DE355737C - Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products - Google Patents

Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products

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Publication number
DE355737C
DE355737C DEF38614D DEF0038614D DE355737C DE 355737 C DE355737 C DE 355737C DE F38614 D DEF38614 D DE F38614D DE F0038614 D DEF0038614 D DE F0038614D DE 355737 C DE355737 C DE 355737C
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Germany
Prior art keywords
dihydro
colloidal
substitution products
preparation
azine
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Expired
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DEF38614D
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German (de)
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Hoechst AG
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Hoechst AG
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Priority to DEF38614D priority Critical patent/DE355737C/en
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Publication of DE355737C publication Critical patent/DE355737C/en
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Description

Verfahren zur Herstellung von kolloiden N-Dihydro-1, 2, 21, 11-anthrachinonazin oder dessen Substitutionsprodukten. In den Patentschriften 31372q. und 31q.209 war u. a. beschrieben worden, daß man durch Behandeln von N-Dihydro-1, 2, 21, 1'-anthrachinonazin oder dessen Substitutionsprodukten mit beschränkten Mengen hochkonzentrierter Schwefelsäure amorphe Sulfate und daraus durch Wasserzersetzung unter Pseudomorphose amorphe Farbstoffe erhalten kann.Process for the preparation of colloidal N-dihydro-1, 2, 21, 11-anthraquinonazine or its substitute products. In patents 31372q. and was 31q.209 i.a. has been described that by treating N-dihydro-1, 2, 21, 1'-anthraquinonazine or its substitution products with limited amounts of highly concentrated sulfuric acid amorphous sulphates and from them amorphous dyes due to water decomposition under pseudomorphism can get.

In weiterer Ausbildung dieser Verfahren wurde nun gefunden, daß man in besonders günstiger Weise kolloide Farbstoffe erhält, wenn man N-Dihydro-i, 2, 21, 1'-anthrachinonazine mit einer Schwefelsäure behandelt, die gerade noch hochprozentig genug ist, um gelbgrünes Sulfat zu liefern, z. B. einer solchen vom spez. Gewicht 1,77 (d. h. 62,8° B6), und zwar insbesondere bei Gegenwart von kolloidogenen Stoffen, wie Benzylsulfanilsäure und ähnlichen aromatischen und sonstigen Solfosäuren oder anderen organischen Stoffen, wie sie u. a. bereits in der Patentschrift 3142o9 als günstige Zusatzmittel für die Abscheidung des Indanthrens in feinverteilter Form erwähnt sind; so z. B. wirken günstig: Terpensulfosäuren, Ligninsulfosäure, aromatische Carbonsäuren, Phenol.e, Aldehyde, Formaldehyd-Kondensationsprodukte organischer Körper, Albumine, Albumosen, Kohleydrate usw. Beispiel. In 8oo Teilen Schwefelsäure vom spei. Gewicht 1,77, d. h. 62,8° Be, werden i5 Teile benzylsulfanilsaures Natron gelöst. Bei 15° oder darunter werden unter gütem Rühren und gegebenenfalls unter Kühlen 5o Teile N-Dihydro-1, 2, 21, 1l--anthrachinonazinpulver eingetragen. Die anfangs dünnflüssige Masse nimmt langsam dicke, breiige Konsistenz an. Das Reaktionsmagma wird, ohne daß man zu lange rührt, d. h. ohne daß man den Übergang in grob kristallisiertes Sulfat eintreten läßt, mit Eiswasser zersetzt und der Farbstoff filtriert. Anfangs, solange ein starker Überschuß von Säure vorhanden ist, läßt sich die Forbstoffpaste ziemlich gut filtrieren. Die letzten Reste von Säure und noch vorhandene Teile von Benzylsulfanilsäure können durch Dialysieren entfernt werden. Der isolierte Farbstoff ist als wäßrige Paste sehr dünnflüssig; eine loprozentige Paste ist eine dünne blaue Lösung, und selbst eine 4oprozentige Paste besitzt noch ziemlich dünnflüssige Konsistenz. Unter dem Mikroskop gesehen, erscheint der Farbstoff als aus äußerst kleinen Teilchen bestehend, welche die Größe von Tuberkelbazillen oder darunter besitzen.In a further development of this process it has now been found that one colloidal dyes are obtained in a particularly favorable manner if N-dihydro-i, 2, 21, 1'-anthraquinonazine treated with a sulfuric acid that is just high percentage is enough to provide yellow-green sulfate, e.g. B. such from the spec. weight 1.77 (i.e. 62.8 ° B6), especially in the presence of colloidogenic substances, such as benzylsulfanilic acid and similar aromatic and other solfonic acids or other organic substances, such as already in the patent specification 3142o9 as inexpensive additives for the separation of indanthrene in finely divided form are mentioned; so z. B. have a beneficial effect: terpene sulfonic acids, lignin sulfonic acid, aromatic Carboxylic acids, phenols, aldehydes, formaldehyde condensation products of organic Bodies, albumins, albumoses, carbohydrates, etc. Example. In 800 parts of sulfuric acid from the spei. Weight 1.77, d. H. 62.8 ° Be, i5 parts of benzylsulfanil acid sodium solved. At 15 ° or below, with vigorous stirring and, if necessary, under Cooling 5o parts of N-dihydro-1, 2, 21, 1l - entered anthraquinone azine powder. the The initially thin mass slowly takes on a thick, mushy consistency. The reaction magma without stirring too long, d. H. without the transition to coarsely crystallized Lets sulfate enter, decomposed with ice water and filtered the dye. At first, As long as there is a large excess of acid, the molding paste can be used filter pretty well. The last remains of acid and parts of Benzylsulfanilic acid can be removed by dialysis. The isolated dye As an aqueous paste, it is very fluid; a 100 percent paste is a thin blue one Solution, and even a 4% paste has a fairly thin consistency. When viewed under the microscope, the dye appears than from extremely consisting of tiny particles the size of or less than tubercle bacilli own.

Claims (1)

PATENT-ANsPRUcii: Abänderung des Verfahrens des Patents 313724, darin bestehend, daß man zwecks Herstellung von kolloiden N-Dihydro-i, 2, 21, il-anthrachinonazin und dessen Substitutionsprodukten die Farbstoffe durch eine Schwefelsäure solcher Konzentration, welche noch gerade hochprozentig genug ist, um Sulfatbildung hervorzurufen, zweckmäßig bei Gegenwart von kolloidogenen organischen Stoffen in kolloides N-Dihydro-i, 2, 21, ilanthrachinonazinsulfat überführt und daraus durch Wasserzersetzung unter Pseudomorphose kolloiden Farbstoff erzeugt.PATENT CLAIMS: Modification of the procedure of patent 313724, therein consisting that for the purpose of producing colloidal N-dihydro-i, 2, 21, il-anthraquinonazine and its substitution products the dyes by a sulfuric acid such Concentration that is just high enough to cause sulphate formation, expedient in the presence of colloidogenic organic substances in colloidal N-dihydro-i, 2, 21, ilanthraquinone azine sulfate and transferred from it by water decomposition under Generates pseudomorphic colloidal dye.
DEF38614D 1914-04-07 1914-04-07 Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products Expired DE355737C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF38614D DE355737C (en) 1914-04-07 1914-04-07 Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF38614D DE355737C (en) 1914-04-07 1914-04-07 Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products

Publications (1)

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DE355737C true DE355737C (en) 1922-07-01

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DEF38614D Expired DE355737C (en) 1914-04-07 1914-04-07 Process for the preparation of colloidal N-dihydro-1,2,2,1-anthraquinone azine or its substitution products

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