CH199960A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH199960A
CH199960A CH199960DA CH199960A CH 199960 A CH199960 A CH 199960A CH 199960D A CH199960D A CH 199960DA CH 199960 A CH199960 A CH 199960A
Authority
CH
Switzerland
Prior art keywords
ethyl
azo dye
preparation
aqueous solution
red
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 CH199960A publication Critical patent/CH199960A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

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

   Der Farbstoff bildet in  trockenem Zustande ein dunkles Pulver, das  sich in organischen Lösungsmitteln, wie Ace  ton,     Essigsäureäthylester,    und in Wasser  mit rotvioletter Farbe löst. Er färbt Acetat  kunstseide aus wässeriger Lösung in echten  rotvioletten Tönen.  



  <I>Beispiel:</I>  _ 18,3 Teile     2,4-Dinitroaminobenzol    wer  den mit 7 Gewichtsteilen     Natriumnitrit    und  Salzsäure     unter    Zusatz von Eis in bekannter  Weise     diazotiert    und die erhaltene     Diazo-          lösung    mit einer Lösung,     enthaltend    28,3  Teile des     Natriumsalzes    des N - (Äthyl -     ss        -          thioschwefelsäureäthyl)    -     aminobenzols,    das  man erhält durch Umsetzung von N-(Äthyl-         ss-bromä,thyl)

  -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  triumchlorid völlig aus, filtriert und wäscht  neutral.



  <B> Additional patent </B> to main patent no. 198139. Process for the production 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 diazotized 2,4 - dinitroaminobenzene is mixed with the aqueous solution of the sodium salt of N - (ethyl ssthiosulfuric acid ethyl) - aminobenzene united.

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



  <I> Example: </I> _ 18.3 parts of 2,4-dinitroaminobenzene are diazotized in a known manner with 7 parts by weight of sodium nitrite and hydrochloric acid with the addition of ice, and the diazo solution obtained with a solution containing 28.3 parts of the sodium salt of N - (ethyl - ss - thiosulfuric acid ethyl) - aminobenzene, which is obtained by reacting N- (ethyl - ss-bromä, thyl)

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

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 2,4-Dinitroaminobenzol mit der wässerigen Lösung des Natriumsalzes des N-(Äthyl - ss - thioschwef elsäureäthyl) - amino- benzols vereinigt. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotised 2,4-dinitroaminobenzene is combined with the aqueous solution of the sodium salt of N- (ethyl - ss - thiosulfuric acid ethyl) - aminobenzene. Der Farbstoff bildet in trockenem Zu stande ein dunkles Pulver, das sich in organi schen Lösungsmitteln, wie Aceton, Essig- säureäthylester, und in Wasser mit rotviolet ter Farbe löst. Er färbt Acetatkunstseide aus wässeriger Lösung in echten rotvioletten Tönen. When dry, the dye forms a dark powder which dissolves in organic solvents such as acetone, ethyl acetate, and in water with a red-violet color. He dyes acetate silk from aqueous solution in real red-violet tones.
CH199960D 1937-02-03 1937-02-03 Process for the preparation of an azo dye. CH199960A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198139T 1937-02-03
CH199960T 1937-02-03

Publications (1)

Publication Number Publication Date
CH199960A true CH199960A (en) 1938-09-15

Family

ID=25723070

Family Applications (1)

Application Number Title Priority Date Filing Date
CH199960D CH199960A (en) 1937-02-03 1937-02-03 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH199960A (en)

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