CH131258A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH131258A
CH131258A CH131258DA CH131258A CH 131258 A CH131258 A CH 131258A CH 131258D A CH131258D A CH 131258DA CH 131258 A CH131258 A CH 131258A
Authority
CH
Switzerland
Prior art keywords
blue
dye
production
chromium
azo dye
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 CH131258A publication Critical patent/CH131258A/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

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstofes.       Es wurde     gufunden,    dass man einen neuen  wertvollen     Farbstoff    erhält, wenn man den       o-Oxyazofarbstoff,    welcher durch Vereinigen  von     5-Nitro-4-chlor-2-amino-l-phenol    mit     2-          (2'-Methoxy)-phenylamino-5-oxynaphthaliii    - 7  sulfosäure entsteht, mit Chrom abgebenden  Mitteln unter Druck behandelt.

   Der neue  Farbstoff stellt ein dunkelblaues Pulver dar,       löst        sich        in        10        %        iger        Natronlauge        mit        rot-          stichig    blauer, in konzentrierter Schwefel  säure mit blauvioletter Farbe auf und färbt  Baumwolle aus neutralem     (Tlaubersalzbade    in  blaugrauen Tönen mit guten Echtheitseigen  sehaften.  



  <I>Beispiel</I>  5,44 Gewichtsteile des     Farbstoffes    aus       5-Nitro-4-chlor-2-amino-l-phenol    und 2-(2'       Methoxy)-phenyl-amino-5-oxynaplithalin-7-sul-          fosäure    werden in 1200 Gewichtsteilen Wasser  neutral gelöst und mit 3,04 Gewichtsteilen       Crs0s    in Form von essigsaurem Chrom im         Autoklaven    längere Zeit auf 1.25-140 0 er  hitzt. Hierauf wird der ausgeschiedene Farb  stoff     abfiltriert    und bei mässiger Temperatur  getrocknet.



  Process for the preparation of a new azo dye. It has been found that a new valuable dye is obtained if the o-oxyazo dye, which is obtained by combining 5-nitro-4-chloro-2-amino-1-phenol with 2- (2'-methoxy) -phenylamino- 5-oxynaphthaliii - 7 sulfonic acid is produced, treated with chromium-releasing agents under pressure.

   The new dye is a dark blue powder, dissolves in 10% sodium hydroxide solution with a reddish-tinged blue, in concentrated sulfuric acid with a blue-violet color and dyes cotton from neutral (Tlaubersalzbaden in blue-gray shades with good fastness properties.



  <I> Example </I> 5.44 parts by weight of the dye from 5-nitro-4-chloro-2-amino-1-phenol and 2- (2 'methoxy) -phenyl-amino-5-oxynaplithalin-7-sul - Fosäure are dissolved neutrally in 1200 parts by weight of water and with 3.04 parts by weight of Crs0s in the form of acetic acid chromium in the autoclave is heated to 1.25-140 0 for a long time. The precipitated dye is then filtered off and dried at a moderate temperature.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Farbstoffes, dadurch gekennzeichnet, dass man den o-Oxyazofarbstoff, welcher durch Vereinigen von 5-Nitro-4-chlor-2-amino- 1-phenol mit 2-(2'-Methoxy)-phenylamino-5- oxynaphthalin-7-sulfosäureentsteht, mitChrom abgebenden Mitteln unter Druck behandelt. Claim: Process for the production of a chromium-containing dye, characterized in that the o-oxyazo dye, which is obtained by combining 5-nitro-4-chloro-2-amino-1-phenol with 2- (2'-methoxy) - phenylamino-5-oxynaphthalene-7-sulfonic acid, treated with chromium donating agents under pressure. Der neue Farbstoff stellt ein dunkelblaues Pulver dar, löst sich in 10 % iger Natron- lauge mit rotstichig blauer, in konzentrierter Schwefelsäure mit blauvioletter Farbe auf und färbt Baumwolle aus neutralem Glauber- salzbade in blaugrauen Tönen mit guten Ecbtheitseigenschaften. The new dye is a dark blue powder, dissolves in 10% sodium hydroxide solution with a reddish-tinged blue, in concentrated sulfuric acid with a blue-violet color and dyes cotton from a neutral Glauber's salt bath in blue-gray tones with good skin-tone properties.
CH131258D 1927-04-23 1927-04-23 Process for the production of a new azo dye. CH131258A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH131258T 1927-04-23
CH128006T 1927-08-19

Publications (1)

Publication Number Publication Date
CH131258A true CH131258A (en) 1929-01-31

Family

ID=25711019

Family Applications (1)

Application Number Title Priority Date Filing Date
CH131258D CH131258A (en) 1927-04-23 1927-04-23 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH131258A (en)

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