DE492344C - Process for the production of a yellow-orange dyestuff - Google Patents

Process for the production of a yellow-orange dyestuff

Info

Publication number
DE492344C
DE492344C DEI31882D DEI0031882D DE492344C DE 492344 C DE492344 C DE 492344C DE I31882 D DEI31882 D DE I31882D DE I0031882 D DEI0031882 D DE I0031882D DE 492344 C DE492344 C DE 492344C
Authority
DE
Germany
Prior art keywords
yellow
production
sulfuric acid
orange
orange dyestuff
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
DEI31882D
Other languages
German (de)
Inventor
Dr Richard Herz
Dr Werner Zerweck
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.)
Sanofi Aventis Deutschland GmbH
Original Assignee
Leopold Cassella et Cie GmbH
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 Leopold Cassella et Cie GmbH filed Critical Leopold Cassella et Cie GmbH
Priority to DEI31882D priority Critical patent/DE492344C/en
Application granted granted Critical
Publication of DE492344C publication Critical patent/DE492344C/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/60—Anthanthrones
    • C09B3/64—Preparation from starting materials already containing the anthanthrone nucleus
    • C09B3/66—Preparation from starting materials already containing the anthanthrone nucleus by halogenation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung eines gelborangen Küpenfarbstoffes Zusatz zum Patent 458 598 In dem -Patent 458 598 und seinen Zusätzen ist ein Verfahren zur Herstellung von orangen Küpenfarbstoffen durch Einwirkung von Halogenen (Chlor oder Brom) auf Anthanthron unter milden Bedingungen beschrieben.Process for the production of a yellow-orange vat dye additive to Patent 458,598 In the -Patent 458,598 and its additions is a process for the production of orange vat dyes through the action of halogens (chlorine or bromine) on anthanthrone under mild conditions.

Es hat sich nun gezeigt, daß man in technisch sehr einfacher Weise ein lebhaft färbendes Dichloranthanthron erhält, wenn man die Chlorierung in einer Schwefelsäure von mäßigem Wassergehalt vornimmt. Es hat dies den Vorteil, daß sich bei Beendigung der Reaktion das Chlorierungsprodukt als unlösliches kristallinisches Sulfat aus der Reaktionsmasse abscheidet, während Nebenprodukte in der schwefelsauren Mutterlauge gelöst bleiben. Zweckmäßig verwendet man hierbei eine Schwefelsäure von etwa 85 bis 95 °/o" Beispiel i Teil Anthanthron löst man in jo Teilen konzentrierter Schwefelsäure und gibt so viel Wasser zu, daß eine etwa goprozentige Schwefelsäure entsteht, dann fügt man zweckmäßig einen Chlorüberträger,wie Jod, Eisenchlorid, Eisenvitriol usw., zu und leitet unter gutem Rühren bei 45 bis 5o° so lange Chlor ein, bis eine Probe nach dein Abkühlen und Filtrieren in der Mutterlauge kein Ausgangsmaterial mehr enthält. Man läßt erkalten und isoliert das in violettschwarzen Kristallen ausgeschiedene Produkt in der üblichen Weise, z. B. durch Filtrieren oder Zentrifugieren, und wäscht mit etwa 85prozentiger Schwefelsäure bis zum farblosen Ablauf nach. Zur Entfernung der Schwefelsäure wird das Filtriergut in Wasser eingetragen, abgesaugt, säurefrei gewaschen und getrocknet. Man erhält so ein oranges Pulver, das sich in konzentrierter Schwefelsäure mit rein grüner Farbe löst und das die pflanzliche Faser aus violetter Hydrosulfitküpe nach dem Verhängen oder Seifen in leuchtend gelboranger Nuance färbt.It has now been shown that in a technically very simple manner a vividly coloring dichloranthanthrone is obtained if the chlorination is carried out in a Sulfuric acid with a moderate water content. It has the advantage that on completion of the reaction the chlorination product as insoluble crystalline Sulphate separates from the reaction mass, while by-products in the sulfuric acid Mother liquor remain dissolved. A sulfuric acid is expediently used here from about 85 to 95 per cent. Example 1 part anthanthrone is dissolved in more concentrated form in jo parts Sulfuric acid and adds so much water that about gop% sulfuric acid arises, then it is expedient to add a chlorine carrier, such as iodine, iron chloride, Iron vitriol, etc., and passes in chlorine while stirring well at 45 ° to 50 ° one until a sample is not starting material after cooling and filtering in the mother liquor contains more. It is allowed to cool and is isolated in violet-black crystals excreted product in the usual way, e.g. B. by filtering or centrifuging, and washes with about 85 percent sulfuric acid until it is colorless. To the Removal of the sulfuric acid, the material to be filtered is added to water, suctioned off, washed acid-free and dried. This gives an orange powder that is in concentrated sulfuric acid with a pure green color and dissolves the vegetable Fiber from violet hydrosulphite vat after hanging or soapy in glowing colors yellow-orange.

Berechnet für ein Dichloranthanthron: 18,93 °h Chlor, gefunden: j9,o2 °/o Chlor.Calculated for a dichloranthanthrone: 18.93 ° h chlorine, found: j9, o2 ° / o chlorine.

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung` des Verfahrens zur Herstellung eines--gelborangen Küpenfarbstoffes nach Patent 458598, dadurch gekennzeichnet, daß man die Chlorierung des Anthanthrons in einer Schwefelsäure von mäßigem Wassergehalt, zweckmäßig in einer etwa 85 bis 95prozentigen Schwefelsäure, vornimmt.PATENT CLAIM: Further development of the process for the production of a yellow- orange vat dye according to patent 458598, characterized in that the anthanthrone is chlorinated in a sulfuric acid with a moderate water content, expediently in about 85 to 95 percent sulfuric acid.
DEI31882D 1927-08-12 1927-08-12 Process for the production of a yellow-orange dyestuff Expired DE492344C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI31882D DE492344C (en) 1927-08-12 1927-08-12 Process for the production of a yellow-orange dyestuff

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI31882D DE492344C (en) 1927-08-12 1927-08-12 Process for the production of a yellow-orange dyestuff

Publications (1)

Publication Number Publication Date
DE492344C true DE492344C (en) 1930-02-21

Family

ID=7187998

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI31882D Expired DE492344C (en) 1927-08-12 1927-08-12 Process for the production of a yellow-orange dyestuff

Country Status (1)

Country Link
DE (1) DE492344C (en)

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