CH199962A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH199962A
CH199962A CH199962DA CH199962A CH 199962 A CH199962 A CH 199962A CH 199962D A CH199962D A CH 199962DA CH 199962 A CH199962 A CH 199962A
Authority
CH
Switzerland
Prior art keywords
azo dye
ethyl
aqueous solution
preparation
dye
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 CH199962A publication Critical patent/CH199962A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes
    • C09B29/0801—Amino benzenes containing acid groups, e.g. COOH, SO3H, PO3H2, OSO3H, OPO3H2; SO2NHSO2R or salts thereof, R being hydrocarbonyls
    • C09B29/0803—Amino benzenes containing acid groups, e.g. COOH, SO3H, PO3H2, OSO3H, OPO3H2; SO2NHSO2R or salts thereof, R being hydrocarbonyls containing SO3H, OSO3H
    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>198139.</B>    Verfahren zur     Rerstellung    eines     Azofarbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen, in Form eines     Alkalisalzes    in Wasser  löslichen     Azofarbstoff    erhält, wenn man     di-          azotiertes        4-Nitro-'2)-chloraminobenzol    mit der  wässerigen Lösung des     Natriumsalzes    des       N-(Äthyl-ss-thiosellweielsäureäthyl)        -amino-          benzols    vereinigt.

   Der Farbstoff bildet in  trockenem Zustande ein     rotbraunes    Pulver,  das sich in organischen Lösungsmitteln, wie       Aceton,        Essigsäureäthylester,    und in Wasser  mit rubinroter Farbe löst. Er färbt     Acetat-          kunstseide    aus wässeriger Lösung in echten  rubinroten Tönen.  



  <I>Beispiel:</I>  <B>17,2</B> Teile 4<B>-</B>     Nitro   <B>-</B> 2<B>-</B>     chloraminobenzol     werden mit<B>7</B>     Gewichtsteilen        Natriumnitrit     und Salzsäure unter Zusatz von Eis in be  kannter Weise     diazotiert    und die erhaltene       Diazolösung    mit einer Lösung, enthaltend  <B>28,3</B> Teile des     Natriumsalzes    des     N-(Äthyl-          ss-thioschwefelsb,-areä,thyl)-a,minobenzols,    das  man erhält durch Umsetzung von     N-(Ätliyl-          ss-bromäthyl)

  -aminobenzol    mit Natriumthio-         sulfat    in kochender wässeriger     Acetonlösung,     vereinigt. Man führt die Kupplung durch  Zusatz von     Natriumacetat    zu Ende, fällt den  Farbstoff, falls nötig, durch Zugabe von     Na-          triumehlorid    völlig aus, filtriert und wäscht  neutral.



  Additional patent to main patent no. <B> 198139. </B> Process for the preparation of an azo dye. It has been found that a valuable azo dye which is soluble in water in the form of an alkali salt is obtained when diacotated 4-nitro-2) chloraminobenzene is mixed with the aqueous solution of the sodium salt of N- (ethyl-ss-thiosellellar acid ethyl) -amino- benzene combined.

   When dry, the dye forms a red-brown powder which dissolves in organic solvents such as acetone, ethyl acetate, and in water with a ruby red color. It dyes acetate rayon from an aqueous solution in real ruby red tones.



  <I> Example: </I> <B> 17.2 </B> Parts 4 <B> - </B> Nitro <B> - </B> 2 <B> - </B> chloraminobenzene are mixed with 7 parts by weight of sodium nitrite and hydrochloric acid are diazotized in a known manner with the addition of ice, and the diazo solution obtained is diazotized with a solution containing 28.3 parts of the sodium salt of N- (ethyl) -thiosulphureb, -areä, thyl) -a, minobenzene, which is obtained by reacting N- (Ätliyl- ss-bromoethyl)

  -aminobenzene with sodium thiosulphate in boiling aqueous acetone solution, combined. The coupling is completed by adding sodium acetate, the dye is precipitated completely, if necessary, by adding sodium chloride, filtered and washed until neutral.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di- azotiertes 4-Nitro-2-chloraminobenzol mit der wässerigen Lösung des Natriumsalzes des N-(Athyl-fl-thioschwefelsäureäthyl) <B>-</B> amino- benzols vereinigt. Der Farbstoff bildet in trockenem Zu stande ein rotbraunes Pulver, das sieh in organischen Lösungsmitteln, wie Aceton, Essigsä,ureätliylester, und in Wasser mit rubinroter Farbe löst. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotized 4-nitro-2-chloraminobenzene is mixed with the aqueous solution of the sodium salt of N- (ethyl-fl-thiosulfuric acid ethyl) amino - benzene united. When dry, the dye forms a red-brown powder which dissolves in organic solvents such as acetone, acetic acid, ureätliylester, and in water with a ruby red color. Er färbt Acetatkunst- seide aus wässeriger Lösung in ecliten rubin roten Tönen. He dyes acetate artificial silk from an aqueous solution in eclite ruby red tones.
CH199962D 1937-02-03 1937-02-03 Process for the preparation of an azo dye. CH199962A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH199962T 1937-02-03
CH198139T 1937-02-03

Publications (1)

Publication Number Publication Date
CH199962A true CH199962A (en) 1938-09-15

Family

ID=25723072

Family Applications (1)

Application Number Title Priority Date Filing Date
CH199962D CH199962A (en) 1937-02-03 1937-02-03 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH199962A (en)

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