CH145878A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145878A
CH145878A CH145878DA CH145878A CH 145878 A CH145878 A CH 145878A CH 145878D A CH145878D A CH 145878DA CH 145878 A CH145878 A CH 145878A
Authority
CH
Switzerland
Prior art keywords
dye
production
new dye
condensed
acid
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 CH145878A publication Critical patent/CH145878A/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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 143025.    Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass     mär    einen  neuen wertvollen Farbstoff erhält, wenn man  2     Mol    des Farbstoffes aus dianotierter     Meta-          nilsäure    und     a-Naphthylamin    mit einem     Mol          4..4'-Dinitrostilben-2.2'-disulfosäure    unter  Druck kondensiert und das erhaltene Kon  densationsprodukt mit einem     Oxydationsmit-          tel    behandelt.  



  Der neue Farbstoff. stellt getrocknet ein  dunkelbraunes Pulver dar, welches sich in  Wasser und verdünnten     Alkalien    mit  Iranger, in konzentrierter Schwefelsäure  mit stahlblauer Farbe löst und Baumwolle  in sehr licht- und     alkaliechten    rotorangen  Tönen anfärbt.  



       Beispiel:     Man beschickt einen     Rührautoklaven    mit  75 Teilen des     Azofarbstoffes    aus dianotierter       Metanilsäure    und     a-Naphthylamin,    43 Teilen       dinitrostilbendisulfosaurem    Natrium, 1000  Teilen Wasser und 1,00 Teilen Natronlauge    von 36      'RA-    Man erwärmt auf     12#0     und kon  densiert 6 Stunden bei dieser     Temperatur.     Nach dem     Erkalten    wird die Natronlauge mit  Säure abgestumpft und der ausgeschiedene  Farbstoff vollends     ausgesalzen,        abgenutscht     und gepresst.

   Der     Presskuchen    wird mit 600  Teilen Wasser von 50  angerührt und in  Gegenwart von     215    Teilen Natronlauge von  36      BA        mit    300 Teilen     Natriumhypochlorit-          lösung    enthaltend 13 % aktives Chlor zirka  1 Stunde bei 60-70  behandelt. Man lässt er  kalten, salzt vollends aus und scheidet den  Farbstoff wie üblich ab.



  <B> Additional patent </B> to the main patent No. 143025. Process for the production of a new dye. It has been found that a new valuable dye is obtained if 2 moles of the dye from dianotated metanilic acid and a-naphthylamine are condensed with one mole of 4..4'-dinitrostilbene-2.2'-disulfonic acid under pressure and the resulting condensation product treated with an oxidizing agent.



  The new dye. When dried, it is a dark brown powder that dissolves in water and dilute alkalis with Iranger, in concentrated sulfuric acid with a steel blue color and dyes cotton in very light and alkali-fast red-orange tones.



       Example: A stirred autoclave is charged with 75 parts of the azo dye made from dianotized metanilic acid and α-naphthylamine, 43 parts of sodium dinitrostilbene disulphonic acid, 1000 parts of water and 1.00 part of sodium hydroxide solution of 36 'RA- It is heated to 12 ° and condensed for 6 hours this temperature. After cooling, the sodium hydroxide solution is blunted with acid and the precipitated dye is completely salted out, suction filtered and pressed.

   The presscake is mixed with 600 parts of 50% water and treated in the presence of 215 parts of 36 BA sodium hydroxide solution with 300 parts of sodium hypochlorite solution containing 13% active chlorine at 60-70 for about 1 hour. It is left cold, completely salted out and the dye is separated off as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 2 Hol des Farbstoffes aus dianotierter Meta- nilsäure und a-Naphthylamin mit einem Hol 4.4'-Dinitrostilben-2.2'-disulfosäure unter Druck kondensiert und das erhaltene Kon densationsprodukt mit einem Oxydationsmit tel behandelt. PATENT CLAIM: Process for the production of a new dye, characterized in that 2 Hol of the dye from dianotized metanilic acid and a-naphthylamine is condensed with a Hol 4,4'-dinitrostilbene-2.2'-disulfonic acid under pressure and the condensation product obtained is condensed with an oxidation agent tel treated. Der neue Farbstoff stellt getrocknet ein dunklebraunes Pulver dar, welches sich in Wasser und verdünnten Alkalien' mit oranger, in konzentrierter Schwefelsäure mit stahlblauer Farbe löst und Baumwolle in sehr licht- und alkaliechten rotorangen Tönen anfärbt. The new dye is a dark brown powder when dried, which dissolves in water and dilute alkalis with orange, in concentrated sulfuric acid with a steel blue color and dyes cotton in very light and alkali-fast red-orange tones.
CH145878D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145878A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145878T 1929-03-16
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145878A true CH145878A (en) 1931-03-15

Family

ID=25714175

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145878D CH145878A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145878A (en)

Similar Documents

Publication Publication Date Title
CH145878A (en) Process for the production of a new dye.
CH145877A (en) Process for the production of a new dye.
CH145880A (en) Process for the production of a new dye.
CH145883A (en) Process for the production of a new dye.
CH145873A (en) Process for the production of a new dye.
CH145872A (en) Process for the production of a new dye.
CH145884A (en) Process for the production of a new dye.
CH145874A (en) Process for the production of a new dye.
CH145871A (en) Process for the production of a new dye.
CH145875A (en) Process for the production of a new dye.
CH145879A (en) Process for the production of a new dye.
CH145882A (en) Process for the production of a new dye.
CH145870A (en) Process for the production of a new dye.
CH145881A (en) Process for the production of a new dye.
CH145876A (en) Process for the production of a new dye.
CH145869A (en) Process for the production of a new dye.
CH203043A (en) Process for the production of a new dye of the anthraquinone series.
CH143025A (en) Process for the production of a new dye.
CH183118A (en) Process for the production of a new dye of the anthraquinone series.
CH97363A (en) Process for the preparation of a condensation product of the anthraquinone series which can be used as dye and dye intermediate.
CH106441A (en) Process for the production of a new indigoid dye.
CH101090A (en) Process for the production of an indigoid dye.
CH191418A (en) Process for the preparation of 4&#39;-oxyphenyl-4-aminopyrene.
CH101095A (en) Process for the production of an indigoid dye.
CH141317A (en) Process for the preparation of a brown vat dye.