CH145352A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

Info

Publication number
CH145352A
CH145352A CH145352DA CH145352A CH 145352 A CH145352 A CH 145352A CH 145352D A CH145352D A CH 145352DA CH 145352 A CH145352 A CH 145352A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
caustic potash
condensation
blue
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 CH145352A publication Critical patent/CH145352A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines     Küpenfarbstoffes.       Gegenstand dieses Patentes ist ein Ver  fahren     zur    Darstellung von 7 ..8 . 7' .     8'-          Dibenzo-isoviolanthron,    das     darin    besteht,  dass man     1.4-Dichlor-8,(ss-naphtoyl)-naph-          talin    in der Hitze     mit    einem alkalischen  Kondensationsmittel behandelt.

   Man kann  diese Kondensation auch in Gegenwart von    Alkohol vornehmen, und zwar zweckmässig  in der Weise, dass man die     Rondensation    mit       Ätzkali    in Gegenwart von Alkohol bei<B>100</B>  bis 150  C durchführt.  



  Die     Farbstoffbildung    kann durch die  folgenden Formelbilder veranschaulicht wer  den.  
EMI0001.0013     
      Der so erhaltene Farbstoff färbt Baumwolle  aus blauer     Küpe    in rein blauen Tönen an.  



       Beispiel:     500 Gewichtsteile     Atzkali    werden mit  200 Gewichtsteilen Äthylalkohol bei 100  C  gerührt. 100 Gewichtsteile     1.4-Dichlor-8-          (ss-naphtoyl)-naphtalin    werden     portionsweise     in diese Schmelze eingetragen. Die Tempera  tur der Schmelze wird zirka 7 Stunden bei       110     C gehalten und schliesslich innerhalb  einer Stunde bis auf 150  C erhöht.

   Nach der  üblichen Aufarbeitung des Reaktionsge  misches wird 7 . 8 . 7' .      & '    -     Dibenzo    -     isoviol-          anthron    erhalten, welches Baumwolle aus  blauer     Küpe    in rein blauen     Tönen    anfärbt.



      Process for the production of a vat dye. The subject of this patent is a method for representing 7 ..8. 7 '. 8'-Dibenzo-isoviolanthrone, which consists in treating 1,4-dichloro-8, (ss-naphtoyl) -naphthalene in the heat with an alkaline condensing agent.

   This condensation can also be carried out in the presence of alcohol, expediently in such a way that the condensation is carried out with caustic potash in the presence of alcohol at 100 to 150.degree.



  The dye formation can be illustrated by the following formula pictures.
EMI0001.0013
      The dye thus obtained stains cotton from a blue vat in pure blue tones.



       Example: 500 parts by weight of caustic potash are stirred with 200 parts by weight of ethyl alcohol at 100 C. 100 parts by weight of 1,4-dichloro-8- (ss-naphtoyl) naphthalene are added in portions to this melt. The temperature of the melt is kept at 110 ° C. for about 7 hours and finally increased to 150 ° C. within one hour.

   After the usual work-up of the reaction mixture, 7. 8th . 7 '. & '- Dibenzo - isoviol- anthron, which dyes cotton from a blue vat in pure blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 7 . 8 . 7'. 8' Dibenzo-isoviolanthron, dadurch gekennzeich- net, da.ss man 1 . 1-Diehlor-8-(ss=naphtoyl)- naphtalin in der Hitze mit einem alkalischen Kondensationsmittel behandelt. Der so erhaltene Farbstoff färbt Baum wolle aus blauer hüpe in rein blauen Tönen an. TJNTERANSPRüCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, da,ss man Ätzkali als alka lisches Kondensationsmittel verwendet. ?. PATENT CLAIM: Method for the representation of 7. 8th . 7 '. 8 'Dibenzo-isoviolanthrone, characterized by the fact that 1. 1-Diehlor-8- (ss = naphtoyl) - naphthalene treated in the heat with an alkaline condensation agent. The dye obtained in this way dyes cotton from a blue hüpe in pure blue tones. TJNTERANSPRüCHE 1. A method according to claim, characterized in that caustic potash is used as alkali condensation agent. ?. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Konden sation mit Ätzkali in Alkohol bei einer Temperatur von 100 bis 150 C vornimmt. Method according to claim, characterized in that the condensation is carried out with caustic potash in alcohol at a temperature of 100 to 150 C.
CH145352D 1927-12-28 1928-12-17 Process for the production of a vat dye. CH145352A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE145352X 1927-12-28
CH143395T 1928-12-17

Publications (1)

Publication Number Publication Date
CH145352A true CH145352A (en) 1931-02-15

Family

ID=25714270

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145352D CH145352A (en) 1927-12-28 1928-12-17 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH145352A (en)

Similar Documents

Publication Publication Date Title
CH145352A (en) Process for the production of a vat dye.
CH168020A (en) Process for the preparation of an acidic dye of the anthraquinone series.
CH269046A (en) Process for the preparation of a benzoxanthene series oxy compound.
CH182580A (en) Process for the preparation of a product which can be used as a wetting, washing, emulsifying, dispersing, leveling and softening agent.
CH145351A (en) Process for the production of a vat dye.
CH185343A (en) Process for the preparation of a sulfenamide.
CH187594A (en) Process for the preparation of a product which can be used as a wetting, washing, emulsifying, dispersing, leveling and softening agent.
CH211850A (en) Process for the preparation of a phenanthrene derivative.
CH143395A (en) Process for the production of a vat dye.
CH201509A (en) Process for the preparation of a quaternary aminobenzylacylamine.
CH202719A (en) Process for producing a water-soluble nitrogen-containing compound.
CH175883A (en) Process for the preparation of a substantive copper-containing azo dye.
CH175882A (en) Process for the preparation of a substantive copper-containing azo dye.
CH175668A (en) Process for the production of a textile auxiliary.
CH196532A (en) Process for the preparation of a quaternary aminoacetic acid amide derivative.
CH175885A (en) Process for the preparation of a substantive copper-containing azo dye.
CH232517A (en) Process for the production of a vat dye.
CH170768A (en) Process for the preparation of a substantive copper-containing azo dye.
CH194964A (en) Process for the preparation of a dioxazine dye sulfonic acid.
CH219577A (en) Process for the preparation of a chromium-containing monoazo dye.
CH175881A (en) Process for the preparation of a substantive copper-containing azo dye.
CH138190A (en) Process for the production of a new intermediate product.
CH207452A (en) Process for the preparation of a condensation product.
CH173984A (en) Process for the production of a new sulfur dye.
CH153387A (en) Process for the preparation of an arylide of a 3-oxydiarylamine-5-carboxylic acid.