CH145871A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145871A
CH145871A CH145871DA CH145871A CH 145871 A CH145871 A CH 145871A CH 145871D A CH145871D A CH 145871DA CH 145871 A CH145871 A CH 145871A
Authority
CH
Switzerland
Prior art keywords
new dye
red
dye
production
orange
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 CH145871A publication Critical patent/CH145871A/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)
  • Coloring (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 man einen neuen  wertvollen     Farbstoff    erhält, wenn man 2     Mol          4-Amino-3-methoxyazobenzol-3'-sulfosäuremit     einem     Mol    4.     4'-Dinitrostilberr-2,        2'-disulfo-          säure    unter Druck kondensiert und das er  haltene Kondensationsprodukt mit einem Oxy  dationsmittel behandelt.  



  Der neue     Farbstoff    stellt getrocknet ein  rotes Pulver dar, welches sich in Wasser  und verdünnten Alkalien mit orangeroter, in  konzentrierter Schwefelsäure mit grüner Farbe  löst und Baumwolle in sehr licht- und     alkali-          echten    rotorangen Tönen anfärbt  <I>Beispiel:

  </I>  Man beschickt einen     Rührautoklaven    mit  900 Teilen Wasser, 66 Teilen     4-amirro-3-metlr-          oxyazobenzol-3'-sulfosaurem    Natrium, herge  stellt durch Kuppeln von     diazotierter        Metanil-          säure    und     o-Anisidin-co-methansulfosäure    und       Verseifung    des erhaltenen     Azofarbstoffes,    47  Teilen p.     p'-dinitrostilben-0.0'disulfosaurem       Natrium und 130 Teilen Natronlauge von 36        B6.    Man erwärmt auf<B>130</B>   und kondensiert 6  Stunden bei dieser Temperatur.

       Man    lässt er  kalten und salzt scharf aus. Der ausgeschiedene       Farbstoff    wird     abgenutscht,    mit Salzsole ge  waschen und gepresst. Der so gewonnene       Presskuchen    wird mit 600 Teilen Wasser von  40       angeteigt,    alsdann gibt man 25 Teile  Natronlauge von     36()        B6    und 360 Teile       Hypochloritlösung,        enthaltend        13        %        aktives     Chlor, zu, erwärmt auf<B>65'</B> und hält diese  Temperatur zirka eine Stunde.

   Man lässt er  kalten, salzt 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 4-amino-3-methoxyazobenzene-3'-sulfonic acid are condensed with one mole of 4,4'-dinitrostilberr-2,2'-disulfonic acid under pressure and that he kept condensation product treated with an oxidizing agent.



  The new dye is a red powder when dried, which dissolves in water and diluted alkalis with orange-red, in concentrated sulfuric acid with green color and dyes cotton in very light and alkali-real red-orange tones <I> Example:

  A stirred autoclave is charged with 900 parts of water, 66 parts of 4-amirro-3-metlr-oxyazobenzene-3'-sulfonic acid sodium, produced by coupling diazotized metanilic acid and o-anisidine-co-methanesulfonic acid and saponification of the azo dye obtained, 47 parts of p. sodium p'-dinitrostilben-0.0'disulfosaurem and 130 parts of sodium hydroxide solution of 36 B6. The mixture is heated to 130 and condensed for 6 hours at this temperature.

       It is left cold and salted out sharply. The precipitated dye is filtered off with suction, washed with brine and pressed. The press cake obtained in this way is made into a paste with 600 parts of 40 water, then 25 parts of sodium hydroxide solution of 36 () B6 and 360 parts of hypochlorite solution containing 13% active chlorine are added, heated to 65 'and held this temperature for about an hour.

   It is left cold, salted out and the dye is separated off as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass mau 2 Mol 4-Amino-3-methoxyazoberizol-3'-sulfo- säure mit einem 1M1 4.4'-Dinitrostilben-2.2-di- sulfosäure unter Druck kondensiert und das erhaltene Kondensationsprodukt rnit einem Oxydationsmittel behandelt. Claim: Process for the preparation of a new dye, characterized in that 2 moles of 4-amino-3-methoxyazoberizole-3'-sulfonic acid are condensed with a 1M1 4,4'-dinitrostilbene-2.2-disulfonic acid under pressure and the resulting condensation product treated with an oxidizing agent. Der neue Farbstoff stellt getrocknet ein rotes Pulver dar, welches sich in Wasser und verdünnten Alkalien mit orangeroter, in konzentrierter Schwefelsäure mit grüner Farbe löst und Baumwolle in sehr licht- und alkali- echten rotorangen Tönen anfärbt. The new dye is a red powder when dried, which dissolves in water and diluted alkalis with orange-red, in concentrated sulfuric acid with green color and dyes cotton in very light and alkali-real red-orange tones.
CH145871D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145871A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145871T 1929-03-16
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145871A true CH145871A (en) 1931-03-15

Family

ID=25714168

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145871D CH145871A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145871A (en)

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