CH214833A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH214833A
CH214833A CH214833DA CH214833A CH 214833 A CH214833 A CH 214833A CH 214833D A CH214833D A CH 214833DA CH 214833 A CH214833 A CH 214833A
Authority
CH
Switzerland
Prior art keywords
corinth
mol
preparation
dye
disazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH214833A publication Critical patent/CH214833A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/20—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling compounds of different types

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 213061.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Vorliegende Erfindung betrifft ein Ver  fahren zur Herstellung eines     Disazofarbstof-          fes.    Das Verfahren besteht darin, dass man  1     Mol        tetrazotierter        4,4'-Diaminodiphenyl-          3,3'-diearbonsäure    mit 1     Mol        1-(3'-Amino-          phenyl)-3-methyl-5-pyrazolon    und anschlie  ssend mit 1     Mol        2,

  8-Dioxynaphthalin-3-carbon-          säure-6-sulfonsäure    kuppelt.  



  Der neue Farbstoff stellt ein dunkles Pul  ver dar, das sich in Wasser     korinthfarben     löst. Er färbt Baumwolle und regenerierte       Cellulose        korinth    an. Die Färbungen werden  beim Nachbehandeln mit     Kupfersalzen        wasch-          und    lichtecht     schwarzbraun.     



  <I>Beispiel:</I>  272 Teile     4,4'-Diaminodiphenyl-3,3'-di-          carbonsäure    werden alkalisch in Wasser ge  löst. Dann gibt man 175 Teile     Natriumnitrit     zu und säuert bei tiefer Temperatur mit 800  Teilen Salzsäure (d = 1,18) an. Die erhal-         tene    klare     Diazolösung    wird nach einiger Zeit  durch     Aminasulfosäure    von der überschüssi  gen salpetrigen Säure befreit und mit Natrium  acetat bis zur essigsauren Reaktion abge  stumpft. Hierzu fügt man langsam 189 Teile       1-(3'-Aminophenyl)-3-methyl-5-pyrazolon,    die  mit .der eben     ausreichenden    Menge Natrium  hydroxyd in Wasser gelöst werden.

   Nachdem  die halbseitige Kupplung beendet ist, wird  das Zwischenprodukt isoliert und in die     soda-          alkalische    Lösung von 284 Teilen     2,8-Dioxy-          naphthalin-3-carbonsäure-6-sulfonsäure    ein  getragen. Der Farbstoff wird nach 12 Stun  den wie üblich abgeschieden. Der neue Farb  stoff stellt ein dunkles Pulver dar, das sich  in Wasser     korinthfarben    löst. Er färbt Baum  wolle und regenerierte     Cellulose        korinth    an.  Die Färbungen werden beim Nachbehandeln  mit Kupfersalzen wasch- und lichtecht  schwarzbraun. Behandelt man die Färbungen.

    mit     Kaliumbichromat    nach, so erhält man  grauschwarze,     ebenfalls    gut waschechte Töne.



  <B> Additional patent </B> to main patent no. 213061. Process for the production of a disazo dye. The present invention relates to a method for producing a disazo dye. The process consists in that 1 mole of tetrazotized 4,4'-diaminodiphenyl-3,3'-diacid with 1 mole of 1- (3'-aminophenyl) -3-methyl-5-pyrazolone and then with 1 mole 2,

  8-Dioxynaphthalene-3-carboxylic acid-6-sulfonic acid couples.



  The new dye is a dark powder that dissolves in water in the color of a corinth. It stains cotton and regenerated cellulose corinth. After treatment with copper salts, the colorations become washable and lightfast black-brown.



  <I> Example: </I> 272 parts of 4,4'-diaminodiphenyl-3,3'-dicarboxylic acid are dissolved under alkaline conditions in water. 175 parts of sodium nitrite are then added and the mixture is acidified at low temperature with 800 parts of hydrochloric acid (d = 1.18). The clear diazo solution obtained is freed from the excess nitrous acid after some time by amine sulfonic acid and blunted with sodium acetate until an acetic acid reaction occurs. 189 parts of 1- (3'-aminophenyl) -3-methyl-5-pyrazolone are slowly added and dissolved in water with just enough sodium hydroxide.

