CH195221A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH195221A
CH195221A CH195221DA CH195221A CH 195221 A CH195221 A CH 195221A CH 195221D A CH195221D A CH 195221DA CH 195221 A CH195221 A CH 195221A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dihydro
nitro
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH195221A publication Critical patent/CH195221A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstof%s.       Das hauptpatent betrifft ein Verfahren  zur Herstellung eines neuen     Azofarbstoffes,     bei dem man die     Diazoverbindung    von       1-iNlethyl-3-nitro-4-aminobenzol    mit     5,6-Di-          liydro-1,3-diogybenzol    vereinigt.  



  Es wurde nun gefunden, dass man eben  falls einen neuen wertvollen     Azofarbstoff     von gleich guten Eigenschaften erhält, wenn  man die     Diazoverbindung    von     1-Chlor-3-          nitro-4-a.minobenzol    mit     5,6-Dihydro-1,3-di-          ogybenzol    vereinigt.  



  Der so erhaltene Farbstoff eignet sich  besonders zum Färben von     Acetatseide,        Zel-          lulosee3ter-    und     -ätherlacken    oder von     Iiunst-          masseri        verschiedenster    Art, z. B.     Polyvinyl-          verbindungen    und Harnstoff- oder Phenol  formaldehydharzen. Die Färbungen sind sehr  lichtecht.  



  <I>Beispiel:</I>       1VIan    vereinigt die     Diazolösung    von     173     'feilen     1-Chlor-3-nitro-4-aminobenzol    mit    einer schwach alkalischen Lösung von 120       Teilen        5;6-Dihydro-1,3-,diogybenzol.    Dann  saugt man den     entstandenen    Farbstoff ab  und trocknet ihn. Er färbt     Acetatseide    in  gelben Tönen von     vorziiglicher    Lichtechtheit.



  Process for the preparation of an azo dye% s. The main patent relates to a process for the production of a new azo dye in which the diazo compound of 1-iNlethyl-3-nitro-4-aminobenzene is combined with 5,6-dihydro-1,3-diogybenzene.



  It has now been found that a new valuable azo dye with equally good properties is obtained if the diazo compound of 1-chloro-3-nitro-4-a.minobenzene is used with 5,6-dihydro-1,3-di- ogybenzene united.



  The dyestuff obtained in this way is particularly suitable for dyeing acetate silk, cellulose ter- and ether varnishes or various kinds of artificial materials, e. B. polyvinyl compounds and urea or phenol formaldehyde resins. The dyeings are very lightfast.



  <I> Example: </I> 1VIan combines the diazo solution of 173 parts of 1-chloro-3-nitro-4-aminobenzene with a weakly alkaline solution of 120 parts of 5; 6-dihydro-1,3-, diogybenzene. Then you suck off the resulting dye and dry it. It dyes acetate silk in yellow shades of excellent lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Ilerstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet. dass man die Diazoverbindung von 1-Chlor-3- nitro-4-aminobenzol mit 5;6-Dihydro-1,3-di- o-,-,ybenzol vereinigt. Der Farbstoff färbt Acetatseide in gel ben, sehr lichtechten Tönen. Er ist auch zum Färben von Zelluloseester- und -ätherlacken. sowie von gunstmaesen geeignet. PATENT CLAIM: Process for the production of a new azo dye, characterized. that the diazo compound of 1-chloro-3-nitro-4-aminobenzene is combined with 5; 6-dihydro-1,3-di- o -, -, ybenzene. The dye dyes acetate silk in yellow, very lightfast shades. It is also used for coloring cellulose ester and ether varnishes. as well as suitable for gunstmaesen.
CH195221D 1935-07-27 1936-06-09 Process for the preparation of an azo dye. CH195221A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE195221X 1935-07-27
CH192368T 1936-06-09

Publications (1)

Publication Number Publication Date
CH195221A true CH195221A (en) 1938-01-15

Family

ID=25722263

Family Applications (1)

Application Number Title Priority Date Filing Date
CH195221D CH195221A (en) 1935-07-27 1936-06-09 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH195221A (en)

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