DE934650C - Process for the production of tetraethylene pentamine - Google Patents

Process for the production of tetraethylene pentamine

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Publication number
DE934650C
DE934650C DEM19045A DEM0019045A DE934650C DE 934650 C DE934650 C DE 934650C DE M19045 A DEM19045 A DE M19045A DE M0019045 A DEM0019045 A DE M0019045A DE 934650 C DE934650 C DE 934650C
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DE
Germany
Prior art keywords
tetraethylene pentamine
hydrochloride
ethylenediamine
production
ethylene diamine
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
DEM19045A
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German (de)
Inventor
Gioachino Dr Boffa
Lido Dr Porri
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Montedison SpA
Original Assignee
Montedison SpA
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Filing date
Publication date
Application filed by Montedison SpA filed Critical Montedison SpA
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Publication of DE934650C publication Critical patent/DE934650C/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82Purification; Separation; Stabilisation; Use of additives
    • C07C209/84Purification
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/04Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
    • C07C209/06Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms
    • C07C209/08Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms with formation of amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/68Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82Purification; Separation; Stabilisation; Use of additives
    • C07C209/86Separation

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

Description

Verfahren zur Herstellung von Tetraäthylenpentamin Die Erfindung betrifft ein neues Verfahren zur Herstellung von Tetraäthylenpentamin, das für die Herstellung von Ionenaustauschharzen von Bedeutung ist.Process for the preparation of tetraethylene pentamine The invention relates to a new process for the production of tetraethylene pentamine necessary for the manufacture of ion exchange resins is important.

Es ist bekannt, daß Tetraäthylenpentamin gegenwärtig zusammen mit Äthylendiamin, Diäthylentriamin, Triäthylentetramin und anderen ähnlichen Verbindungen mit höherem Molekulargewicht durch Umsetzung von a - a'-Dichloräthan mit Ammoniak gewonnen wird.It is known that tetraethylene pentamine is currently used along with Ethylenediamine, diethylenetriamine, triethylenetetramine and other similar compounds with a higher molecular weight by reacting a - a'-dichloroethane with ammonia is won.

Äthylendiamin stellt das Hauptprodukt dieser Reaktion dar; die anderen Amine fallen in einer allmählich von Diäthylentriamin zu Tetraäthylenpentamin abnehmenden Menge an. Obwohl die erzielte Ausbeute an Tetraäthylenpentamin innerhalb gewisser Grenzen mit der Veränderung des Verhältnisses a - a'-Dichloräthan-Ammoniak geändert werden kann, stellt sie immer eine kleine Fraktion des Gesamtproduktes dar; man kann höchstens 8 °/o des verwendeten a - ä -Dichloräthans in Tetraäthylenpentamin umsetzen. Daher ist das obengenannte Verfahren wegen der geringen Ausbeute an Tetraäthylenpentamin wenig wirtschaftlich.Ethylenediamine is the main product of this reaction; the others Amines fall in a gradually decreasing manner from diethylenetriamine to tetraethylene pentamine Amount of. Although the achieved yield of tetraethylene pentamine within certain Limits changed with the change in the ratio a - a'-dichloroethane-ammonia it always represents a small fraction of the total product; man may not exceed 8 ° / o of the a - ä -dichloroethane used in tetraethylene pentamine realize. Therefore, the above process is because of the low yield of tetraethylene pentamine not very economical.

Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung von Tetraäthylenpentamin aus Äthylendiamin und dem Hydrochlorid des ß - ß'-Dichlordiäthylamins gemäß folgendem Schema: a HZNCHZCH,NH2 .+ CICH,CH,NHCH2CH2C1 - HCl HZNCHZCHZNHCHZCHZNHCHZCH2NHCHZCHZNH2 - 3HC1 Um eine hohe Ausbeute an Tetraäthylenpentamin zu erzielen, ist es notwendig, daß man einen sehr großen Überschuß an Äthylendiamin gegenüber der stöchiometrisch notwendigen Menge verwendet; mit einem Überschuß, welcher.-dreizehn- bis vierzehnmal so groß wie die theoretische Menge ist, erlangt man eine Ausbeute von 85 °/o, bezogen auf ß - ß'-Dichloräthylamin.The present invention relates to a process for the preparation of tetraethylene pentamine from ethylene diamine and the hydrochloride of ß - ß'-dichlorodiethylamine according to the following scheme: a HZNCHZCH, NH2. + CICH, CH, NHCH2CH2C1 - HCl HZNCHZCHZNHCHZCHZNHCHZCH2NHCHZCHZNH2 - 3HC1 In order to achieve a high yield of tetraethylene pentamine, it is necessary to use a very large excess of ethylene diamine compared to the stoichiometrically necessary amount; with an excess which is thirteen to fourteen times the theoretical amount, a yield of 85% is obtained, based on β-β'-dichloroethylamine.

