DE71157C - Process for the preparation of aiss3-naphthylenediamine-a * -sulfonic acid from a <^ 3-amidonaphthol-az-sulfonic acid - Google Patents

Process for the preparation of aiss3-naphthylenediamine-a * -sulfonic acid from a <^ 3-amidonaphthol-az-sulfonic acid

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Publication number
DE71157C
DE71157C DENDAT71157D DE71157DA DE71157C DE 71157 C DE71157 C DE 71157C DE NDAT71157 D DENDAT71157 D DE NDAT71157D DE 71157D A DE71157D A DE 71157DA DE 71157 C DE71157 C DE 71157C
Authority
DE
Germany
Prior art keywords
sulfonic acid
acid
naphthylenediamine
preparation
aiss3
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 - Lifetime
Application number
DENDAT71157D
Other languages
German (de)
Original Assignee
DAHL & COMP, in Barmen
Publication of DE71157C publication Critical patent/DE71157C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01Sulfonic acids
    • C07C309/28Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C07C309/47Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

a2-sulfosäure.a 2 sulfonic acid.

Wird die a - Naphtylamin - a2 ß8 - disulfosäure (II. der Patentschrift Nr. 41957) mit Aetznatron verschmolzen, so entsteht als erstes Einwirkungsproduct die aj-Amido-ßg-Naphtol-^-monosulfosäure. Diese Säure ist in Wasser sehr schwer löslich. Ihre Salze sind leicht löslich und krystallisiren leicht. Die Fluorescenz ihrer Lösungen ist blauviolett. Durch Einwirkung von Ammoniak bei höherer Temperatur unter Druck entsteht leicht und quantitativ eine bis jetzt nicht bekannte Diamidonaphtalinsulfosäure.If the a - naphthylamine - a 2 ß 8 - disulfonic acid (II. Of patent specification No. 41957) is fused with caustic soda, the first product of action is the aj-amido-βg-naphthol - ^ - monosulfonic acid. This acid is very sparingly soluble in water. Their salts are easily soluble and readily crystallize. The fluorescence of their solutions is blue-violet. A previously unknown diamidonaphthalene sulfonic acid is easily and quantitatively formed by the action of ammonia at a higher temperature under pressure.

Zur Darstellung derselben verfährt man wie folgt:To display the same, proceed as follows:

100 kg a,-Amido-ßg-Naphtol-a2-monosulfosäure werden in einem Druckkessel mit 80 kg wässerigem Ammoniak vom spec. Gew. 0,910 bei einer Temperatur von 170 bis i8o° während 12 bis 15 Stunden erhitzt.100 kg of a, -amido-ß g -naphtol-a 2 -monosulfonic acid are in a pressure vessel with 80 kg of aqueous ammonia from the spec. Weight 0.910 heated at a temperature of 170 to 180 ° for 12 to 15 hours.

Nach dem Erkalten des Kessels ist der Inhalt desselben zu einer blätterig krystallinischen Masse erstarrt, bestehend aus dem Ammoniaksalz der neu entstandenen Naphtylendiaminsulfosäure. Die Säure kann sofort, ohne weitere Reinigung, zur Darstellung von Farbstoffen benutzt werden..After the kettle has cooled down, the contents of the kettle have become crystalline in the form of sheets The mass solidifies, consisting of the ammonia salt of the newly formed naphthylenediamine sulfonic acid. The acid can immediately, without further purification, to form dyes to be used..

Die freie Naphtylendiaminsulfosäure (at ß3 a2) ist in kaltem Wasser sehr schwer, in heifsem Wasser leichter löslich und bildet ein weifses Pulver. Aus heifs gesättigten wässerigen Lösungen scheidet sie sich in kleinen Nädelchen ab.The free naphthylenediamine sulfonic acid (a t ß 3 a 2 ) is very difficult in cold water, more easily soluble in hot water and forms a white powder. It is deposited in small needles from hot, saturated aqueous solutions.

Die Ammoniak-, Natron- und Kalksalze der Säure krystallisiren aus Wasser leicht in grofsen Tafeln und sind darin ziemlich schwer löslich.The ammonia, soda, and lime salts of acid easily crystallize from water to a large extent Tablets and are rather difficult to dissolve in them.

Die Naphtylendiaminsulfosäure nimmt beim Diazotiren 2 Mol. salpetrige Säure auf. Nach kurzem Stehen der Tetrazoverbindung beginnt jedoch schon bei o° eine lebhafte Gasentwickelung, indem eine Diazogruppe durch Hydroxyl ersetzt wird. Dementsprechend verbindet sich die Tetrazoverbindung auch nur mit 1 Mol. eines Naphtols, während die andere Diazogruppe durch Hydroxyl ersetzt wird. Die Tetrazoverbindung der Naphtylendiaminsulfosäure ist leicht löslich, dagegen scheidet sich die durch Ersatz einer Diazogruppe durch O H entstehende Diazonaphtolsulfosäure als Niederschlag ab. Die Naphtylendiaminsulfosäure verbindet sich sowohl in essigsaurer wie in alkalischer Lösung leicht mit Diazo- und Tetrazokörpern zu neuen Farbstoffen, von denen einige ein hervorragendes technisches Interesse bieten.The naphthylenediamine sulfonic acid takes up 2 moles of nitrous acid when diazotizing. After the tetrazo compound has stood still for a short time, however, vigorous evolution of gas begins at 0 °, as a diazo group is replaced by hydroxyl. Accordingly, the tetrazo compound only combines with 1 mole of a naphthol, while the other diazo group is replaced by hydroxyl. The tetrazo compound of naphthylenediaminesulphonic acid is easily soluble, whereas the diazonaphtholsulphonic acid formed by replacing a diazo group with OH separates out as a precipitate. Naphthylenediaminesulfonic acid combines easily with diazo and tetrazo bodies in both acetic and alkaline solutions to form new dyes, some of which are of outstanding technical interest.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung der α, ß3 - Naphtylendiamin-a2-sulfosäure, darin bestehend, dafs man die durch Verschmelzen der α - Naphtylamindisulfosäure II. des Patentes Nr. 41957 mit Aetznatron erhaltene H1 ß3-Amidonaphtolct2-monosulfosäure mit wässerigem Ammoniak auf 170 bis i8o° erhitzt.Process for the preparation of the α, β 3 -naphthylenediamine-a 2 -sulphonic acid, consisting in that the H 1 β 3 -amidonaphtholct 2 -monosulphonic acid obtained by fusing the α-naphthylamine disulphonic acid II of Patent No. 41957 with caustic soda is mixed with aqueous ammonia heated to 170 to 180 °.
DENDAT71157D Process for the preparation of aiss3-naphthylenediamine-a * -sulfonic acid from a <^ 3-amidonaphthol-az-sulfonic acid Expired - Lifetime DE71157C (en)

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DE71157C true DE71157C (en)

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DE (1) DE71157C (en)

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