CH247602A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH247602A
CH247602A CH247602DA CH247602A CH 247602 A CH247602 A CH 247602A CH 247602D A CH247602D A CH 247602DA CH 247602 A CH247602 A CH 247602A
Authority
CH
Switzerland
Prior art keywords
blue
dye
new
ethyl ester
conc
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH247602A publication Critical patent/CH247602A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

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

Description

  

      Verfahren    zur Herstellung     eines    neuen     Monoazofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen     chromier-          haren        Monoazofarbstoffes    und ist dadurch ge  kennzeichnet, dass man     diazotierte        2-Amino-          phenol    - 6 -     carbamidsäureäthylester-4-        sulfori-          säure    mit     a-(7-Oxynaphthyl)-carba.midsäure-          äthylest.er    vereinigt.  



  <I>Beispiel:</I>  <B>27,6</B> Gewichtsteile     2-Aminophenol-6-carb-          amidsäureäthylester    - 4 -     sulfonsäure    werden       diazotiert    und mit einer Lösung, welche<B>23,1</B>  Gewichtsteile a -     (7-Oxynaphthyl)-carbamid-          siiureäthylester,    4 Gewichtsteile     Natrium-          hydroxyd    und die berechnete Menge Soda  enthält,     gekuppelt.    Isoliert und getrocknet  stellt der Farbstoff ein schwarzes Pulver dar.  Seine     wässerige    Lösung ist blau und diejenige  in     conc.    Schwefelsäure rot.

   Seine     chromierten          Ausfärbungen    auf Wolle sind graublau im  Ton und haben sehr gute Wasch-, Walk- und       Lichtechtheiten.     



  Zur Herstellung des Chromkomplexes  wird eine wie oben erhaltene     Farbstoffmenge     in 1200 Gewichtsteilen     Chromformiat,    deren  Chromgehalt 12 Teilen Chromoxyd ent  spricht, 20 Stunden am     Rückflusskühler    ge  kocht. Der     ausgesalzene    und getrocknete    Farbstoff ist ein schwarzes Pulver,     weleU:     sich in Wasser mit blauer und in     cn@ic.     Schwefelsäure mit blauroter Farbe löst.     Aus     saurem Bad auf     urolle    ausgefärbt gibt er  graublaue Töne.



      Process for the preparation of a new monoazo dye. The present patent relates to a process for the production of a new chromic monoazo dye and is characterized in that diazotized 2-aminophenol-6-carbamic acid ethyl ester-4-sulforic acid with a- (7-oxynaphthyl) -carba. midsäure- äthylest.er united.



  <I> Example: </I> <B> 27.6 </B> parts by weight of 2-aminophenol-6-carbamic acid ethyl ester - 4 - sulfonic acid are diazotized and mixed with a solution which <B> 23.1 </ B > Parts by weight of a - (7-oxynaphthyl) carbamide acid ethyl ester, 4 parts by weight sodium hydroxide and the calculated amount of soda, coupled. Isolated and dried, the dye is a black powder. Its aqueous solution is blue and that in conc. Sulfuric acid red.

   Its chromed colorations on wool are gray-blue in tone and have very good wash, milled and light fastness properties.



  To prepare the chromium complex, an amount of dye obtained above in 1200 parts by weight of chromium formate, the chromium content of which corresponds to 12 parts of chromium oxide, is boiled for 20 hours on a reflux condenser. The salted out and dried dye is a black powder, weleU: in water with blue and in cn @ ic. Sulfuric acid dissolves with a blue-red color. Colored from an acid bath on urolle, it gives gray-blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen chromierbaren3lonoazofarbstoffes, dadurchge- kennzeichnet, dass man diazotierte 2-Amino- phenol - 6 - carbamidsäureäthylester-4- sulfon- säu#_e mit a-(7-Oxynaphthyl)-carbamidsäure- äthylester vereinigt. Der neue Farbstoff stellt ein schwarzes Pulver dar. Seine wässerige Lösung ist blau und diejenige in conc. Schwefelsäure rot. PATENT CLAIM: Process for the production of a new chromable 3-onoazo dye, characterized in that diazotized 2-aminophenol-6-carbamic acid ethyl ester-4-sulfonic acid is combined with a- (7-oxynaphthyl) -carbamic acid ethyl ester. The new dye is a black powder. Its aqueous solution is blue and that in conc. Sulfuric acid red. Seine chromierten Ausfärbungen auf Wolle sind graublau im Ton und haben sehr gute Wasch-, Walk- und Lichtechtheit. Durch Behandlung des neuen Monoazo- farbstoffes in Substanz mit chromabgebenden Mitteln erhält man den Chromkomplex, wel cher ein schwarzes Pulver ist, das sich in Wasser mit blauer und in conc. Schwefel säure mit blauroter Farbe löst. Aus saurem Bad auf Wolle ausgefärbt gibt er graublaue Töne. Its chromed coloring on wool is gray-blue in tone and has very good wash, milled and lightfastness. By treating the new monoazo dye in substance with chromium-releasing agents, the chromium complex is obtained, which is a black powder that differs in water with blue and in conc. Sulfuric acid dissolves with a blue-red color. Dyed onto wool from an acid bath, it gives gray-blue tones.
CH247602D 1944-09-01 1944-09-01 Process for the preparation of a new monoazo dye. CH247602A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH243335T 1944-09-01
CH247602T 1944-09-01

Publications (1)

Publication Number Publication Date
CH247602A true CH247602A (en) 1947-03-15

Family

ID=25728813

Family Applications (1)

Application Number Title Priority Date Filing Date
CH247602D CH247602A (en) 1944-09-01 1944-09-01 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH247602A (en)

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