CH116336A - Process for preparing non-caking vat dye pastes. - Google Patents

Process for preparing non-caking vat dye pastes.

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Publication number
CH116336A
CH116336A CH116336DA CH116336A CH 116336 A CH116336 A CH 116336A CH 116336D A CH116336D A CH 116336DA CH 116336 A CH116336 A CH 116336A
Authority
CH
Switzerland
Prior art keywords
caking
pastes
vat dye
preparing non
dye pastes
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 CH116336A publication Critical patent/CH116336A/en

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Description

  

  Verfahren zur Darstellung nicht     zusammenbackender        ICüpenfarbstoffpasten.       Viele wasserunlösliche     Küpenfarbstoffe     zeigen die unangenehme Eigenschaft, dass sie  nach kürzerem oder längerem Stehen aus  ihren Pasten sich absetzen und dann oft zu  zähen Massen zusammenbacken, die sich nur  schwer     wieder    zu homogenen     Pasten    anrüh  ren lassen.  



  Es hat sich nun gezeigt, dass dieses Zu  sammenbacken verhindert und in vielen Fäl  len auch das Absetzen vermieden werden  kann, wenn man den     .Farbpasten    geringe  Mengen von     Permanganaten    zusetzt.  



  <I>Beispiel 1:</I>  500 Teile     Indanthrenorange        RRT    Teig  (10%) werden unter gutem Rühren mit einer  konzentrierten wässerigen Lösung von 0,25  Teilen     Kaliumpermanganat    versetzt. Die  homogene Suspension bleibt sehr lange er  halten, und es tritt nur ein mässiges Ab  setzen des Farbstoffes und kein Zusammen  backen     ein.     



       Beispiel   <I>2:</I>  500 Teile     Indanthrenblau    RS Teig       (10%)    werden unter gutem Rühren mit einer       konzentrierten    wässerigen Lösung von 0,5    Teilen Kaliumpermanganat versetzt. Auch  nach längerem Stehen lässt sich die Paste  wieder leicht anrühren, während     die    nicht  mit     Permanganat    versetzte Paste eine zähe  Masse abgeschieden hat.    <I>Beispiel 3:</I>  500 Teile Indigo RB 40%ig werden un  ter gutem Rühren mit einer konzentrierten       wässerigen    Lösung von 1 Teil Kaliumper  manganat versetzt. Die Wirkung ist die  gleiche wie die in den vorhergehenden Bei  spielen beschriebene.  



  Bei andern     Farbstoffpasten    und     Perman-          ganaten    ist das zweckmässigste Mengenver  hältnis jeweils von Fall zu Fall verschieden  und leicht zu ermitteln.



  Process for preparing non-caking vat dye pastes. Many water-insoluble vat dyes have the unpleasant property that they settle out of their pastes after standing for a short or long period and then often bake together to form viscous masses that are difficult to mix back into homogeneous pastes.



  It has now been shown that this caking can be prevented and, in many cases, settling can also be avoided if small amounts of permanganates are added to the color pastes.



  <I> Example 1 </I> 500 parts of indanthrene orange RRT dough (10%) are mixed with a concentrated aqueous solution of 0.25 part of potassium permanganate with thorough stirring. The homogeneous suspension remains for a very long time, and there is only a moderate amount of dye and no baking together.



       Example <I> 2: </I> 500 parts of indanthrene blue RS dough (10%) are mixed with a concentrated aqueous solution of 0.5 part of potassium permanganate while stirring well. Even after standing for a long time, the paste can be easily stirred again, while the paste not mixed with permanganate has deposited a viscous mass. <I> Example 3: </I> 500 parts of Indigo RB 40% strength are mixed with a concentrated aqueous solution of 1 part of potassium per manganate with thorough stirring. The effect is the same as that described in the previous examples.



  In the case of other dye pastes and permanents, the most appropriate proportions differ from case to case and can be easily determined.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung nicht zusam menbackender Küpenfarbstoffpasten, da durch gekennzeichnet, dass man den Pasten Permanganate zusetzt. PATENT CLAIM: Process for the representation of non-caking vat dye pastes, characterized by the fact that permanganates are added to the pastes.
CH116336D 1924-09-17 1925-05-25 Process for preparing non-caking vat dye pastes. CH116336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE116336X 1924-09-17

Publications (1)

Publication Number Publication Date
CH116336A true CH116336A (en) 1926-09-01

Family

ID=5654657

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116336D CH116336A (en) 1924-09-17 1925-05-25 Process for preparing non-caking vat dye pastes.

Country Status (1)

Country Link
CH (1) CH116336A (en)

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