CH248698A - Process for the preparation of a metallizable disazo dye. - Google Patents

Process for the preparation of a metallizable disazo dye.

Info

Publication number
CH248698A
CH248698A CH248698DA CH248698A CH 248698 A CH248698 A CH 248698A CH 248698D A CH248698D A CH 248698DA CH 248698 A CH248698 A CH 248698A
Authority
CH
Switzerland
Prior art keywords
disazo dye
red
preparation
dye
color
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH248698A publication Critical patent/CH248698A/en

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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
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
    • C09B35/18—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from heterocyclic compounds

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 248608.    Verfahren     zur    Herstellung eines     metallisierbaren        Disazofarbstoffes.       Das vorliegende     Patent    betrifft ein Ver  fahren zur Herstellung eines neuen,     metalli-          sierbaren        Disazofarbstoffes    und ist dadurch       bekennzeichnet,        da.ss    man 1 Hol     tetrazotier-          tc        s        3,3'-Dioxy-4,

  4'-diaminodiphenyl    in Gegen  wart von     Pyridin    mit 2 Hol     1-(ss-Naphthyl)-          8-methyl-5-pyrazolon-8'-sulfonsäure    ver  einigt.  



       Beispiel:     2,9     Gewichtsteile        3,3'-Dioxy-4,4'-diamino-          dipheny        ldiehlorhydrat    werden in 20 Teilen  Wasser und 4,3     Gewichtsteilen        konz.    Salz  säure mit einer     konz.    Lösung von 1,38 Ge  wichtsteilen     Natriumnitrit    bei etwa 5"     tetrazo-          eiert.    Die erhaltene     Tetrazoverbindung    wird  bei 0" mit Soda kongoneutral gestellt und  bei 0" in eine Vorlage aus 5,86 Gewichts  teilen     1-(ss-Naphthyl)

  -3-methyl-5-pyrazolon-          8'-sulfonsäure,    50 Teilen Wasser und 40       Gewichtsteilen        Pyridin        eingetragen.    Es wird  1-2 Stunden bei 0-5" und 15 Stunden bei  10-15" gerührt. Die dickgewordene Masse  wird dann mit etwas Wasser versetzt und    der Farbstoff durch wenig Kochsalz ausge  fällt; er färbt Zellwolle gelbrot; beim Nach  kupfern entsteht eine bordeauxrote Färbung.  Der neue Farbstoff, welcher ein braunes  Pulver darstellt, löst sich in Wasser mit bor  deauxroter und in konzentrierter Schwefel  säure mit     rotvioletter    Farbe.



  <B> Additional patent </B> to main patent no. 248608. Process for the production of a metallizable disazo dye. The present patent relates to a process for the production of a new, metallizable disazo dye and is characterized in that 1 Hol tetrazotized tc s 3,3'-dioxy-4,

  4'-diaminodiphenyl in the presence of pyridine with 2 Hol 1- (ss-naphthyl) - 8-methyl-5-pyrazolone-8'-sulfonic acid united ver.



       Example: 2.9 parts by weight of 3,3'-dioxy-4,4'-diamino-dipheny ldiehlorhydrat are concentrated in 20 parts of water and 4.3 parts by weight. Hydrochloric acid with a conc. Solution of 1.38 parts by weight of sodium nitrite tetrazo- eiert at about 5 ". The tetrazo compound obtained is made Congo-neutral at 0" with soda and at 0 "in a template of 5.86 parts by weight 1- (ss-naphthyl)

  -3-methyl-5-pyrazolone-8'-sulfonic acid, 50 parts of water and 40 parts by weight of pyridine entered. It is stirred for 1-2 hours at 0-5 "and 15 hours at 10-15". The thick mass is then mixed with a little water and the dye is precipitated out by a little table salt; he dyes rayon yellow-red; after coppering, a burgundy color develops. The new dye, which is a brown powder, dissolves in water with boron deaux red and in concentrated sulfuric acid with red-violet color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen, metallisierbaxen Polyazofarbstoffes, dadurch gekennzeichnet, da.ss man 1 Mol tetrazotiertes 3,3'-Dioxy-4,4'-di.aminodiphenyl in Gegen wart von Pyridin mit 2Mol 1-(ss-Naphthyl)- 3-methyl-5-pyrazolon-8'-sulfonsäure ver einigt. PATENT CLAIM: Process for the production of a new, metallisierbaxen polyazo dye, characterized in that 1 mol of tetrazotized 3,3'-dioxy-4,4'-di.aminodiphenyl in the presence of pyridine is mixed with 2 mol of 1- (ss-naphthyl) - 3-methyl-5-pyrazolone-8'-sulfonic acid united. Der neue Disazofarbstoff ist ein braunes Pulver, das sich in Wasser mit bordeaux roter und in konzentrierter Schwefelsäure mit rotvioletter Farbe löst. Er färbt Zellwolle gelbrot; die Färbung wird beim Nachkupfern bordeauxrot. The new disazo dye is a brown powder that dissolves in water with a burgundy color and in concentrated sulfuric acid with a red-violet color. He dyes rayon yellow-red; the color becomes burgundy when re-coppering.
CH248698D 1945-02-13 1945-02-13 Process for the preparation of a metallizable disazo dye. CH248698A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH248698T 1945-02-13
CH243603T 1945-02-13

Publications (1)

Publication Number Publication Date
CH248698A true CH248698A (en) 1947-05-15

Family

ID=25728832

Family Applications (1)

Application Number Title Priority Date Filing Date
CH248698D CH248698A (en) 1945-02-13 1945-02-13 Process for the preparation of a metallizable disazo dye.

Country Status (1)

Country Link
CH (1) CH248698A (en)

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