DE443284C - Durable diazotization preparations - Google Patents

Durable diazotization preparations

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Publication number
DE443284C
DE443284C DEC36828D DEC0036828D DE443284C DE 443284 C DE443284 C DE 443284C DE C36828 D DEC36828 D DE C36828D DE C0036828 D DEC0036828 D DE C0036828D DE 443284 C DE443284 C DE 443284C
Authority
DE
Germany
Prior art keywords
diazotization
preparations
durable
acid
nitrites
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
DEC36828D
Other languages
German (de)
Inventor
Dr Karl Schnitzspahn
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.)
IG Farbenindustrie AG
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
Priority to DEC36828D priority Critical patent/DE443284C/en
Application granted granted Critical
Publication of DE443284C publication Critical patent/DE443284C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing 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
    • C09B67/0071Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0079Azoic dyestuff preparations

Landscapes

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

Description

Haltbare Diazotierungspräparate. Zusatz zum Patent 426 033. In dem Patent 426 033 und in dem Zusatzpatent 442 076 sind Diazotierungspräparate aus aromatischen diazotierbaren Nitroaminoverbindungen, welche keine Sulfo- oder Carboxvlgruppe enthalten, beschrieben, welche die zur Gewinnung von Diazosalzlösungen nötigen Reagentien : Nitroaminoverbindung, Mineralsäure und ein salpetrigsaures Salz nebeneinander enthalten und die beim Lösen in Wasser oder verdünnter Säure gebrauchsfertige Diazolösungen liefern.Durable diazotization preparations. Addition to patent 426 033. Patent 426 033 and additional patent 442 076 describe diazotization preparations made from aromatic diazotizable nitroamino compounds which contain no sulfo- or carboxyl group and which contain the reagents necessary to obtain diazo salt solutions: nitroamino compound, mineral acid and a nitrous acid salt contain side by side and which, when dissolved in water or dilute acid, provide ready-to-use diazo solutions.

Im Verfolg dieser Untersuchungen wurde gefunden, daß man zur Gewinnung solcher haltbaren Diazotierungspräparate aus Nitroaminokörpern auch in der Weise vorgehen kann, daß man die freien Nitroaminobasen mit trocknen Bisulfaten oder anderen trocknen, festen sauren Substanzen, die aus Nitriten salpetrige Säure in Freiheit zu setzen vermögen, und mit Nitriten vermischt. Zweckmäßig setzt man auch solchen Mischungen ein geeignetes Verdünnungs- und Schutzmittel für <las Nitrit, wie z, B. Arylsulfonate, Aluminiumsulfat, entwässertes '.#lagrresiumchlorid usw., zu. In dein -trocknen, Nitrobase, saure Substanz und Nitrit nebeneinander enthaltenden Gemisch tritt zwischen Nitroaminobase und der festen sauren Substanz, z. B. dem Bisulfat, zunächst keine oder nur sehr geringe Umsetzung ein, und solche Präparate enthalten im wesent lichen neben salpetrigsauren Salzen die freien Nitrobasen und die zur Diazotierung nötige Säure, als z. B. saures schwefelsaures Salz, nebeneinander. Trotzdem ergeben sie, wenn sie von dem sauren Salz eine genügende Menge enthalten, beim Lösen in Wasser oder bei ungenügendem Säuregehalt beim Lösen in verdünnter Säure rasch und fast quantitativ gebrauchsfertige Diazolösungen. Dabei ist die Herstellung solcher Präparate durch bloßes Zusammenmischen trockner Substanzen, und ohne daß zuerst ein Salz der Nitroaminoverbindungen hergestellt werden muß, sehr einfach.In the course of these investigations it was found that one can obtain such durable diazotization preparations from nitroamino bodies also in the way can proceed that you dry the free nitroamino bases with bisulfates or others dry, solid acidic substances that release nitrous acid from nitrites able to set, and mixed with nitrites. It is also expedient to use such Mixtures a suitable diluent and protection agent for <las nitrite, such as e.g. aryl sulfonates, aluminum sulfate, dehydrated lagrresium chloride, etc., too. In your -dry, containing nitrobase, acidic substance and nitrite side by side Mixture occurs between nitroamino base and the solid acidic substance, e.g. B. the Bisulfate, initially no or only very little conversion, and such preparations In addition to nitrous acid salts, they essentially contain the free nitro bases and the acid necessary for diazotization, as z. B. acid sulfuric acid salt, side by side. Nevertheless, if they contain a sufficient amount of the acidic salt, when dissolving in water or in case of insufficient acidity when dissolving in dilute Acid quickly and almost quantitatively ready-to-use diazo solutions. Here is the production such preparations by simply mixing together dry substances, and without that first a salt of the nitroamino compounds has to be prepared, very simple.

Beispiel. 138 Teile feingepulvertes p-Nitroanilin, das durch Zusatz von z. B. o, z Teil isopropylnaphthalinsulfosaurem Natrium gut benetzbar gemacht sein kann, werden mit z8o Teilen teilentwässertem Aluminiumsulfat, 3oo Teilen wasserfreiem Natriumbisulfat und 72 Teilen trocknem Natriumnitrit innig vermischt. Es wird ein sehr gut beständiges, bei allmählichem Einrühren in .4 bis j Teile Wasser fast theoretische Ausbeute an Diazolösung lieferndes Präparat erhalten. Das Natriumbisulfat kann ganz oder teilweise durch geeignete andere feste saure Substanzen, wie z. B. saures chlorbenzoldisulfosaures Kalium oder freie p-Chlorbenzolsulfosäure, p-Toluolsulfosäure usw., ersetzt werden.Example. 138 parts of finely powdered p-nitroaniline, which by adding from Z. B. o, z part of sodium isopropylnaphthalenesulfonate made well wettable can be, with z8o parts partially dehydrated aluminum sulfate, 300 parts anhydrous Sodium bisulfate and 72 parts of dry sodium nitrite intimately mixed. It will be a very well stable, almost theoretical when gradually stirred into .4 to j parts of water Yield of preparation delivering diazo solution obtained. The sodium bisulfate can be whole or partially by suitable other solid acidic substances, such as. B. acid chlorobenzene disulfonic acid potassium or free p-chlorobenzenesulfonic acid, p-toluenesulfonic acid, etc. can be replaced.

Claims (1)

PATENTANSPRUCIj.: Haltbare Diazotierungspräparate nach Patent 426 033, bestehend aus als freie Basen angewandten aromatischen diazotierbaren Nitroaminoverbindungen, welche keine Sulfo- oder Carboxylgruppe enthalten, aus sauren mineralsauren Salzen oder anderen festen sauren Substanzen, die aus Nitriten salpetrige Säure in Freiheit zu setzen vermögen, und aus Nitriten.PATENT CLAIMS: Durable diazotization preparations according to Patent 426 033, consisting of aromatic diazotizable nitroamino compounds used as free bases that contain no sulfo or carboxyl groups, from acidic mineral acid salts or other solid acidic substances that are capable of releasing nitrous acid from nitrites, and from nitrites.
DEC36828D 1925-06-19 1925-06-19 Durable diazotization preparations Expired DE443284C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC36828D DE443284C (en) 1925-06-19 1925-06-19 Durable diazotization preparations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC36828D DE443284C (en) 1925-06-19 1925-06-19 Durable diazotization preparations

Publications (1)

Publication Number Publication Date
DE443284C true DE443284C (en) 1927-04-21

Family

ID=7022485

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC36828D Expired DE443284C (en) 1925-06-19 1925-06-19 Durable diazotization preparations

Country Status (1)

Country Link
DE (1) DE443284C (en)

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