AT111237B - Manufacture of dye inks. - Google Patents

Manufacture of dye inks.

Info

Publication number
AT111237B
AT111237B AT111237DA AT111237B AT 111237 B AT111237 B AT 111237B AT 111237D A AT111237D A AT 111237DA AT 111237 B AT111237 B AT 111237B
Authority
AT
Austria
Prior art keywords
manufacture
dye inks
inks
formaldehyde
dye
Prior art date
Application number
Other languages
German (de)
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
Application granted granted Critical
Publication of AT111237B publication Critical patent/AT111237B/en

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  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Herstellung von Farbstoff tinten. 



   Ausser den bekannten Eisen-Gallus-und Blauholz-Chrom-Tinten sind auch schon Farbstofftinten in grossem Umfange verwendet worden. Bei Verwendung von Farbstoffen als Tinten müssen stets besondere
Massnahmen getroffen werden, um die Schrift wasserecht zu machen. 



   Es wurde nun gefunden, dass man eine Tinte erhalten kann, deren Schrift schnell wasserecht wird, indem man den, zweckmässig freies Alkali enthaltenden, wässrigen Lösungen substantiver Farbstoffe geringe Mengen Formaldehyd oder Formaldehyd abspaltende Mittel zusetzt. Auf den Zusatz von Alkali kann besonders dann verzichtet werden, wenn die Farbstoffe freie Amino-oder Hydroxylgruppen ent- halten. 



   Den Tinten, die frei von Niederschlägen und möglichst salzarm sein sollen, können geeignete Verbindungen, wie Glyzerin, Alkohol, Phenol, Tannin usw. zugesetzt werden, um die Trockendauer, die Leicht- flüssigkeit usw., zu verändern. 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 
1000 em3. Die mit dieser Tinte hergestellte Schrift ist nach kurzer Zeit wasserecht und auch sehr bald echt gegen verdünnte Alkalien. 



   Beispiel 2 : Etwa   12 g   eines Farbstoffes der im Beispiel 1 gegebenen allgemeinen Formel werden in 950   cm3   kochendem destilliertem Wasser gelöst. Nach dem Erkalten und Filtrieren setzt man 50   cm3     30%ige Formaldehydlösung   zu und stellt dann die Lösung auf 1000 em3. Die mit der Tinte hergestellte
Schrift ist nach kurzer Zeit   völlig wasserecht.   



   Beispiel 3 : Etwa 10 eines Farbstoffs der allgemeinen Formel :   p-Diamin-azo- Aminophenol-     äther-azo#Aminooxynaphtalinsulfosäure   (Ammoniumsalz) werden in   950cm3 kochendem   destillierten
Wasser gelöst. Nach dem Erkalten und Filtrieren setzt man 50   ern     30% ige Formaldehydiosung   zu. Die mit der Tinte hergestellte Schrift ist sofort nach dem Trocknen echt gegen Wasser und gegen verdünnte
Alkalien. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Manufacture of dye inks.



   In addition to the well-known iron-gallus and bluewood-chrome inks, dye inks have also been used on a large scale. When using dyes as inks must always be special
Measures are taken to make the font water-proof.



   It has now been found that an ink can be obtained whose writing quickly becomes waterfast by adding small amounts of formaldehyde or formaldehyde-releasing agents to the aqueous solutions of substantive dyes, suitably containing free alkali. The addition of alkali can be dispensed with especially when the dyes contain free amino or hydroxyl groups.



   Suitable compounds such as glycerine, alcohol, phenol, tannin, etc. can be added to the inks, which should be free of precipitation and as low in salt as possible, in order to change the drying time, the light fluidity, etc.
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 
1000 em3. The writing produced with this ink is waterfast after a short time and very soon also real against diluted alkalis.



   Example 2: About 12 g of a dye of the general formula given in Example 1 are dissolved in 950 cm3 of boiling distilled water. After cooling and filtering, 50 cm3 of 30% formaldehyde solution are added and the solution is then adjusted to 1000 cm3. The one made with the ink
After a short time, writing is completely watertight.



   Example 3: About 10 of a dye of the general formula: p-diamine-azo-aminophenol ether-azo # Aminooxynaphthalene sulfonic acid (ammonium salt) are distilled in 950 cm3 of boiling
Dissolved water. After cooling and filtering, 50% strength formaldehyde solution is added. The writing produced with the ink is immediately after drying against water and against diluted ones
Alkalis.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Farbstofftinten, bestehend aus Lösungen substantiver Farbstoffe, dadurch gekennzeichnet, dass man diesen Lösungen Formaldehyd oder Formaldehyd abspaltende Mittel zusetzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of dye inks, consisting of solutions of substantive dyes, characterized in that formaldehyde or formaldehyde-releasing agents are added to these solutions. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT111237D 1925-01-13 1925-12-04 Manufacture of dye inks. AT111237B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE111237X 1925-01-13

Publications (1)

Publication Number Publication Date
AT111237B true AT111237B (en) 1928-11-10

Family

ID=5652449

Family Applications (1)

Application Number Title Priority Date Filing Date
AT111237D AT111237B (en) 1925-01-13 1925-12-04 Manufacture of dye inks.

Country Status (1)

Country Link
AT (1) AT111237B (en)

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