DE934650C - Process for the production of tetraethylene pentamine - Google Patents
Process for the production of tetraethylene pentamineInfo
- 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
- Authority
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/84—Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
- C07C209/06—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms
- C07C209/08—Preparation 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/68—Preparation 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/86—Separation
Landscapes
- 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:
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)
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) |
-
1953
- 1953-06-23 DE DEM19045A patent/DE934650C/en not_active Expired
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