AT142426B - Process for the preparation of resinous condensation products from aromatic amines and aldehydes. - Google Patents

Process for the preparation of resinous condensation products from aromatic amines and aldehydes.

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Publication number
AT142426B
AT142426B AT142426DA AT142426B AT 142426 B AT142426 B AT 142426B AT 142426D A AT142426D A AT 142426DA AT 142426 B AT142426 B AT 142426B
Authority
AT
Austria
Prior art keywords
condensation products
aldehydes
aromatic amines
preparation
resinous condensation
Prior art date
Application number
Other languages
German (de)
Inventor
Hermann Burmeister
Original Assignee
Aeg
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 Aeg filed Critical Aeg
Application granted granted Critical
Publication of AT142426B publication Critical patent/AT142426B/en

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  • Phenolic Resins Or Amino Resins (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Description

  

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  Verfahren zur Herstellung von harzartigen   KondensationsproduMen   aus aromatischen Aminen und Aldehyden. 



   Die guten Eigenschaften der Anilin-Kondensationsprodukte, besonders in der mechanischen und elektrischen Festigkeit, machen dieses Material als Baustoff für die Herstellung von Isolationsmaterial wertvoll. Die Verwendungsmöglichkeit auch für formbare und pressbare Gegenstände sowie für die Herstellung von Hartgewebe und   Hartpapier   hat zur Voraussetzung, dass erstens das Material in einer löslichen und härtbaren Stufe zu gewinnen ist und zweitens der   Härtungsprozess   in einer solchen Weise 
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 und unschmelzbares Produkt   übergeführt   werden kann, gelingt. 



   Die Erfindung besteht in einem Verfahren zur Herstellung von Kondensationsprodukten aus Aldehyden und aromatischen Aminen in Gegenwart von Säure, u. zw. wird die Kondensation von 1 Mol 
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 organischen Säure, berechnet auf Amin mit oder ohne Zusatz einer   Kontaktsubstanz bis   zur Bildung schmelzbarer oder löslicher   Kondensationsprodukte durchfiihrt und   diese werden   nachträglich   durch eine Wärmebehandlung   gehaltert.   



     D.   e Herstellung von Anilin-Formaldehyd-Kondensationsprodukten in Gegenwart von Säure ist bekannt. Zum Teil werden dabei Harze erhalten, die nicht härtbar sind, nach anderen Verfahren werden gallertartige Produkte gebildet, die fast die Gesamtmengen der verwendeten Säure, sei es Mineralsäure oder Essigsäure,   einschliessen,   so dass eine   nachträgliche     Entsäuerung und   Entwässerung notwendig ist. Auch   erhält   man auf diese Weise keine schmelzbaren Zwischenstufen, welche löslich sind und als   Tränkmittel   gebraucht werden können.

   Nach einem weiteren Verfahren kann man Anhydroformaldehydanilin durch Erhitzen unter Druck in   ein unlösliches   und unschmelzbares Harz umwandeln und   schliesslich   ist auch bekannt, flüssige Kondensationsprodukte als Vulkanisationsbeschleuniger herzustellen. 



   Bei dem vorliegenden Verfahren ist es durch die Verwendung verschiedener Konzentrationsstufen der Säure und durch rechtzeitiges   Unterbrechen   des   Verfahrens auch möglich, Harze   von ver- 
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 für die Herstellung von Lacken als auch als Imprägnierungsflüssigkeit für Gewebe und Papier benutzt werden können. Benutzt man z. B. eine schnellpressende bzw. schnellhärtende   Harzstufe   zur Herstellung einer Schnellpressmasse, so ergibt diese unter der Presse in der erwärmten Matrize bei einer sehr kurzen Pressdauer ein   Formstück, das   in den mechanischen Eigenschaften den Presslingen aus Phenol-Formaldehyd-Kondensaten gleichkommt, in den elektrischen Eigenschaften, wie   Verlustwinkel,   Dielektrizitäts- 
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  Process for the production of resinous condensation products from aromatic amines and aldehydes.



   The good properties of the aniline condensation products, especially in terms of mechanical and electrical strength, make this material valuable as a building material for the manufacture of insulation material. The possibility of using it for moldable and pressable objects as well as for the production of hard tissue and hard paper is based on the prerequisite that firstly the material can be obtained in a soluble and hardenable stage and secondly the hardening process in such a way
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 and infusible product can be transferred, succeeds.



   The invention consists in a process for the preparation of condensation products of aldehydes and aromatic amines in the presence of acid, u. between. The condensation of 1 mol
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 organic acid, calculated on the amine, with or without the addition of a contact substance, up to the formation of meltable or soluble condensation products, and these are subsequently retained by a heat treatment.



     The production of aniline-formaldehyde condensation products in the presence of acid is known. In some cases, resins are obtained that are not curable, while other processes produce gelatinous products that include almost all of the acid used, be it mineral acid or acetic acid, so that subsequent deacidification and dehydration is necessary. In this way, there are also no fusible intermediate stages that are soluble and can be used as impregnating agents.

   According to a further process, anhydroformaldehyde aniline can be converted into an insoluble and infusible resin by heating under pressure and, finally, it is also known to produce liquid condensation products as vulcanization accelerators.



   In the present process it is also possible, by using different concentration levels of the acid and by interrupting the process in time, to remove resins from different
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 can be used for the production of lacquers and as an impregnation liquid for fabric and paper. If you use z. B. a fast-pressing or fast-curing resin stage for the production of a fast molding compound, this results in a molding under the press in the heated die with a very short pressing time, the mechanical properties of the pellets from phenol-formaldehyde condensates equal, in the electrical properties such as loss angle, dielectric
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AT142426D 1930-06-06 1931-05-26 Process for the preparation of resinous condensation products from aromatic amines and aldehydes. AT142426B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE142426X 1930-06-06

Publications (1)

Publication Number Publication Date
AT142426B true AT142426B (en) 1935-07-25

Family

ID=5669191

Family Applications (1)

Application Number Title Priority Date Filing Date
AT142426D AT142426B (en) 1930-06-06 1931-05-26 Process for the preparation of resinous condensation products from aromatic amines and aldehydes.

Country Status (1)

Country Link
AT (1) AT142426B (en)

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