CH210999A - Process for the preparation of a new water-soluble disazo dye. - Google Patents

Process for the preparation of a new water-soluble disazo dye.

Info

Publication number
CH210999A
CH210999A CH210999DA CH210999A CH 210999 A CH210999 A CH 210999A CH 210999D A CH210999D A CH 210999DA CH 210999 A CH210999 A CH 210999A
Authority
CH
Switzerland
Prior art keywords
preparation
new water
disazo dye
water
soluble disazo
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH210999A publication Critical patent/CH210999A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 208537.    Verfahren zur Darstellung eines neuen wasserlöslichen     Disazofarbstoffes.       Die vorliegende Erfindung     betrifft    die  Darstellung eines neuen wasserlöslichen     Dis-          azofarbstoffes.     



  Dieser neue wasserlösliche     Disazofarbstoff     wird dadurch erhalten, dass man     tetrazotiertes     N- 3'-     Aininobe        rizoyl-    N -b     enzyl-    3     -ami    n     o-6-m        e-          thylanilin    mit zwei     Molekularmengen        1-Naph-          thol-4-sulfosäure    kuppelt.  



  Der neue     Farbstoff    bildet ein rotes Pulver,  das sich in Wasser zu einer scharlachfarbenen  Lösung und in Schwefelsäure zu einer roten  Lösung löst. Er färbt Wolle aus neutralem  oder saurem Bad in scharlachfarbenen Tönen  von guter Wasch-, Walk und Lichtechtheit.

    <I>Beispiel:</I>  33,1 Teile     N-3'-Aminobenzoyl-N-benzyl-          3-amino-6-inethylanilin    werden in einem Ge  misch von 50 Teilen 36     o/oiger    wässriger  Salzsäure . und 600 Teilen Wasser gelöst  und bei 0- 5   C mit einer Lösung von  13,8 Teilen     Natriumnitrit    in 100 Teilen  Wasser     tetrazotiert.    Die     Tetrazolösung    wird  hierauf zu einer eiskalten Lösung von 49,2  Teilen     Natrium-l-naphthol-4-sulfonat    in 1000    Teilen Wasser     hipzugefüot,    welche genügend       Natriumcarbonat    enthält,

   um das Kupplungs  gemisch während des     Hinzufügens    alkalisch  zu erhalten. Das Rühren wird bis zur voll  ständigen     Kupplung    fortgesetzt und der neue       Farbstoff    hierauf     abfiltriert    und getrocknet.



      Additional patent to the main patent No. 208537. Process for the preparation of a new water-soluble disazo dye. The present invention relates to the preparation of a new water-soluble disazo dye.



  This new water-soluble disazo dye is obtained by coupling tetrazotized N-3'-Aininobe rizoyl-N -b enzyl-3-amine o-6-methylaniline with two molecular amounts of 1-naphthol-4-sulfonic acid.



  The new dye forms a red powder that dissolves into a scarlet solution in water and a red solution in sulfuric acid. It dyes wool from neutral or acidic baths in scarlet tones that are washfast, milled and lightfast.

    <I> Example: </I> 33.1 parts of N-3'-aminobenzoyl-N-benzyl-3-amino-6-ynethylaniline are mixed in a mixture of 50 parts of 36% aqueous hydrochloric acid. and 600 parts of water and tetrazotized at 0-5 C with a solution of 13.8 parts of sodium nitrite in 100 parts of water. The tetrazo solution is then added to an ice-cold solution of 49.2 parts of sodium 1-naphthol-4-sulfonate in 1000 parts of water, which solution contains sufficient sodium carbonate.

   to keep the coupling mixture alkaline during the addition. Stirring is continued until coupling is complete and the new dye is then filtered off and dried.

Claims (1)

PATENTANSPRUCH: ' Verfahren zur Darstellung eines neuen wasserlöslichen Disazofarbstoffes, dadurch ge kennzeichnet, dass man tetrazotiertes N-3' Aminobenzoyl-N-benzyl-3-amino-6-metbyl- ani.lin mit zwei Molekularmengen 1-Naph- thol-4-sulfosäure kuppelt. Der erhaltene Farbstoff bildet ein rotes Pulver, das sich in Wasser zu einer schar lachfarbenen Lösung und in Schwefelsäure zu einer roten Lösung löst. Er färbt Wolle aus neutralem oder saurem Bad in scharlach farbenen Tönen von guter Wasch-, Walk und Lichtechtheit. PATENT CLAIM: 'Process for the preparation of a new water-soluble disazo dye, characterized in that tetrazotized N-3' aminobenzoyl-N-benzyl-3-amino-6-metbyl-ani.lin with two molecular amounts of 1-naphthol-4- sulfonic acid couples. The dye obtained forms a red powder which dissolves in water to form a pale, pale-colored solution and in sulfuric acid to form a red solution. It dyes wool from neutral or acidic baths in scarlet shades of good wash, milled and lightfastness.
CH210999D 1937-07-14 1938-07-13 Process for the preparation of a new water-soluble disazo dye. CH210999A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB210999X 1937-07-14
CH208537T 1938-07-13

Publications (1)

Publication Number Publication Date
CH210999A true CH210999A (en) 1940-08-15

Family

ID=25724528

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210999D CH210999A (en) 1937-07-14 1938-07-13 Process for the preparation of a new water-soluble disazo dye.

Country Status (1)

Country Link
CH (1) CH210999A (en)

Similar Documents

Publication Publication Date Title
CH210999A (en) Process for the preparation of a new water-soluble disazo dye.
CH211000A (en) Process for the preparation of a new water-soluble disazo dye.
CH208537A (en) Process for the preparation of a new water-soluble disazo dye.
CH210732A (en) Process for the preparation of a new water-soluble disazo dye.
CH191165A (en) Process for the preparation of a new monoazo dye.
CH211849A (en) Process for the preparation of a new water-soluble disazo dye.
CH119124A (en) Process for the production of a new dye.
CH135390A (en) Process for the production of a new azo dye.
CH198059A (en) Process for the preparation of a polyazo dye.
CH122910A (en) Process for the preparation of a developer dye.
CH118968A (en) Process for the production of a new dye.
CH167806A (en) Process for the preparation of an azo dye.
CH189140A (en) Process for the preparation of a new monoazo dye.
CH210600A (en) Process for the preparation of a new water-soluble disazo dye.
CH122248A (en) Process for the preparation of an azo dye.
CH116745A (en) Process for the production of a new dye.
CH135391A (en) Process for the production of a new azo dye.
CH121973A (en) Process for the preparation of a developer dye.
CH115465A (en) Process for the production of a new azo dye.
CH135388A (en) Process for the production of a new azo dye.
CH203864A (en) Process for the preparation of a disazo dye.
CH135392A (en) Process for the production of a new azo dye.
CH191160A (en) Process for the preparation of a new monoazo dye.
CH129482A (en) Process for the production of a new azo dye.
CH185957A (en) Process for the preparation of a yellow substantive cotton dye.