CH144302A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH144302A
CH144302A CH144302DA CH144302A CH 144302 A CH144302 A CH 144302A CH 144302D A CH144302D A CH 144302DA CH 144302 A CH144302 A CH 144302A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
contain
dyes
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 CH144302A publication Critical patent/CH144302A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass     Diazoberrzolver-          bindungen,    die in     Parastellung    zur     Diazo-          gruppe    einen hydrierten Ring der     Benzolreihe     enthalten und in     o-Stellung    weitere     Substi-          tuenten    enthalten können, wertvolle neue       Azofarbstoffe    ergeben, wenn man sie mit den  üblichen Kupplungskomponenten, die min  destens eine     Sulfogruppe    enthalten, kombi  niert.

   Die so erhaltenen     Farbstoffe    entsprechen  der allgemeinen Formel  
EMI0001.0014     
    worin X Wasserstoff oder eine     Alkylgruppe,          n    die Zahl 8 oder 10, Y     Wasserstoff,    Halo  gen, eine     Alkyl-    oder     Alkoxygruppe    und R  einen     kupplungsfähigen,    aromatischen Rest  bedeutet, der mindestens eine     Sulfogruppe     enthält.  



  Diese Farbstoffe färben Wolle aus saurem  Bade gelb, rot bis violett und braun. Sie    zeichnen sich aus durch reine und leuchtende       Nüancen,    sowie durch eine     auffallende    gute  Wasch- und     Walkechtheit.    Diejenigen dieser  Farbstoffe, die einen     Cyclohexylring    in ihrem  Molekül enthalten (n in obiger Formel = 10),  färben im allgemein     geblichere        Nüancen    als  diejenigen mit einem     Cyclohegenylring        (rr=8),     während die übrigen Eigenschaften beider  Gruppen sehr ähnlich sind.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man  die     Diazoverbindung    von     4-Amino-3-methyl-          hexahydrodiphenyl    mit     2.8-Dioxynaphtalin-          6-sulfosäure    kuppelt. Der so erhaltene Farb  stoff färbt Wolle in roten Tönen an.  



  <I>Beispiel:</I>  . Die salzsaure Lösung von 18,9 kg     4-Ami-          no-3-methylhexahydrodiphenyl    in etwa 100  Liter heissem Wasser wird in eine Mischung  von 20 Liter Salzsäure     (spez.    Gewicht     1,15ä)         und Eis gegeben, die so entstandene Suspen  sion wird mit einer Lösung von 6,9 kg       Natriumnitrit    in etwa 50 Liter Wasser bei  5-10   dianotiert, wobei die     Diazoverbindung     in Lösung geht.

   Die so erhaltene     Diazover-          bindung    kuppelt     inan    bei etwa 10   mit einer  Lösung von     25    kg     2.8-Dioxynaphtalin-6-sulfo-          säure    und 34 kg Soda.



  Process for the preparation of an azo dye. It has been found that diazoberrzene compounds which contain a hydrogenated ring of the benzene series in the para position to the diazo group and which can contain further substituents in the o position, produce valuable new azo dyes if they are combined with the usual coupling components that contain at least contain a sulfo group, combined.

   The dyes obtained in this way correspond to the general formula
EMI0001.0014
    where X is hydrogen or an alkyl group, n is 8 or 10, Y is hydrogen, halogen, an alkyl or alkoxy group and R is a coupling-capable aromatic radical which contains at least one sulfo group.



  These dyes dye wool from an acid bath yellow, red to purple and brown. They are characterized by pure and luminous nuances, as well as by a strikingly good wash and milled fastness. Those of these dyes that contain a cyclohexyl ring in their molecule (n in the above formula = 10) generally color more bleached nuances than those with a cyclohegenyl ring (rr = 8), while the other properties of both groups are very similar.



  The present patent now relates to a process for the production of an azo dye, characterized in that the diazo compound of 4-amino-3-methylhexahydrodiphenyl is coupled with 2,8-dioxynaphthalene-6-sulfonic acid. The dye thus obtained stains wool in red shades.



  <I> Example: </I>. The hydrochloric acid solution of 18.9 kg of 4-amino-3-methylhexahydrodiphenyl in about 100 liters of hot water is added to a mixture of 20 liters of hydrochloric acid (specific weight 1.15 Å) and ice, and the resulting suspension is with a solution of 6.9 kg of sodium nitrite in about 50 liters of water at 5-10, the diazo compound going into solution.

   The diazo compound thus obtained couples inanan at about 10 with a solution of 25 kg of 2,8-dioxynaphthalene-6-sulfonic acid and 34 kg of soda.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 4-Amino-3-inethylhexa- hydrodiphenyl mit 2 . 8-Dioxynaphtalin-6- sulfosäure kuppelt. Der so erhaltene Farb stoff färbt Wolle in roten Tönen an. PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 4-amino-3-ynethylhexa-hydrodiphenyl is mixed with 2. 8-Dioxynaphthalene-6-sulfonic acid couples. The dye thus obtained stains wool in red shades.
CH144302D 1928-06-16 1929-06-10 Process for the preparation of an azo dye. CH144302A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE144302X 1928-06-16
DE280628X 1948-10-01

Publications (1)

Publication Number Publication Date
CH144302A true CH144302A (en) 1930-12-31

Family

ID=25752084

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144302D CH144302A (en) 1928-06-16 1929-06-10 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH144302A (en)

Similar Documents

Publication Publication Date Title
CH144302A (en) Process for the preparation of an azo dye.
DE44002C (en) Process for the preparation of dyes from the group of the metaam dophenol-phthalein
DE533617C (en) Process for the preparation of azo dyes
DE702932C (en) Process for the preparation of monoazo dyes
DE431773C (en) Process for the production of azo dyes
DE575216C (en) Process for the preparation of a monoazo dye
DE622656C (en) Process for the production of water-insoluble azo dyes
DE614540C (en) Process for the preparation of monoazo dyes
DE582644C (en) Process for the production of azo dyes
DE472488C (en) Process for the preparation of lightfast yellow monoazo dyes
DE712747C (en) Process for the preparation of water-insoluble mono- or disazo dyes
DE587652C (en) Process for the preparation of monoazo dyes
DE617665C (en) Process for the preparation of monoazo dyes
DE697000C (en) Process for the preparation of o-oxyazo dyes
DE719717C (en) Process for the production of chromium-containing azo dyes
DE650730C (en) Process for the preparation of water-insoluble monoazo dyes
DE938029C (en) Process for the production of acidic wool dyes of the anthraquinone series
DE540217C (en) Process for the production of azo dyes
DE749166C (en) Process for the preparation of monoazo dyes
DE582277C (en) Process for the preparation of water-insoluble monoazo dyes
DE741291C (en) Process for the preparation of disazo dyes
AT107575B (en) Process for the preparation of monoazo dyes.
CH302404A (en) Process for the preparation of a trisazo dye.
CH150305A (en) Process for the preparation of an acidic disazo dye.
CH185957A (en) Process for the preparation of a yellow substantive cotton dye.