DE321119C - Process for the production of leuco compounds of the Kuepen dyes suitable for dyeing wool - Google Patents

Process for the production of leuco compounds of the Kuepen dyes suitable for dyeing wool

Info

Publication number
DE321119C
DE321119C DE1915321119D DE321119DD DE321119C DE 321119 C DE321119 C DE 321119C DE 1915321119 D DE1915321119 D DE 1915321119D DE 321119D D DE321119D D DE 321119DD DE 321119 C DE321119 C DE 321119C
Authority
DE
Germany
Prior art keywords
leuco compounds
production
dyes suitable
dyeing wool
kuepen dyes
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
DE1915321119D
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.)
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
Application granted granted Critical
Publication of DE321119C publication Critical patent/DE321119C/en
Expired legal-status Critical Current

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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
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes

Landscapes

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

Description

Verfahren zur Herstellung von zum Färben der Wolle geeigneten Leukoverbindungen der Küpenfarbstoffe. Es hat sich gezeigt, daß die zum Färben der Wolle erforderlichen Leukoverbindungen der Küpenfarbstoffe in sehr gut gleichmäßiger Teigform hergestellt werden können, wenn sie unter Zusatz von höheren Alkoholen, die aus ihren wässerigen Lösungen aussalzbar sind, bereitet werden.Process for the preparation of leuco compounds suitable for dyeing wool the vat dyes. It has been shown that the necessary for dyeing the wool Leuco compounds of vat dyes produced in a very even dough shape Can be if they are with the addition of higher alcohols that make their watery Solutions that can be salted out must be prepared.

Als sehr gut geeignet haben sich hierzu beispielsweise Propyl-, Butyl-.und Amylalkohol erwiesen.Propyl, butyl, and Amyl alcohol proved.

Bei der .Herstellung der Leukoverbindungen wurden Glyzerin und gewöhnliche Alkohole wohl schon als Zusätze, um eine Kristallisation zu verhindern, verwendet. Im vorliegenden Falle handelt es sich jedoch um die Anwendung der höheren Alkohole, die aus der wässerigen Lösung aussalzbar sind, um zu erreichen, daß die Leukoverbindungen gemeinsam mit dem Alkohol in möglichst wasserfreier Form. abgeschieden werden, während bei Anwendung von Glyzerin und den gewöhnlichen Alkoholen, die aus wässerigen Lösungen nicht aussalzbar sind, eine solche Abscheidung nicht eintritt. Beispiel: 38o Teile einer 2o prozentigen Paste von.In the production of the leuco compounds, glycerine and ordinary Alcohols have probably already been used as additives to prevent crystallization. In the present case, however, it is about the use of the higher alcohols, which can be salted out from the aqueous solution in order to achieve that the leuco compounds together with the alcohol in as anhydrous form as possible. be deposited while when using glycerine and common alcohols obtained from aqueous solutions cannot be salted out, such a deposition does not occur. Example: 38o parts a 2o percent paste of.

Thioindigorot B werden mit Natronlauge und Hydrosulfit in üblicher Weise reduziert. ' Der abgekühlte Reduktionsteig wird angesäuert, die erhaltene Leukoverbindung möglichst unter Luftabschluß abgesaugt oder abgepreßt und mit 7o Teilen Natronlauge -.o° Be und 8o Teilen Isobutylalkohol innig vermischt. Nach etwa 24stündigem Stehen .zieht man die untenstehende wässerige Schicht ab, während die obere Schicht die Leukoverbindung, in Alkohol gelöst oder suspendiert, enthält und so leicht in haltbare Teigform gebracht werden kann. Durch Zusatz von Kochsalz oder ähnlichen Salzen kann die Abscheidung befördert werden.Thioindigo red B is made with caustic soda and hydrosulfite in the usual way Way reduced. 'The cooled reduction paste is acidified, the obtained Leukocompound sucked or squeezed out, if possible with exclusion of air, and with 7o Parts of sodium hydroxide solution -.o ° Be and 80 parts of isobutyl alcohol are intimately mixed. After about Standing for 24 hours, peel off the watery layer below, while the upper layer contains the leuco compound, dissolved or suspended in alcohol, and so easily can be made into a durable dough shape. By adding table salt or similar salts can promote the separation.

Die Teige der Leukoverbindungen sollen vornehmlich zum Färben der Wolle dienen.The doughs of the leuco compounds are intended primarily for coloring the Serving wool.

Claims (1)

PATEXT-A151'hUCH: Verfahren zur Herstellung von zum 1#ärben der Walle geeigneten Leukoverbindungen der Küpenfarbstoffe, dadurch gekennzeichnet, daß die Lettkoverbindungen unter Zugabe höherer Alkohole, die aus wässerigen Lösungen aussalzbar sind, hergestellt werden, um die Leukoverbindungen gemeinsam mit dien Alkoholen abscheiden zu können.PATEXT-A151'hUCH: Process for the production of 1 # graining of the wall suitable leuco compounds of the vat dyes, characterized in that the Lettko compounds with the addition of higher alcohols, which can be salted out from aqueous solutions are made to combine the leuco compounds with the alcohols to be able to separate.
DE1915321119D 1915-11-16 1915-11-16 Process for the production of leuco compounds of the Kuepen dyes suitable for dyeing wool Expired DE321119C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE321119T 1915-11-16

Publications (1)

Publication Number Publication Date
DE321119C true DE321119C (en) 1920-05-17

Family

ID=6159396

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1915321119D Expired DE321119C (en) 1915-11-16 1915-11-16 Process for the production of leuco compounds of the Kuepen dyes suitable for dyeing wool

Country Status (1)

Country Link
DE (1) DE321119C (en)

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