Die besten Arbeitsbedingungen des Verfahrens zur Durchführung der Reaktion sind folgende: Der wäßrigen,, bei 1z8° siedenden Äthylendiaminlösung (Konzentration 7o bis 75 °/o) wird unter Rühren allmählich eine konzentrierte wäßrige Lösung von ß # ß'-Dichlordiäthylaniinhydrochlorid, während ungefähr 2 Stunden, zugesetzt, wonach die Lösung noch eine weitere Stunde gekocht wird. Die Reaktionsflüssigkeit wird dann destilliert, um das überschüssige Äthylendiamin zurückzugewinnen; der das Hydrochlorid des Tetraäthylenpentamins enthaltende Rest wird mit Alkali (Natrium- oder Calciumhydroxyd) .behandelt und schließlich im Vakuum destilliert- nach einem geringen Vorlauf von Äthylendiamin destilliert das Tetraäthylenpentamin unter einem Druck von 13 bis 1q. mm bei 186 bis 1g2° über.The best working conditions of the procedure to carry out the The reaction is as follows: The aqueous ethylene diamine solution boiling at 18 ° (concentration 7o to 75%) gradually becomes a concentrated aqueous solution of with stirring ß # ß'-dichlorodiethylaniine hydrochloride added over about 2 hours, after which the solution is boiled for another hour. The reaction liquid becomes then distilled to recover the excess ethylenediamine; of the hydrochloride the residue containing tetraethylene pentamine is treated with alkali (sodium or calcium hydroxide) .treated and finally distilled in vacuo - after a small advance of Ethylenediamine distills the tetraethylene pentamine under a pressure of 13 to 1q. mm at 186 to 1g2 ° across.

Das Äthylendiamin wird vorzugsweise in handelsüblicher 7o- bis 75 °/oiger wäßriger Lösung verwendet; es kann aber auch in wasserfreier Form oder gelöst in anderen Lösungsmitteln, wie Äthanol, Propanol usw., angewandt werden. Es kann auch das Hydrochlorid des ß - ß'-Dichlordiäthylanüns dem Äthylendiamin in alkoholischer Lösung oder auch in festem Zustand in kleinen Portionen zugesetzt werden.The ethylenediamine is preferably in the commercially available 7o to 75 % Aqueous solution used; but it can also be in anhydrous form or dissolved can be used in other solvents such as ethanol, propanol, etc. It can also the hydrochloride of ß - ß'-Dichlordiäthylanüns the ethylenediamine in alcoholic Solution or in the solid state can be added in small portions.

Beispiel 27 Mol Äthylendiamin werden in 7o %iger wäßriger Lösung in einem mit einem Rückflußkühler versehenen Kolben zum Sieden erhitzt. Aus einem mit Hahn versehenen Trichter läßt man während il/, bis 2 Stunden eine Lösung von z Mol Hydrochlorid des ß - ß'-Dichlordiäthylamins in go ccm Wasser eintropfen. Man läßt dann eine weitere Stunde sieden und destilliert hierauf aus der Reaktionsflüssigkeit den größten Teil des im Überschuß verwendeten Äthylendiamins ab. Dem Rest werden 3 Mol in Methanol gelöstes Natriumhydroxyd zugesetzt, dann läßt man ungefähr 1/2 Stunde unter Rückfluß sieden, kühlt ab und filtriert das feste abgeschiedene Hydrochlorid ab. Das Methanol wird durch Destillation bei gewöhnlichem Druck wiedergewonnen und der Rest unter Vakuum destilliert.Example 27 moles of ethylenediamine are in 7o% aqueous solution in heated to boiling in a flask equipped with a reflux condenser. From one with A funnel provided with a stopcock is allowed to a solution of z moles for up to 2 hours Drip the hydrochloride of ß - ß'-dichlorodiethylamine into 3 cc of water. One lets then boil for a further hour and then distill from the reaction liquid most of the ethylene diamine used in excess. The rest will be 3 moles of sodium hydroxide dissolved in methanol are added, then about 1/2 Boil under reflux for an hour, cool and filter the solid hydrochloride which has separated out away. The methanol is recovered by distillation at ordinary pressure and the remainder is distilled under vacuum.

Nach Entfernung des Äthylendiamins und einiger Vorlaufprodukte destillieren unter 16 mm Druck bei 197 bis 2o5° etwa 16o g Tetraäthylenpentamin über.After removing the ethylene diamine and some precursors, distill under 16 mm pressure at 197 to 2o5 ° about 16o g of tetraethylene pentamine over.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Tetraäthylenpentamin, dadurch gekennzeichnet, daß man vorzugsweise im Überschuß vorhandenes Äthylendiamin mit einem Hydrohalogenid, vorzugsweise dem Hydrochlorid des ß - ß'-Dichlordiäthylan-lins, bei erhöhter Temperatur, vorzugsweise bei Siedehitze umsetzt, nach Abdestillieren des gegebenenfalls noch vorhandenen Äthylendiamins den Rückstand mit Alkalihydroxyd behandelt und nach Abkühlen das abgeschiedene Hydrochlorid des Tetraäthylenpentamins abtrennt. PATENT CLAIM: Process for the preparation of tetraethylene pentamine, characterized in that ethylene diamine which is preferably present in excess is reacted with a hydrohalide, preferably the hydrochloride of ß - ß'-dichlorodiethylanine, at an elevated temperature, preferably at boiling point, after distilling off any still present Ethylenediamine treated the residue with alkali metal hydroxide and, after cooling, the separated hydrochloride of tetraethylene pentamine separated off.
DEM19045A 1952-07-17 1953-06-23 Process for the production of tetraethylene pentamine Expired DE934650C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT934650X 1952-07-17

Publications (1)

Publication Number Publication Date
DE934650C true DE934650C (en) 1955-11-03

Family

ID=11331993

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM19045A Expired DE934650C (en) 1952-07-17 1953-06-23 Process for the production of tetraethylene pentamine

Country Status (1)

Country Link
DE (1) DE934650C (en)

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