DE163041C - - Google Patents

Info

Publication number
DE163041C
DE163041C DE1904163041D DE163041DA DE163041C DE 163041 C DE163041 C DE 163041C DE 1904163041 D DE1904163041 D DE 1904163041D DE 163041D A DE163041D A DE 163041DA DE 163041 C DE163041 C DE 163041C
Authority
DE
Germany
Prior art keywords
trioxyanthraquinone
acid
dioxyanthraquinone
class
nitrous acid
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
DE1904163041D
Other languages
German (de)
Filing date
Publication of DE163041C publication Critical patent/DE163041C/de
Application filed filed Critical
Priority to AT24856D priority Critical patent/AT24856B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/02Hydroxy-anthraquinones; Ethers or esters thereof
    • C09B1/06Preparation from starting materials already containing the anthracene nucleus
    • C09B1/08Dyes containing only OH-groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Jig 163041 KLASSE Mq. Jig 163041 CLASS Mq. Durch die Patentschrift 81245 der Kl. 22 ist es bekannt, daß man das Anthrachinon durch salpetrige Säure zu 1 · 4-Dioxyanthrachinon oxydieren kann. Es war hiernach zu erwarten, daß das 1 · 8 - Dioxyanthrachinon, welches in beiden Seitenkernen je eine Hydroxylgruppe in α-Stellung besitzt und dadurch dem Angriffe von Oxydationsmitteln auf beiden Seiten in gleicher Weise zugänglieh gemacht ist, in der Hauptsache durch gleichzeitigen Eintritt von je einer Hydroxylgruppe in Parastellung zu den vorhandenen Hydroxylgruppen, das 1 · 4 · 5 · 8-Tetraoxyanthrachinon liefern würde.From the patent specification 81245 of class 22 it is known that the anthraquinone can oxidize by nitrous acid to 1 · 4-dioxyanthraquinone. It was closed afterwards expect that the 1 · 8 - dioxyanthraquinone, which has one in each of the two side nuclei Has a hydroxyl group in the α-position and is therefore resistant to attack by oxidizing agents is made accessible in the same way on both sides, mainly through simultaneous entry of one hydroxyl group each in para position to the existing ones Hydroxyl groups, the 1 x 4 x 5 x 8-tetraoxyanthraquinone would deliver. Dies ist jedoch nicht der Fall; die Oxydation findet vielmehr zunächst, auch bei An- ; wendung hoher Temperaturen, nur in dem einen Kern statt, und man gelangt so in sehr glatter Weise zu dem technisch wichtigen ι · 4 · 8-Trioxyanthrachinon.However, this is not the case; rather, the oxidation takes place first of all, even in the case of an ; use of high temperatures, only in one core, and one arrives at the technically important ι · 4 · 8-trioxyanthraquinone in a very smooth manner. Beispiel.Example. In 600 kg Schwefelsäure von 66° Be. werden unter Rühren 8'/2 kg Natriumnitrit gelöst, hierauf 25 kg kristallisierte Borsäure und dann 30 kg Chrysazin zugegeben.In 600 kg of sulfuric acid of 66 ° Be. 8 1/2 kg of sodium nitrite are dissolved with stirring, then 25 kg of crystallized boric acid and then 30 kg of chrysazine are added. Man erhitzt nun auf 170 bis i8o°, wobei die Bildung des I · 4 · 8-Trioxyanthrachinons, welche spektroskopisch leicht verfolgt werden kann, alsbald beginnt. Wenn die spektroskopische Prüfung keine weitere Zunahme an gebildetem Trioxyanthrachinon mehr erkennen läßt, läßt man erkalten, verdünnt die Schmelze mit Wasser und filtriert das abgeschiedene ι · 4 · 8-Trioxyanthrachinon (vergl. die Patentschrift 161026 der Kl. 12 q) ab.It is now heated to 170 to 180 °, whereby the formation of the I · 4 · 8-trioxyanthraquinone, which can easily be followed spectroscopically can begin soon. If the spectroscopic examination does not detect any further increase in the trioxyanthraquinone formed left, allowed to cool, diluted the melt with water and filtered the deposited ι · 4 · 8-trioxyanthraquinone (cf. the patent 161026 of class 12 q). Statt Natriumnitrit können in obigem Beispiel auch andere salpetrigsaure Salze oder Nitrosylschwefelsäure oder ähnliche Substanzen verwendet werden.Instead of sodium nitrite, other nitrous acid salts can also be used in the above example or nitrosylsulfuric acid or similar substances can be used. Pate ν τ-An Spruch:Godfather ν τ-An saying: Verfahren zur Darstellung von 1 · 4 · 8-Trioxyanthrachinon, darin bestehend, daß man 1 · 8-Dioxyanthrachinon (Chrysazin) mit salpetriger Säure oder deren Verbindungen, zweckmäßig" bei Gegenwart von Borsäure, oxydiert.Process for the preparation of 1 · 4 · 8-trioxyanthraquinone, consisting in that 1 · 8-Dioxyanthraquinone (chrysazine) oxidized with nitrous acid or its compounds, expediently "in the presence of boric acid.
DE1904163041D 1904-03-02 1904-03-02 Expired - Lifetime DE163041C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT24856D AT24856B (en) 1904-03-02 1905-07-17 Process for the preparation of 1-4-8-trioxyanthraquinone.

Publications (1)

Publication Number Publication Date
DE163041C true DE163041C (en)

Family

ID=428771

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1904163041D Expired - Lifetime DE163041C (en) 1904-03-02 1904-03-02

Country Status (1)

Country Link
DE (1) DE163041C (en)

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