CH211809A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211809A
CH211809A CH211809DA CH211809A CH 211809 A CH211809 A CH 211809A CH 211809D A CH211809D A CH 211809DA CH 211809 A CH211809 A CH 211809A
Authority
CH
Switzerland
Prior art keywords
azo dye
red
preparation
dye
diazo
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH211809A publication Critical patent/CH211809A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/18—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group
    • C09B43/20—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
    • C09B43/22—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters having the carboxylic group directly attached to an aromatic carbocyclic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Zusatzpatent zum     Ilau-ptpatent        Nr.   <B>208950.</B>    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       Äthyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amiiio-4-nitrobenzol-2-methyl-          sulfons    und     Phthalsäureanhydrid    derart auf  einander einwirken     lässt,

          dass    der saure     Phthal-          säureester    des     Äthyloxäthylaminobenzols    ge  bildet wird und der     Diazorest    in     4-Stellung     zur tertiären     Aminogruppe    eintritt.  



  Der so erhaltene Farbstoff bildet ein  dunkles Pulver, das sich in Form eines     Alkali-          salzes    in Wasser mit rotvioletter Farbe löst  und     Acetatkunstseide    ans     wässriger    Lösung  in rotvioletten Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus<B>216</B>  Teilen     1-Amino-4-nitrobenzol-2-methylsulfon     herstellt, trägt     inan   <B>313</B> Teile des sauren       Phthalsäureesters    des     A-thyloxäthylamino-          betizols,    erhalten durch Umsetzung von     Phthal-          säureanhydrid    mit     Äthyloxäthylaminobenzol,     der in Form einer     wässrigen    Lösung eines       Ammoniumsalzes    vorliegt, ein.

   Man führt die  Kupplung durch längeres Rühren zu Ende    und kann auch allenfalls neutralisierende       31ittel,    wie z. B.     Natriumacetat,    zugeben. Der  Farbstoff wird dann     abfiltriert    und etwas mit  Wasser gewaschen. Man verrührt ihn dann  mit einer     Natriumehloridlösung    und stellt mit       Natriumcarbonat    oder mit Ammoniak auf den       Neutralpunkt.  



  Additional patent to Ilau-ptpatent no. <B> 208950. </B> Process for the production of an azo dye. It has been found that a new, valuable azo dye is obtained if ethyloxethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone and phthalic anhydride, act on one another in such a way that

          that the acidic phthalic acid ester of Äthyloxäthylaminobenzols is formed and the diazo radical occurs in the 4-position to the tertiary amino group.



  The dye obtained in this way forms a dark powder which dissolves in the form of an alkali salt in water with a red-violet color and colors acetate artificial silk in the aqueous solution in red-violet tones.



  <I> Example: </I> The diazo solution which is produced from <B> 216 </B> parts of 1-amino-4-nitrobenzene-2-methylsulfone contains <B> 313 </B> parts of the acidic phthalic acid ester of A-thyloxäthylamino- betizols, obtained by reacting phthalic anhydride with Ethyloxäthylaminobenzene, which is in the form of an aqueous solution of an ammonium salt, a.

   The coupling is completed by prolonged stirring and neutralizing agents, such as e.g. B. sodium acetate, add. The dye is then filtered off and washed a little with water. It is then stirred with a sodium chloride solution and set to neutral with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Äthyloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-4-nitrobenzol-2-methyl- sulfons Lind Phtbalsäureanhydrid derart auf einander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone and phthalic anhydride are allowed to act on one another in such a way that dass der saure Phthal- säureester des Äthyloxäthylaminobenzols ge bildet wird und der Diazorest in 4-Stellung zur tertiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Alkalisalzes in Wasser mit rotvioletter Farbe löst und Acetatkunstseide aus wässriger Lö sung in rotvioletten Tönen färbt. that the acidic phthalic acid ester of Äthyloxäthylaminobenzols is formed and the diazo radical occurs in the 4-position to the tertiary amino group. The dye obtained in this way forms a dark powder which dissolves in the form of an alkali salt in water with a red-violet color and dyes acetate artificial silk from an aqueous solution in red-violet tones.
CH211809D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211809A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211809T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211809A true CH211809A (en) 1940-10-15

Family

ID=25724600

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211809D CH211809A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211809A (en)

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