CH235442A - Process for the preparation of a monoaryl substitution product of melamine. - Google Patents

Process for the preparation of a monoaryl substitution product of melamine.

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Publication number
CH235442A
CH235442A CH235442DA CH235442A CH 235442 A CH235442 A CH 235442A CH 235442D A CH235442D A CH 235442DA CH 235442 A CH235442 A CH 235442A
Authority
CH
Switzerland
Prior art keywords
monoaryl
melamine
substitution product
preparation
production
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH235442A publication Critical patent/CH235442A/en

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Description

  

  Verfahren zur Herstellung eines     hionoarylsubstitutionsproduktes    des Vielamins.    Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Monoaryl-          substitutionsproduktes    des     Melamins,    da  durch     gekennzeichnet,    dass man ein mineral  saures Salz von     p-Aminophenol    auf einen       Thioammelinäther    in Gegenwart eines     Ver-          dünnungsmittels        einwirken    lässt.  



  Das so erhaltene     Mono-4'-oxyphenylmel-          amin    ist     ein    neuer Körper vom Schmelzpunkt  277 bis 278 . Es soll als     Zwischenprodukt    zur       Herstellung    von harzartigen Kondensations  produkten Verwendung finden.    <I>Beispiel:</I>    545 kg     p-Aminophenol    und 49 kg.

   Salz  säure     (sspez.        Gew.    =     1',19!)    werden in etwa  250'0 Liter heissem     Wasser    gelöst     und    mit  855 kg     Thioammelin-äthyläther    so lange ge  kocht, bis kein unverändertes     p-Aminophenol     mehr nachweisbar ist. Die Lösung, welche  das Chlorhydrat des Umsetzungsproduktes  enthält,     wird    heiss von     geringen    Abscheidun-    gen     abfiltriert.    Nach dem Erkalten wird die  Base durch Zusatz von 58 kg Natronlauge  40      Be    als farblose Kristallmasse abgeschie  den, mit Wasser neutral gewaschen und ge  trocknet.

   Das so erhaltene     Mono-4'-oxyphe-          nylmelamin    kann durch     Umkristallisieren     aus Wasser noch weiter gereinigt werden.



  Process for the preparation of a hionoaryl substitution product of polyamine. The present patent relates to a process for the production of a monoaryl substitution product of melamine, characterized in that a mineral acid salt of p-aminophenol is allowed to act on a thioammelin ether in the presence of a diluent.



  The mono-4'-oxyphenylmelamine thus obtained is a new body with a melting point of 277 to 278. It should be used as an intermediate for the production of resinous condensation products. <I> Example: </I> 545 kg p-aminophenol and 49 kg.

   Hydrochloric acid (specific weight = 1 ', 19!) Are dissolved in about 250'0 liters of hot water and boiled with 855 kg of thioammelin ethyl ether until no unchanged p-aminophenol can be detected. The solution, which contains the chlorohydrate of the reaction product, is filtered off hot from small deposits. After cooling, the base is deposited as a colorless crystal mass by adding 58 kg of 40 Be sodium hydroxide solution, washed neutral with water and dried.

   The mono-4'-oxyphenylmelamine obtained in this way can be purified even further by recrystallization from water.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Mono- arylsubstitutionsproduktes des Melamins, da durch gekennzeichnet, dass man ein mineral saures Salz von p-Aminophenol auf einen. Thioammelinäther in Gegenwart eines Ver- dünungsmittels einwirken lässt. Das so erhaltene Mono-4'-oxyphenylmel- amin ist ein neuer Körper vom Schmelzpunkt 277 bis 278 . PATENT CLAIM: Process for the production of a monoaryl substitution product of melamine, characterized in that a mineral acid salt of p-aminophenol is added to a. Lets thioammelin ether act in the presence of a thinner. The mono-4'-oxyphenylmelamine thus obtained is a new body with a melting point of 277 to 278. Es soll als Zwischenprodukt zur Herstellung von harzartigen KonUensations- produkten Verwendung finden. It is intended to be used as an intermediate product for the production of resinous confluence products.
CH235442D 1942-01-30 1943-01-18 Process for the preparation of a monoaryl substitution product of melamine. CH235442A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE235442X 1942-01-30
CH232886T 1943-01-18

Publications (1)

Publication Number Publication Date
CH235442A true CH235442A (en) 1944-11-30

Family

ID=25727764

Family Applications (1)

Application Number Title Priority Date Filing Date
CH235442D CH235442A (en) 1942-01-30 1943-01-18 Process for the preparation of a monoaryl substitution product of melamine.

Country Status (1)

Country Link
CH (1) CH235442A (en)

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