DE630701C - Process for the preparation of a copper-containing disazo dye - Google Patents

Process for the preparation of a copper-containing disazo dye

Info

Publication number
DE630701C
DE630701C DEI51876D DEI0051876D DE630701C DE 630701 C DE630701 C DE 630701C DE I51876 D DEI51876 D DE I51876D DE I0051876 D DEI0051876 D DE I0051876D DE 630701 C DE630701 C DE 630701C
Authority
DE
Germany
Prior art keywords
copper
parts
preparation
disazo dye
dye
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
DEI51876D
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of DE630701C publication Critical patent/DE630701C/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

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

Description

Verfahren zur Herstellung eines kupferhaltigen Disazofarbstoffs Erfindungsgemäß wird ein neuer kupferhaltiger substantiver Disazofarbstoff durch Umsetzen von 2 Mol. dianotierter 6-Chlor-2-amino-i-oxybenzol-4-sulfonsäure mit i Mol: des Harnstoffs aus 2-Amino-5-oxynaphthalin--sulfonsäiire in wäßriger, alkalischer Lösung imd Behandeln des so entstandenen Farbstoffs Mit Kupfer oder einem kupferabgebenden Mittel hergestellt. Die Umsetzung findet leicht statt, und der kupferhaltige Farbstoff färbt Baumwolle in bläulichrotem Farbton von sehr guter Lichtechtheit. In dem folgenden Beispiel sind die Teile Gewichtsteile.Process for the preparation of a copper-containing disazo dye according to the invention a new substantive disazo dye containing copper is created by reacting 2 Mol. Dianotated 6-chloro-2-amino-i-oxybenzene-4-sulfonic acid with 1 mole: of urea from 2-amino-5-oxynaphthalene sulfonic acid in aqueous, alkaline solution and treatment of the resulting dye Made with copper or a copper donor. The reaction takes place easily and the copper-containing dye dyes cotton in a bluish red shade of very good lightfastness. In the following example the parts are parts by weight.

Der neue, erfindungsgemäß hergestellte Farbstoff ist den aus der Patentschrift 33 5 8 o9 bekannten nächstliegenden Farbstoffen im Ziehvermögen auf Cellulosefasern sowie in der Wasch- und Lichtechtheit überlegen.The new dye prepared according to the invention is that from the patent 33 5 8 o9 known closest dyes in the drawability on cellulose fibers as well as superior in washing and lightfastness.

Beispiel 22,35 Teile 6-Chlor-2-amino-i-oxybenzol-4-sulfonsäure werden durch Erwärmen in 4oo Teilen Wasser aufgelöst. Die Lösung wird durch Zusatz von 25 Teilen 36prozentiger Chlorwasserstoffsäure deutlich kongosauer gemacht. Alsdann wird auf 5° C abgekühlt und bei dieser Temperatur mit 6,9 Teilen Natriumnitrit dianotiert. ' Die Diazolösung wird dann unter Umrühren einer Lösung von 25,2 Teilen 5, 5`-Dioxy-2, 2'-dinaphthylharnstoff-7, 7'-disulfonsäure in 4oo Teilen Wasser, das 5o Teile wasserfreies Natriumcarbonat enthält und eine Temperatur von io° C besitzt, zugesetzt.Example 22.35 parts of 6-chloro-2-amino-i-oxybenzene-4-sulfonic acid become dissolved by heating in 400 parts of water. The solution is made by adding 25 parts of 36 percent hydrochloric acid made distinctly Congo acidic. Then is cooled to 5 ° C and dianotized at this temperature with 6.9 parts of sodium nitrite. 'The diazo solution is then stirred into a solution of 25.2 parts of 5,5'-dioxy-2, 2'-dinaphthylurea-7, 7'-disulfonic acid in 400 parts of water, the 5o parts anhydrous Contains sodium carbonate and has a temperature of 10 ° C, added.

Es entsteht eine rötlichblaue Lösung. Nach beendeter Kupplung wird der Farbstoff durch Neutralisieren und Zusatz von Natriumchlorid ausgefällt und abfiltriert. Die Farbstoffpaste wird in iooo Teilen warmem Wasser wieder aufgelöst. Dann wird eine Lösung von 25 Teilen kristallisiertem Kupfersulfat in ioo Teilen Wasser zugesetzt und die Mischung ungefähr i Stunde lang gekocht. Alsdann setzt man genügend wasserfreies Natriumcarbonat bis zur lackmusalkalischen Reaktion zu, filtriert die Kupferkomplexverbindung des Farbstoffs ab, trocknet und mahlt sie.A reddish-blue solution is created. After the coupling is completed the dye precipitated by neutralizing and adding sodium chloride and filtered off. The dye paste is redissolved in 1,000 parts of warm water. Then a solution of 25 parts of crystallized copper sulfate in 100 parts Added water and boiled the mixture for about an hour. Then sit down you add enough anhydrous sodium carbonate until the litmus-alkaline reaction occurs, filters the copper complex compound of the dye, dries and grinds it.

Der so erhaltene Farbstoff färbt Baumwolle in bläulichrotem Farbton von ausgezeichneter Lichtechtheit.The dye thus obtained dyes cotton in a bluish red shade of excellent lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupferhaltigen Disazofarbstoffs, dadurch gekennzeichnet, daß man i Mol. 5, 5'-Dioxy-2, 2'-dinaphthylharnstoff-7, 7'-disulfonsäure in alkalischer Lösung mit 2 Mol. dianotierter 6-Chlor-2-amino-i-oxybenzol-4-sulfonsäure vereinigt und den erhaltenen Disazofarbstoff mit Kupfer oder einem-kupferabgebenden Mittel behandelt. Claim: Process for the preparation of a copper-containing disazo dye, characterized in that i mol. 5, 5'-dioxy-2, 2'-dinaphthylurea-7, 7'-disulfonic acid in alkaline solution with 2 mol. Of dianotated 6-chloro-2 -amino-i-oxybenzene-4-sulfonic acid combined and treated the disazo dye obtained with copper or a copper-donating agent.
DEI51876D 1934-03-19 1935-03-15 Process for the preparation of a copper-containing disazo dye Expired DE630701C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB630701X 1934-03-19

Publications (1)

Publication Number Publication Date
DE630701C true DE630701C (en) 1936-06-04

Family

ID=10488744

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI51876D Expired DE630701C (en) 1934-03-19 1935-03-15 Process for the preparation of a copper-containing disazo dye

Country Status (1)

Country Link
DE (1) DE630701C (en)

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