brown
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.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Application granted granted Critical
Publication of AT113985B publication Critical patent/AT113985B/en

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  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Coloring (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung brauner Färbungen auf   Celluloseestern und-äthern.   
 EMI1.1 
 
 EMI1.2 
 
In Formel l) bedeuten 2 X Nitrogruppen, das 3. X eine Karboxylgruppe. In Formel   2)   stellen 2 X Nitrogruppen, das 3. X einen beliebigen Substituenten dar. Freie Sulfogruppen sollen in der Formel ausgeschlossen sein. Daneben können die Farbstoffe noch andere Gruppen wie beispielsweise OH, NH2, CH3 usw. enthalten. Es war in keiner Weise vorauszusehen, dass diese Farbstoffe kräftige Färbungen auf Azetylzellulose ergeben würden, besonders deshalb nicht, weil die analogen Farbstoffe ohne eine Karboxylgruppe nicht oder praktisch unbrauchbar auf Azetatseide ziehen. 



   Die Farbstoffe können z. B. in der Weise hergestellt werden, dass man Dinitrohalogenaryle bzw. 



  Dinitrohalogenarylkarbonsäuren, deren Halogen austauschbar ist, mit unsulfierten Amidodiphenylaminen bzw.   Amidodiphenylaminkarbonsäuren   zweckmässig in Gegenwart von säurebindenden Mitteln kondensiert. 



   Beispiele : 
 EMI1.3 
 
 EMI1.4 
 

 <Desc/Clms Page number 2> 

 enthält, in der üblichen Weise mit oder ohne Zusatz von Salzen oder Säuren der Sehutzkolloiden 3/4 bis 1 Stunde lang bei   60-70  C   gefärbt. Die erhaltene kräftige rotbraun Färbung besitzt gute Echtheiteigenschaften. 



   2. 1 kg Azetatseide wird in der im Beispiel 1 beschriebenen Weise mit 20   g   des Farbstoffes 
 EMI2.1 
 gefärbt. Man erhält ein Gelbbraun von gleichfalls guten Echtheitseigenschaften. 



   Ähnliche Färbungen werden mit Farbstoffen folgender Konstitution erzielt : 
 EMI2.2 




   <Desc / Clms Page number 1>
 



  Process for the production of brown colorations on cellulose esters and ethers.
 EMI1.1
 
 EMI1.2
 
In formula l), 2 X denotes nitro groups, the 3rd X a carboxyl group. In formula 2), 2 X represent nitro groups, the 3rd X represents any substituent. Free sulfo groups should be excluded from the formula. The dyes can also contain other groups such as OH, NH2, CH3, etc. It was in no way to be foreseen that these dyes would give strong colorations on acetyl cellulose, especially not because the analogous dyes without a carboxyl group do not, or are practically unusable, pull on acetate silk.



   The dyes can e.g. B. be prepared in such a way that one Dinitrohalogenaryle or



  Dinitrohaloarylcarboxylic acids, the halogen of which is exchangeable, condensed with unsulfated amidodiphenylamines or amidodiphenylamine carboxylic acids, advantageously in the presence of acid-binding agents.



   Examples:
 EMI1.3
 
 EMI1.4
 

 <Desc / Clms Page number 2>

 contains, colored in the usual way with or without the addition of salts or acids of the protective colloids for 3/4 to 1 hour at 60-70 C. The strong red-brown coloration obtained has good fastness properties.



   2. 1 kg of acetate silk is in the manner described in Example 1 with 20 g of the dye
 EMI2.1
 colored. A yellow-brown with equally good fastness properties is obtained.



   Similar colorations are achieved with dyes of the following constitution:
 EMI2.2


 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung brauner Färbungen auf Zelluloseestern und-äthern, dadurch gekennzeichnet, dass man zum Färben solche von freien Sulfogruppen freie Farbstoffe verwendet, welche durch Kondensation von p-Aminodiphenylamin einschliesslich seiner Homologen oder Substitutionsprodukte mit Dinitrohalogenarylen der allgemeinen Formel EMI2.3 erhalten werden können, wobei mindestens 2 X Nitrogruppen sind, während das 3. X einen beliebigen Substituenten darstellt, und der fertig gebildete Farbstoff wenigstens eine Karboxylgruppe enthält. PATENT CLAIM: Process for producing brown dyeings on cellulose esters and ethers, characterized in that those dyes free of free sulfo groups are used for dyeing which are obtained by condensation of p-aminodiphenylamine including its homologues or substitution products with dinitrohalogenoaryls of the general formula EMI2.3 can be obtained, where at least 2 X are nitro groups, while the 3rd X represents any substituent, and the finished dye contains at least one carboxyl group.
AT113985D 1926-10-18 1927-10-07 Process for the production of brown colorations on cellulose esters and ethers. AT113985B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE113985X 1926-10-18

Publications (1)

Publication Number Publication Date
AT113985B true AT113985B (en) 1929-08-10

Family

ID=29276490

Family Applications (1)

Application Number Title Priority Date Filing Date
AT113985D AT113985B (en) 1926-10-18 1927-10-07 Process for the production of brown colorations on cellulose esters and ethers.

Country Status (1)

Country Link
AT (1) AT113985B (en)

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