CH140716A - Process for the preparation of an acetate silk dye. - Google Patents

Process for the preparation of an acetate silk dye.

Info

Publication number
CH140716A
CH140716A CH140716DA CH140716A CH 140716 A CH140716 A CH 140716A CH 140716D A CH140716D A CH 140716DA CH 140716 A CH140716 A CH 140716A
Authority
CH
Switzerland
Prior art keywords
preparation
acetate silk
dye
silk dye
aminonaphthalic
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH140716A publication Critical patent/CH140716A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     Acetatseidenfarbstoffes.       Es wurde gefunden, dass man zum Fär  ben von     Celluloseestern    oder     -äthern    oder  deren     Umwandlungsprodukten    geeignete Farb  stoffe erhält, wenn man     4-Aminonaphtal-          säureanhydrid    mit Ammoniak,     aliphatischen     oder aromatischen Aminen kondensiert. Diese  Kondensationsprodukte haben die allgemeine  Formel  
EMI0001.0008     
    wobei X Wasserstoff,     Alkyl,        Aryl    oder     Aral-          kyl    bedeutet.

   Die genannten Derivate färben  aus kolloidaler Lösung oder wässeriger Sus  pension mit oder ohne Zusatz von Schutz-    kolloiden, Salzen, Säuren oder Alkalien       Celluloseester    oder     -äther    in klaren gelben  Tönen.  



  Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Darstellung eines       Acetatseidenfarbstoffes,    welches dadurch ge  kennzeichnet ist, dass man     4-Aminonaphtal-          säureanhydrid    mit     asymetrischem        m-Xylidin     kondensiert.         Beispiel:       30 Gewichtsteile     4-Aminonaphtalsäurean-          hydrid    werden mit 90 Gewichtsteilen     asy-          metrischem        m-Xylidin    4-5 Stunden unter       Rückfluss    zum Sieden erhitzt.  



  Nach dem Erkalten wird das Konden  sationsprodukt abgesaugt, zuerst mit     asy-          metrischem        m-Xylidin,    dann mit Sprit ge  waschen. Es stellt ein goldgelbes Produkt  dar, welches nach einmaligem     Umlösen    aus  Eisessig bei 268      C-270     C schmilzt.      Es färbt     Celluloseester,        -äther    oder deren       Umwandlungsprodukte    in einem äusserst       grünstichigen    Gelb von     prächtigerFluoreszenz.  



  Process for the preparation of an acetate silk dye. It has been found that dyes suitable for dyeing cellulose esters or ethers or their conversion products are obtained if 4-aminonaphthalic anhydride is condensed with ammonia, aliphatic or aromatic amines. These condensation products have the general formula
EMI0001.0008
    where X is hydrogen, alkyl, aryl or aralkyl.

   The derivatives mentioned color cellulose esters or ethers in clear yellow shades from colloidal solution or aqueous suspension with or without the addition of protective colloids, salts, acids or alkalis.



  The present invention relates to a process for the preparation of an acetate silk dye, which is characterized in that 4-aminonaphthalic anhydride is condensed with asymmetrical m-xylidine. Example: 30 parts by weight of 4-aminonaphthalic anhydride are refluxed with 90 parts by weight of asymmetrical m-xylidine for 4-5 hours.



  After cooling, the condensation product is sucked off, washed first with asymmetrical m-xylidine, then with syringe. It is a golden yellow product, which melts at 268 ° C-270 ° C after being dissolved once from glacial acetic acid. It colors cellulose esters, ethers or their conversion products in an extremely greenish yellow with a magnificent fluorescence.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Acetat seidenfarbstoffes, dadurch gekennzeichnet, das man 4-Aminonaphtalsäureanhydrid mit asymetrischem m-gylidin kondensiert. Der Farbstoff stellt ein goldgelbes Produkt dar, welches nach einmaligem Umlösen aus Eis essig bei 268 C-270 C schmilzt. Es färbt Celluloseester, -äther oder deren Qmwandlungqprodukte in einem äusserst grünstichigen Grelb von prächtigerFluoreszenz. Claim: Process for the preparation of an acetate silk dye, characterized in that 4-aminonaphthalic anhydride is condensed with asymmetrical m-gylidine. The dye is a golden yellow product which melts at 268 ° C-270 ° C after being dissolved once from glacial vinegar. It colors cellulose esters, ethers or their conversion products in an extremely greenish yellow with splendid fluorescence.
CH140716D 1928-01-25 1929-01-23 Process for the preparation of an acetate silk dye. CH140716A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE140716X 1928-01-25
CH140716T 1929-01-23

Publications (1)

Publication Number Publication Date
CH140716A true CH140716A (en) 1930-06-30

Family

ID=25713580

Family Applications (1)

Application Number Title Priority Date Filing Date
CH140716D CH140716A (en) 1928-01-25 1929-01-23 Process for the preparation of an acetate silk dye.

Country Status (1)

Country Link
CH (1) CH140716A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235045A (en) * 1992-03-19 1993-08-10 Microbiomed Corporation Non-azo naphthalimide dyes
US5766600A (en) * 1993-08-09 1998-06-16 Microbiomed Corporation Non-azo naphtalimide dyes and uses for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235045A (en) * 1992-03-19 1993-08-10 Microbiomed Corporation Non-azo naphthalimide dyes
US5565551A (en) * 1992-03-19 1996-10-15 Microbiomed Corporation Non-azo naphthalimide dyes and uses for same
US5766600A (en) * 1993-08-09 1998-06-16 Microbiomed Corporation Non-azo naphtalimide dyes and uses for same

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