CH211016A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH211016A
CH211016A CH211016DA CH211016A CH 211016 A CH211016 A CH 211016A CH 211016D A CH211016D A CH 211016DA CH 211016 A CH211016 A CH 211016A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
disazo dye
parts
oxybenzene
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 CH211016A publication Critical patent/CH211016A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/147—Disazo dyes in which the coupling component is a bis -(-o-hydroxy-carboxylic- acid amide)

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 208541.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Gemäss dem im Hauptpatent beschriebenen  Verfahren erhält man einen auf Baumwolle  aufziehenden     Disazofarbstoff,    der nach dem  Kupfern eine rote Färbung von sehr guter  Lichtechtheit ergibt, wenn man 2     Mol        6-Chlor-          2-amino-l-oxybenzol-4-sulfosäur-e    dianotiert  und die     Diazoverbindung    mit 1     Mol        Bis-(2'-          oxy-6'-naphthoyl)-4.        4'-diamiriodi        phenyl    - 3 .

       3'-          dicarbonsäure    in Gegenwart eines Alkalis  kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff von ganz ähnlichen Eigen  schaften, wenn man 2     Mol        6-Chlor-2-arnino-          1-oxybenzol-4-sulfosäure    dianotiert und die       Diazoverbindung    mit 1     Mol        Bis-(2'-Oxy-6'-          naphthoyl)    - 4. 4'-     diamino-    3. 3'-     dimethoxydi-          phenyl    in Gegenwart     eines    Alkalis kuppelt.

    <I>Beispiel:</I>  29,2 Teile     Bis-(2'-Oxy-6'-naphthoyl)-4.4'-          diamirro-3.3'-dirnethoxydiphenyl    werden mit  4,5 Teilen     Natriumhydroxyd    in etwa 500  Teilen Wasser gelöst und mit einer aus 22,35  Teilen 6-Chlor-2-amirro-l-oxvbenzol-4-sulfo-    säure, 5 Teilen Salzsäure von 121     B@    und  6,9 Teilen     Natriumnitrit    in etwa 300 Teilen  Wasser hergestellten     Diazoverbindung    ver  einigt. Der gebildete Farbstoff wird     ausge-          salzen,    isoliert und getrocknet. Auf Baum  wolle gefärbt und mit Kupfersulfat nach  behandelt ergibt der Farbstoff rote Färbun  gen von guten Echtheitseigenschaften.



  <B> Additional patent </B> to main patent no. 208541. Process for the production of a disazo dye. According to the process described in the main patent, a cotton-absorbing disazo dye is obtained which, after copper, gives a red coloration of very good lightfastness if 2 mol of 6-chloro-2-amino-1-oxybenzene-4-sulfonic acid are dianotized and the diazo compound with 1 mole of bis (2'-oxy-6'-naphthoyl) -4. 4'-diamiriodiphenyl - 3.

       3'-dicarboxylic acid couples in the presence of an alkali.



  As has now been found further, a dye with very similar properties is obtained if 2 moles of 6-chloro-2-arnino-1-oxybenzene-4-sulfonic acid are dianotized and the diazo compound is mixed with 1 mole of bis- (2'-oxy- 6'-naphthoyl) - 4. 4'-diamino- 3. 3'-dimethoxydiphenyl in the presence of an alkali.

    <I> Example: </I> 29.2 parts of bis- (2'-oxy-6'-naphthoyl) -4.4'-diamirro-3.3'-dirnethoxydiphenyl are dissolved with 4.5 parts of sodium hydroxide in about 500 parts of water and united with a diazo compound prepared from 22.35 parts of 6-chloro-2-amirro-1-oxybenzene-4-sulfonic acid, 5 parts of hydrochloric acid of 121 B @ and 6.9 parts of sodium nitrite in about 300 parts of water. The dye formed is salted out, isolated and dried. Dyed on cotton and treated with copper sulfate, the dye gives red dyeings with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 2 Mol 6-Chlor-2-amino-l-oxybenzol-4-sulfo- säure dianotiert und die Diazoverbindung mit 1 Mol Bis-(2'-Oxy-6'-napbthoyl)-4.4'-diamino- 3.3'-dimethoxydiphenyl in Gegenwart eines Alkalis kuppelt. Der Farbstoff ergibt, auf Baumwolle gefärbt und mit Kupfersulfat nach behandelt, rote Färbungen von guten Echt heitseigenschaften. Claim: Process for the preparation of a disazo dye, characterized in that 2 moles of 6-chloro-2-amino-1-oxybenzene-4-sulfonic acid are dianotated and the diazo compound with 1 mole of bis- (2'-oxy-6 '-napbthoyl) -4.4'-diamino-3.3'-dimethoxydiphenyl in the presence of an alkali. When dyed on cotton and treated with copper sulfate, the dye gives red dyeings of good authenticity properties.
CH211016D 1937-10-08 1938-08-15 Process for the preparation of a disazo dye. CH211016A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE211016X 1937-10-08
CH208541T 1938-08-15

Publications (1)

Publication Number Publication Date
CH211016A true CH211016A (en) 1940-08-15

Family

ID=25724545

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211016D CH211016A (en) 1937-10-08 1938-08-15 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH211016A (en)

Similar Documents

Publication Publication Date Title
CH211016A (en) Process for the preparation of a disazo dye.
CH211015A (en) Process for the preparation of a disazo dye.
CH211017A (en) Process for the preparation of a disazo dye.
DE728886C (en) Process for the preparation of copper complex compounds of substantive azo dyes
CH211599A (en) Process for the preparation of a disazo dye.
CH183864A (en) Process for the preparation of an azo dye.
CH174266A (en) Process for the preparation of an azo dye.
CH201851A (en) Process for the preparation of a disazo dye.
CH189041A (en) Process for the preparation of a monoazo dye.
CH201850A (en) Process for the preparation of a disazo dye.
CH183863A (en) Process for the preparation of an azo dye.
CH208541A (en) Process for the preparation of a disazo dye.
CH201852A (en) Process for the preparation of a disazo dye.
CH177822A (en) Process for the preparation of an o-oxyazo dye.
CH185146A (en) Process for the production of a new azo dye.
CH201853A (en) Process for the preparation of a disazo dye.
CH177824A (en) Process for the preparation of an o-oxyazo dye.
CH172612A (en) Process for the preparation of an azo dye.
CH235457A (en) Process for the preparation of a water-soluble monoazo dye.
CH201857A (en) Process for the preparation of an azo dye.
CH201855A (en) Process for the preparation of a disazo dye.
CH187903A (en) Process for the preparation of an azo dye.
CH174268A (en) Process for the preparation of an azo dye.
CH201861A (en) Process for the preparation of an azo dye.
CH177823A (en) Process for the preparation of an o-oxyazo dye.