   After the coupling on one side has ended, the intermediate product is isolated and introduced into the soda-alkaline solution of 284 parts of 2,8-dioxynaphthalene-3-carboxylic acid-6-sulfonic acid. The dye is deposited as usual after 12 hours. The new dye is a dark powder that dissolves in water in the color of Corinth. He stains cotton and regenerated cellulose corinth. After treatment with copper salts, the colorations become washable and lightfast black-brown. Treats the colorations.

    with potassium dichromate, you get gray-black, also well washable tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Mol tetrazotierter 4,4'-Diaminodiphenyl- 3,3'-dicarbonsäure mit 1 Mol 1-(3'-Amino- phenyl)-3-methyl-5-pyrazolon und anschlie ssend mit 1 Mol 2,8-Dioxynaphthalin-3-car- bonsäure-6-sulfonsäure kuppelt. Claim: Process for the preparation of a disazo dye, characterized in that 1 mol of tetrazotized 4,4'-diaminodiphenyl-3,3'-dicarboxylic acid is mixed with 1 mol of 1- (3'-aminophenyl) -3-methyl-5 pyrazolone and then with 1 mol of 2,8-dioxynaphthalene-3-carboxylic acid-6-sulfonic acid. Der neue Farbstoff stellt ein dunkles Pul ver dar, das sich in Wasser korinthfarben löst. Er färbt Baumwolle und regenerierte Cellulose korinth an. Die Färbungen werden beim Nachbehandeln mit Kupfersalzen wasch- und lichtecht schwarzbraun. The new dye is a dark powder that dissolves in water in the color of a corinth. It stains cotton and regenerated cellulose corinth. After treatment with copper salts, the colorations become washable and lightfast black-brown.
CH214833D 1938-09-19 1939-08-18 Process for the preparation of a disazo dye. CH214833A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE214833X 1938-09-19
CH213061T 1939-08-18

Publications (1)

Publication Number Publication Date
CH214833A true CH214833A (en) 1941-05-15

Family

ID=25725362

Family Applications (1)

Application Number Title Priority Date Filing Date
CH214833D CH214833A (en) 1938-09-19 1939-08-18 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH214833A (en)

Similar Documents

Publication Publication Date Title
CH214833A (en) Process for the preparation of a disazo dye.
CH214831A (en) Process for the preparation of a disazo dye.
CH214832A (en) Process for the preparation of a disazo dye.
CH235455A (en) Process for the preparation of a trisazo dye.
CH229356A (en) Process for the preparation of a trisazo dye.
CH268842A (en) Process for the preparation of an azo dye.
CH174266A (en) Process for the preparation of an azo dye.
CH213061A (en) Process for the preparation of a disazo dye.
CH302806A (en) Process for the preparation of a trisazo dye.
CH205801A (en) Process for the preparation of a monoazo dye.
DE1544524A1 (en) Azo dye and process for its preparation
CH302410A (en) Process for the preparation of a trisazo dye.
CH305336A (en) Process for the production of a copper-containing trisazo dye.
CH263513A (en) Process for the preparation of an azo dye.
CH218816A (en) Process for the preparation of a disazo dye.
CH229358A (en) Process for the preparation of a trisazo dye.
CH223704A (en) Process for the production of a new, copper-containing azo dye.
CH220414A (en) Process for the production of a new copper-containing azo dye.
CH229360A (en) Process for the preparation of a trisazo dye.
CH276720A (en) Process for the preparation of an azo dye.
CH111278A (en) Process for the preparation of an azo dye.
CH311496A (en) Process for the preparation of a disazo dye.
CH302407A (en) Process for the preparation of a trisazo dye.
CH226016A (en) Process for the preparation of a tetrakisazo dye.
CH241159A (en) Process for the preparation of a new monoazo dye.