CH144485A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH144485A
CH144485A CH144485DA CH144485A CH 144485 A CH144485 A CH 144485A CH 144485D A CH144485D A CH 144485DA CH 144485 A CH144485 A CH 144485A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
disazo dye
preparation
amino
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 CH144485A publication Critical patent/CH144485A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 142444.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Es wurde gefunden, dass man einen neuen       Disazofarbstoff    erhält, wenn man     1-Methyl-          4-aminobenzol-3-sulfosäure    dianotiert, mit  1 -     Amino-2-methoxynaphthalin-6-sulfosäure     vereinigt, den erhaltenen     Monoazofarbstoff     dianotiert und mit     2-Amino-5-oxynaphthalin-          7-sulfosäure    kuppelt.  



  Der neue     Disazofarbstoff    färbt Baumwolle  und die Kunstseiden aus regenerierter Zellu  lose, insbesondere     Viskosekunstseide,    in  blauen Tönen.  



  <I>Beispiel:</I>  Die aus 18,7 Teilen     1-Methyl-4-amino-          benzol-3-sulfosäure    bereitete     Diazolösung     wird bis zum Verschwinden der mineral  sauren Reaktion mit     Natriumacetat    versetzt  und mit einer neutralen Lösung von     25,3     Teilen     1.-Amino-2-methoxynaphthalin-6-sul-          fosäure    vereinigt.

   Der gebildete     Monoazo-          farbstoff    wird durch Zugabe von Soda in der  Wärme in Lösung gebracht, hierauf als Na  triumsalz durch Kochsalz     ausgesalzen    und       abfiltriert.    Der wieder gelöste Farbstoff  wird bei 10   mit 6,9 Teilen     Natriumnitrit       und hierauf mit 30 Teilen 30     %        iger    Salz  säure versetzt.

   Die     Diazolösung    lässt man  einfliessen in eine     sodaalkalische    Lösung von  23,9 Teilen     2-Amino-5-oxynaphthalin-7-sul-          fosäure.    Nach beendeter Kupplung wird der  Farbstoff     ausgesalzen    und filtriert. Die  zweite Kupplung kann auch bei Gegenwart  von     Pyridin    vorgenommen werden.



      Additional patent to main patent no. 142444. Process for the preparation of a disazo dye. It has been found that a new disazo dye is obtained if 1-methyl-4-aminobenzene-3-sulfonic acid is dianotated, combined with 1 - amino-2-methoxynaphthalene-6-sulfonic acid, the monoazo dye obtained is dianotized and 2-amino 5-oxynaphthalene-7-sulfonic acid couples.



  The new disazo dye dyes cotton and artificial silk from regenerated cellulose, especially viscose artificial silk, in blue tones.



  <I> Example: </I> The diazo solution prepared from 18.7 parts of 1-methyl-4-aminobenzene-3-sulfonic acid is treated with sodium acetate until the mineral acid reaction disappears and with a neutral solution of 25.3 Parts of 1.-amino-2-methoxynaphthalene-6-sulphonic acid combined.

   The monoazo dye formed is brought into solution by adding hot soda, then salted out as sodium salt with sodium chloride and filtered off. The redissolved dye is added at 10 with 6.9 parts of sodium nitrite and then with 30 parts of 30% hydrochloric acid.

   The diazo solution is allowed to flow into an alkaline soda solution of 23.9 parts of 2-amino-5-oxynaphthalene-7-sulphonic acid. When the coupling is complete, the dye is salted out and filtered. The second coupling can also be carried out in the presence of pyridine.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Disazofarbstoffes, dadurch gekennzeichnet, dass man 1-Methyl-4-aminobenzol-3-sulfo- säure dianotiert, mit 1-Amino-2-methoxy- naphthalin-6-sulfosäure vereinigt, den erhal tenen Monoazofarbstoff dianotiert und mit 2-Amino-5-oxynaphthalin-7-sulfosäure kup pelt. Der neue Disazofarbstoff färbt Baumwolle und die Kunstseiden aus regenerierter Zellu lose, insbesondere Viskosekunstseide, in blauen Tönen. Claim: Process for the preparation of a new disazo dye, characterized in that 1-methyl-4-aminobenzene-3-sulfonic acid is dianotated, combined with 1-amino-2-methoxynaphthalene-6-sulfonic acid, the monoazo dye obtained is dianotated and kup pelt with 2-amino-5-oxynaphthalene-7-sulfonic acid. The new disazo dye dyes cotton and artificial silk from regenerated cellulose, especially viscose artificial silk, in blue tones.
CH144485D 1929-02-02 1929-02-02 Process for the preparation of a disazo dye. CH144485A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH142444T 1929-02-02
CH144485T 1929-02-02

Publications (1)

Publication Number Publication Date
CH144485A true CH144485A (en) 1930-12-31

Family

ID=25714043

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144485D CH144485A (en) 1929-02-02 1929-02-02 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH144485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851004A1 (en) * 1996-12-24 1998-07-01 Bayer Ag Disazo dyestuffs for dyeing materials containing cellulose

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851004A1 (en) * 1996-12-24 1998-07-01 Bayer Ag Disazo dyestuffs for dyeing materials containing cellulose
US6084078A (en) * 1996-12-24 2000-07-04 Bayer Aktiengesellschaft Disazo dyestuffs for dyeing cellulosic materials

Similar Documents

Publication Publication Date Title
CH144485A (en) Process for the preparation of a disazo dye.
CH144489A (en) Process for the preparation of a disazo dye.
CH144484A (en) Process for the preparation of a disazo dye.
CH144483A (en) Process for the preparation of a disazo dye.
CH144486A (en) Process for the preparation of a disazo dye.
CH144487A (en) Process for the preparation of a disazo dye.
CH144488A (en) Process for the preparation of a disazo dye.
CH144490A (en) Process for the preparation of a disazo dye.
CH148005A (en) Process for the preparation of a disazo dye.
CH138227A (en) Process for the production of a new azo dye.
CH164429A (en) Process for the production of a new azo dye.
CH162149A (en) Process for the production of a new azo dye.
CH169244A (en) Process for the production of a new azo dye.
CH119895A (en) Process for the production of a new dye.
CH148004A (en) Process for the preparation of a disazo dye.
CH164430A (en) Process for the production of a new azo dye.
CH155025A (en) Process for the production of a new azo dye.
CH119896A (en) Process for the production of a new dye.
CH164432A (en) Process for the production of a new azo dye.
CH131254A (en) Process for the production of a new azo dye.
CH124677A (en) Process for the preparation of a monoazo dye.
CH146763A (en) Process for the production of a new azo dye.
CH164433A (en) Process for the production of a new azo dye.
CH119118A (en) Process for the production of a new dye.
CH135389A (en) Process for the production of a new azo dye.