CH101759A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH101759A
CH101759A CH101759DA CH101759A CH 101759 A CH101759 A CH 101759A CH 101759D A CH101759D A CH 101759DA CH 101759 A CH101759 A CH 101759A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
dye
red
violet
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Kalle Co
Original Assignee
Kalle & Co 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 Kalle & Co Ag filed Critical Kalle & Co Ag
Publication of CH101759A publication Critical patent/CH101759A/en

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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/62—Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series

Description

  

      Verfahren    zur Darstellung eines     Itäpenfarbstoffes.       Es ist gefunden worden, dass man durch  Kondensation     voll        Perylen-3.4.9.10-tetra-          carbonsäitre    mit     m-Xylidin        (1-Amino-2.4-          dimethylbenzol)    einen wertvollen     Küpen-          farbstoff    erhält.  



       Beispiel:     392     Geurichtsteile        Perylentetracarbon-          säureanhy        drid    werden mit etwa 3000 Ge  wichtsteilen     m-Xylidin    unter Rühren auf  etwa 190   bis zum Verschwinden des     Pe-          rylentetracarbonsäureanhydrids    erhitzt. Man  lässt dann auf etwa<B>70'</B> abkühlen, rührt  etwa 3000 Gewichtsteile Alkohol ein und  filtriert. Der zurückbleibende     Farbstoff    wird  mit Alkohol gewaschen und dann mit heisser  verdünnter     Alkalilauge    extrahiert.  



  Er bildet rote     Kriställchen,    die sich in    konzentrierter Schwefelsäure     mit    violetter  Farbe lösen und aus rotvioletter     Hydrosulfit-          kUpe    auf Baumwolle rote Nuancen erzeugen.



      Process for the preparation of an itapene dye. It has been found that a valuable vat dye is obtained by condensation of full perylene-3.4.9.10-tetracarboxylic acid with m-xylidine (1-amino-2,4-dimethylbenzene).



       Example: 392 parts by weight of perylenetetracarboxylic acid anhydride are heated with about 3000 parts by weight of m-xylidine with stirring to about 190 until the perylenetetracarboxylic acid anhydride has disappeared. It is then allowed to cool to about 70 ', about 3000 parts by weight of alcohol are stirred in and filtered. The remaining dye is washed with alcohol and then extracted with hot, dilute alkali lye.



  It forms red crystals that dissolve in concentrated sulfuric acid with a violet color and turn red-violet hydrosulphite cap onto cotton to create red nuances.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man Perylentetracarbonsäure mit m-Xylidin (1-Amino-2.4-dimethylbenzol) kondensiert, wobei man einen Farbstoff in roten Kriställ- chen erhält, der in konzentrierter Schwefel säure violett löslich ist -und aus rotvioletter Hydrosulfitküpe auf Baumwolle eine rote Ausfärbung hervorbringt. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that perylenetetracarboxylic acid is condensed with m-xylidine (1-amino-2,4-dimethylbenzene), a dye being obtained in red crystals which is violet-soluble in concentrated sulfuric acid -and produces a red color from the red-violet hydrosulfite vat on cotton.
CH101759D 1923-01-03 1923-01-03 Process for the preparation of a vat dye. CH101759A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100706T 1923-01-03
CH101759T 1923-01-03

Publications (1)

Publication Number Publication Date
CH101759A true CH101759A (en) 1923-10-16

Family

ID=25705882

Family Applications (1)

Application Number Title Priority Date Filing Date
CH101759D CH101759A (en) 1923-01-03 1923-01-03 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH101759A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543747A (en) * 1948-08-27 1951-03-06 Gen Aniline & Film Corp Preparation of n.n'-diaryl derivatives of perylene diimid
DE1031449B (en) * 1955-06-13 1958-06-04 Bayer Ag Process for the production of Kuepen dyes
US2905685A (en) * 1956-03-22 1959-09-22 Hoechst Ag New dyestuff of the perylene tetracarboxylic acid series
DE1094897B (en) * 1959-07-31 1960-12-15 Basf Ag Process for producing a pigment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543747A (en) * 1948-08-27 1951-03-06 Gen Aniline & Film Corp Preparation of n.n'-diaryl derivatives of perylene diimid
DE1031449B (en) * 1955-06-13 1958-06-04 Bayer Ag Process for the production of Kuepen dyes
US2905685A (en) * 1956-03-22 1959-09-22 Hoechst Ag New dyestuff of the perylene tetracarboxylic acid series
DE1094897B (en) * 1959-07-31 1960-12-15 Basf Ag Process for producing a pigment

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