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DE333077C - Process for making disazo dyes for wool - Google Patents

Process for making disazo dyes for wool

Info

Publication number
DE333077C
DE333077C DE1919333077D DE333077DD DE333077C DE 333077 C DE333077 C DE 333077C DE 1919333077 D DE1919333077 D DE 1919333077D DE 333077D D DE333077D D DE 333077DD DE 333077 C DE333077 C DE 333077C
Authority
DE
Germany
Prior art keywords
wool
making
disazo dyes
dyes
disazo
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE1919333077D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Application granted granted Critical
Publication of DE333077C publication Critical patent/DE333077C/en
Expired legal-status Critical Current

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
    • C09B35/021—Disazo dyes characterised by two coupling components of the same type
    • C09B35/023—Disazo dyes characterised by two coupling components of the same type in which the coupling component is a hydroxy or polyhydroxy compound

Landscapes

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

Description

Verfahren zur Herstellung von Disazofarbstoffen für Wolle, In dem Hauptpatent 330824 ist ein Verfahren zur Herstellung von unsymmetrischen Disazofarbstoffen beschrieben, darin bestehend, daß die Tetrazoverbindung des 4. # 4'-Diaminoben7ophenons mit r Molekül "I-Naphthol und x Molekül einer Naphtholdisulfosäure kombiniert wird. Die so -erhältlichen Farbstoee färben Wolle aus saurem Bade in sehr kiären Scharlachnuancen, die sich durch hervorragende Echtheitseigenschaften, insbesondere durch vorzügliche «rasch-, Walk- und Lichtechtheit, auszeichnen.Process for the production of disazo dyes for wool, In the main patent 330824 a process for the production of asymmetrical disazo is described, which consists in that the tetrazo compound of the 4th # 4'-diaminoben7ophenons is combined with the molecule "I-naphthol and x molecule of a naphthol disulfonic acid The dyes obtainable in this way dye wool from an acid bath in very scarlet shades of scarlet, which are characterized by excellent fastness properties, in particular by excellent fast, milled and light fastness.

Es wurde nun gefunden, daß man zu Farbstoffen von ähnlichen Echtheitseigenschaften auch gelangt, wenn man die Tetrazoverbindung des 4.4'-Diaminobenzophenons mit zwei Molekülen 2 - 6- oder 2 - 7-Naplitholmonosulfosäiire kombiniert.It has now been found that dyes with similar fastness properties can be obtained also arrives if the tetrazo compound of 4.4'-diaminobenzophenone with two Molecules 2-6 or 2-7 naplithol monosulfonic acid combined.

. Beispiel.. Example.

Die in üblicher Weise aus 2r,2 Teilen 4. - 4"-Diaminobenzophenon hergestellte Tetrazolösung läßt man unter Rühren in eine mit überschüssiger Soda versetzte kalte Lösung von 58 Teilen @ 2 - 6-naphtholsulfosaurem Natrium einlaufen. Nach beendeter Kupplung wärmt man auf 6o° auf, fällt den Farbstoff durch Kochsalz aus, filtriert, preßt und trocknet. Der Farbstoff erzeugt auf Wolle aus saurem Bade ein lebhaftes gelbstichiges Scharlach von ganz hervorragender Wasch-, Walk- und Lichtechtheit.The one prepared in the usual way from 2r, 2 parts of 4th - 4 "-diaminobenzophenone Tetrazo solution is poured into a cold solution to which excess soda has been added, while stirring Run in solution of 58 parts @ 2-6-naphtholsulfonate sodium. After finished Coupling is warmed to 60 °, the dye is precipitated by sodium chloride, filtered, presses and dries. The dye creates a lively effect on wool from an acid bath yellow-tinged scarlet fever of excellent washing, boiling and lightfastness.

In analoger Weise verfährt man bei Verwendung von 2 - 7-Naphtholsulfosäure.An analogous procedure is followed when using 2-7-naphtholsulphonic acid.

Claims (1)

PATENT-ANspRUcFT Abänderung des Verfahrens des Hauptpatents 33082q. zur Herstellung von Disazofarbstoften für Wolle, dadurch gekennzeichnet, daB man die Tetrazoverbindung des A - 4'-Diaminobenzophenons hier mit zwei Molekülen 2 . 6- oder 2 - 7-Naphtholsulfosäure kombiniert.PATENT CLAIM Modification of the procedure of the main patent 33082q. for the production of disazo dyes for wool, characterized in that one the tetrazo compound of A - 4'-diaminobenzophenone here with two molecules 2. 6- or 2-7-naphthol sulfonic acid combined.
DE1919333077D 1919-05-03 1919-05-03 Process for making disazo dyes for wool Expired DE333077C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE333077T 1919-05-03

Publications (1)

Publication Number Publication Date
DE333077C true DE333077C (en) 1921-02-16

Family

ID=6207473

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919333077D Expired DE333077C (en) 1919-05-03 1919-05-03 Process for making disazo dyes for wool

Country Status (1)

Country Link
DE (1) DE333077C (en)

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