CH198139A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH198139A
CH198139A CH198139DA CH198139A CH 198139 A CH198139 A CH 198139A CH 198139D A CH198139D A CH 198139DA CH 198139 A CH198139 A CH 198139A
Authority
CH
Switzerland
Prior art keywords
azo dye
aqueous solution
ethyl
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 CH198139A publication Critical patent/CH198139A/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

Landscapes

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

Description

  

      Teilahren    zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen, in Form eines     Alkalisalzes    in Wasser  löslichen     Azofarbstoff    erhält, wenn man       diazotiertes        4-Nitroaminobenzol    mit der     wIs-          ,serigen    Lösung des     Natriumsalzes    des  <B>N-</B>     (Ätliyl-ss-tllioschwefeleäureäthyl)-amino-          benzols    vereinigt.

   Der Farbstoff bildet in  trockenem Zustande ein braunes Pulver, das  sich in     oraanischen    Lösungsmitteln, wie     Ace-          ion,        Essigsäureäthylester,    und in Wasser mit  roter Farbe löst.

   Er färbt     Acetatkunstseicle     aus wässeriger Lösung in echten     sellarlac'h-          roten        Tönen.   <B>.</B>     Beispiel:     <B>13,8</B> Teile     4-Nitroaminobenzol    werden mit  <B>7</B> Gewichtsteilen     Natriumnitrit    und Salzsäure  unter Zusatz von Eis in bekannter Weise       diazotiert    und die erhaltene     Diazolösung    mit       üiner    Lösung, enthaltend<B>28,3</B> Teile des     Na-          triumsalzes    des     N-(Athyl-ss-thiosohwefel-          säureätl,

  Yl)-aminobenzol,s,    das man erhält  durch Umsetzung von N-Äthyl-ss-bromätliyl)-         aminobenzol    mit     Natriumthiosulfa#    in kochen  der wässeriger     A.cetonlösung,    vereinigt. Man  führt die Kupplung durch Zusatz von     Na-          triumacetat    zu Ende, fällt den Farbstoff falls  nötig durch Zugabe von     Natriumehlorid     völlig aus, filtriert und wäscht neutral.



      Part of 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 if diazotized 4-nitroaminobenzene is mixed with the aqueous solution of the sodium salt of the <B> N- </B> (Ätliyl-ss- tllioschwefeleäureäthyl) amino benzene combined.

   When dry, the dye forms a brown powder which dissolves in organic solvents such as acetone, ethyl acetate, and in water with a red color.

   He dyes acetate plastic from aqueous solution in genuine sellarlac'h red tones. <B>. </B> Example: <B> 13.8 </B> parts of 4-nitroaminobenzene are diazotized in a known manner with <B> 7 </B> parts by weight of sodium nitrite and hydrochloric acid with the addition of ice, and the resulting diazo solution with a solution containing <B> 28.3 </B> parts of the sodium salt of N- (ethyl-ss-thiosohulfuric acid ethyl,

  Yl) aminobenzene, which is obtained by reacting N-ethyl-ss-bromätliyl) aminobenzene with sodium thiosulfa in boiling the aqueous acetone solution, combined. The coupling is completed by adding sodium acetate, if necessary the dye is completely precipitated by adding sodium chloride, filtered and washed neutral.

Claims (1)

<B>PATENTANSPRUCH:</B> -Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man azotiertes 4-Nitroaminobenzol mit der wäs- oerigen Lösung des Natriumsalzes des <B>N-</B> (Athyl-fl-thios-chwefelsäureäthyl)-amino- benzols vereinigt. <B> PATENT CLAIM: </B> -Process for the production of an azo dye, characterized in that azoic 4-nitroaminobenzene is mixed with the aqueous solution of the sodium salt of the <B> N- </B> (ethyl-fl- thios-sulfuric acid ethyl) -amino benzene combined. Der Farbstoff bildet in trockenem Zu stande ein braunes Pulver, das sich in orga nischen Lösungsmitteln, wie Aceton, Essig- ,gäureätliyle,ster, und in Wasser mit roter Farbe löst, Er färbt Acetatkunstseide aus wässeriger Lösung in echten scharlachroten Tönen. When dry, the dye forms a brown powder that dissolves in organic solvents such as acetone, acetic, gic acid ethyls, ster, and in water with a red color. It dyes acetate artificial silk from aqueous solution in real scarlet shades.
CH198139D 1937-02-03 1937-02-03 Process for the preparation of an azo dye. CH198139A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH198139A true CH198139A (en) 1938-06-15

Family

ID=4441195

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198139D CH198139A (en) 1937-02-03 1937-02-03 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH198139A (en)

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