DE723751C - Process for dyeing acetate rayon - Google Patents

Process for dyeing acetate rayon

Info

Publication number
DE723751C
DE723751C DEI55835D DEI0055835D DE723751C DE 723751 C DE723751 C DE 723751C DE I55835 D DEI55835 D DE I55835D DE I0055835 D DEI0055835 D DE I0055835D DE 723751 C DE723751 C DE 723751C
Authority
DE
Germany
Prior art keywords
acetate rayon
dyeing acetate
dyeing
yellow
rayon
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
DEI55835D
Other languages
German (de)
Inventor
Dr Heinrich Ritter
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI55835D priority Critical patent/DE723751C/en
Application granted granted Critical
Publication of DE723751C publication Critical patent/DE723751C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B51/00Nitro or nitroso dyes

Landscapes

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

Description

Verfahren zum Färben von Acetatkunstseide Es wurde gefunden, daß Kondensationsverbindungen der Diphenylaminreihe von. der allgemeinen Zusammensetzung worin X Wasserstoff, die OH-Gruppe oder eine Alkoxygruppe darstellt, zum Färben von Acetatkunstseide sehr gut .geeignet sind. Man erhält lebhafte, grünstichiggelbe bis orange Farbtöne von hervorragender Lichtechtheit. Beispiel z Acetatkunstseidewird bei 6o bis 75° C mit einer wässerigen Suspension von 2-Nitro-4-cyandiphenylamin (Berichte .der Deutschen Chemischen Gesellschaft, Band 49, S. 2229), das zweckmäßig im Gemisch mit einem Verteilungsmittel zur Herstellung des Färbebades angewandt wird, unter Zusatz von Seife gefärbt. Man erhält eine grünstichiggelbe Färbung von hervorragender Lichtechtheit. Die Kondensationsverbindung kann wie folgt verhalten werden: 18,5 kg i-Chlor-2-nitro-4-cyanbenzol werden mit 150 1 Alkohol und 2o kg Anilin mehrere Stunden unter Rückfluß zum Sieden erhitzt. Beim Erkalten scheidet sich das gebildete 2-Nitra-4-cyandiphenylamin in gelben Kristallen aus, die nach dem Umkristallisieren aus Methanol bei 126 bis z27° schmelzen.Method of dyeing acetate rayon It has been found that condensation compounds of the diphenylamine series of. the general composition where X represents hydrogen, the OH group or an alkoxy group, are very suitable for dyeing acetate rayon. Vibrant, greenish yellow to orange shades of excellent lightfastness are obtained. Example z Acetate rayon is made at 6o to 75 ° C with an aqueous suspension of 2-nitro-4-cyandiphenylamine (reports. Der Deutschen Chemischen Gesellschaft, Volume 49, p. 2229), which is expediently used in a mixture with a distributing agent for the preparation of the dyebath , colored with the addition of soap. A greenish yellow coloration of excellent lightfastness is obtained. The condensation compound can be behaved as follows: 18.5 kg of i-chloro-2-nitro-4-cyanobenzene are refluxed for several hours with 150 l of alcohol and 20 kg of aniline. On cooling, the 2-nitra-4-cyandiphenylamine formed separates out in yellow crystals which, after recrystallization from methanol, melt at 126 to z27 °.

Bei Verwendung der Kondensationsverbindung, die bei obiger Kondensation durch Ersatz des Anilins durch die äquimolekulare Menge i-Amino-4-methoxybenzol erhalten wird und eine aus Methanol in orangegelben Nadeln kristallisierende Verbindung vom F. i25° darstellt, wird Acetatkunstseide ebenfalls in gelben Tönen gefärbt.When using the condensation compound that occurs with the above condensation by replacing the aniline with the equimolecular amount of i-amino-4-methoxybenzene and a compound crystallizing from methanol in orange-yellow needles from the F. i25 ° represents, acetate rayon is also dyed in yellow tones.

Beispiel 2 Färbt man Acetatkunstsei@de, wie im Beispiel i angegeben, mit einer Suspension von 2-Nitro-4-cyan-q@-oxydiphenylamin, so erhält man eine orangegelbe Färbung von ebenfalls hervorragender Lichtechtheit.Example 2 If Acetatkunstsei @ de is dyed as indicated in Example i, with a suspension of 2-nitro-4-cyano-q @ -oxydiphenylamine, an orange-yellow color is obtained Coloring of also excellent lightfastness.

Die Kondensationsverbindung erhält man wie folgt: i$,5 kg i-Chlor-2-nitro-4-cyan- Benzol werden mit 1501 Alkohol und a5 kg r-Amino-q:-oxybenzol mehrere Stunden unter Rückfiuß zum Sieden erhitzt. Beim Abkühlen scheidet sich die Verbindung in orangegelben Kristallen aus, die, gegebenenfalls nach Z?rnkristallisieren aus Methanol, bei r75° schmelzen.The condensation compound is obtained as follows: 1.5 kg of i-chloro-2-nitro-4-cyano benzene are refluxed for several hours with 150 liters of alcohol and a5 kg of r-amino-q: -oxybenzene heated to boiling. On cooling, the compound separates into orange-yellow crystals which, if necessary after crystallization from methanol, melt at r75 °.

Claims (1)

PATENTANSPRUCH: Verfahren zum Färben von Acetatkunstseide, dadurch gekennzeichnet, daß man Kondensationsverbindungen von der allgemeinen Zusammensetzung worin X Wasserstoff, die OH-Gruppe oder eine Alkoxygruppe darstellt, in üblicher Weise aus wässeriger Suspension anwendet. Claim: Process for dyeing acetate rayon, characterized in that condensation compounds of the general composition wherein X represents hydrogen, the OH group or an alkoxy group, in the usual manner from aqueous suspension.
DEI55835D 1936-08-29 1936-08-29 Process for dyeing acetate rayon Expired DE723751C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI55835D DE723751C (en) 1936-08-29 1936-08-29 Process for dyeing acetate rayon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI55835D DE723751C (en) 1936-08-29 1936-08-29 Process for dyeing acetate rayon

Publications (1)

Publication Number Publication Date
DE723751C true DE723751C (en) 1942-08-10

Family

ID=7194227

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI55835D Expired DE723751C (en) 1936-08-29 1936-08-29 Process for dyeing acetate rayon

Country Status (1)

Country Link
DE (1) DE723751C (en)

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