DE859020C - Method of making ammeline - Google Patents

Method of making ammeline

Info

Publication number
DE859020C
DE859020C DEB14808A DEB0014808A DE859020C DE 859020 C DE859020 C DE 859020C DE B14808 A DEB14808 A DE B14808A DE B0014808 A DEB0014808 A DE B0014808A DE 859020 C DE859020 C DE 859020C
Authority
DE
Germany
Prior art keywords
ammeline
mole
making
biuret
dicyandiamide
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
DEB14808A
Other languages
German (de)
Inventor
Wilhelm Dr Geisel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB14808A priority Critical patent/DE859020C/en
Application granted granted Critical
Publication of DE859020C publication Critical patent/DE859020C/en
Expired legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Ammelin Das den Gegenstand .des Patents 824946 bildende Verfahren zur Herstellung von Ammelin besteht darin, daß man Dicyandiamid mit Biuret bei erhöhter Temperatur umsetzt. Nach den dortigen Angaben liefert die Umsetzung von @i Mol Dicyandiamvd mit i Mol Biuret neben i Mol Ammoniumcvanat i Mol Ammelin. Das erhaltene Gemisch muß man mehrmals mit heißem Wasser auswaschen, um das Ammelin für sich zu gewinnen.Process for the preparation of ammeline that is the subject of the patent 824946 forming method for making ammeline is that one dicyandiamide Reacts with biuret at elevated temperature. According to the information provided there, the Implementation of 1 mole of dicyandiamvd with 1 mole of biuret in addition to 1 mole of ammonium vanate i Mol Ammelin. The mixture obtained must be washed out several times with hot water, to win the ammeline for himself.

Es wurde nun gefunden, .daß bei dieser Reaktion die Bildung von Ammoniumcyanat weitgehend unterdrückt werden kann, wenn man mehr als i Mol, zweckmäßig etwa z Mol Dicyandiamid mit i Mol Biuret umsetzt. Die Umsetzung von 2 Mol Dicvandiamid mit i Yol Biuret läßt sich wie folgt darstellen: Das erhaltene Produkt braucht man nur einmal mit heißem Wasser zu waschen, um das Ammelin in sehr reiner Form und vorzüglicher Ausbeute zu gewinnen.It has now been found that, in this reaction, the formation of ammonium cyanate can be largely suppressed if more than 1 mole, expediently about z mole, of dicyandiamide is reacted with 1 mole of biuret. The reaction of 2 moles of dicvandiamide with i Yol Biuret can be represented as follows: The product obtained only needs to be washed once with hot water in order to obtain the ammeline in a very pure form and with an excellent yield.

Beispiel Ein Gemisch von v58 Teilen Dicyandiamid und 103 Teilen Biuret wird erhitzt. Bei etwa 155° wird es dünnflüssig, bei 16o° steigert sich die Temperatur rasch auf etwa a20°, @ wobei eine starke Entwicklung von Ammoniakgas auftritt und das Produkt sich wieder verfestigt. Man läßt nun erkalten, zerkleinert die Masse und wäscht sie einmal mit heißem Wasser aus. Es hinterblei.ben 2.4o Teile reines Ammelin, entsprechend 95 % der Theorie.Example A mixture of v58 parts of dicyandiamide and 103 parts of biuret is heated. At about 155 ° it becomes thin, at 160 ° the temperature rises rapidly to about a20 °, @ whereby a strong evolution of ammonia gas occurs and the product solidifies again. Allow to cool, crush the mass and wash it out once with hot water. 2.4o parts of pure ammeline remain, corresponding to 95 % of theory.

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung des Verfahrens zur Herstellung von Ammelin gemäß Patent 824 9,46, dadurch gekennzeichnet, daß man mehr als 1 Mol, zweckmäßig etwa a Mol Dicyandiamid mit i Mol Biuret bei erhöhter Temperatur umsetzt.PATENT CLAIM: Further training of the manufacturing process of Ammelin according to patent 824 9,46, characterized in that more than 1 mol, expediently about a mole of dicyandiamide is reacted with 1 mole of biuret at an elevated temperature.
DEB14808A 1951-04-29 1951-04-29 Method of making ammeline Expired DE859020C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB14808A DE859020C (en) 1951-04-29 1951-04-29 Method of making ammeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB14808A DE859020C (en) 1951-04-29 1951-04-29 Method of making ammeline

Publications (1)

Publication Number Publication Date
DE859020C true DE859020C (en) 1952-12-11

Family

ID=6958160

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB14808A Expired DE859020C (en) 1951-04-29 1951-04-29 Method of making ammeline

Country Status (1)

Country Link
DE (1) DE859020C (en)

Similar Documents

Publication Publication Date Title
DE859020C (en) Method of making ammeline
DE937586C (en) Process for the preparation of symmetrical dialkyl ureas
DE943292C (en) Process for the preparation of aliphatic mercaptocarboxylic acids
DE752285C (en) Process for the preparation of 1, 3-dimethyl-4-imino-2, 6-dioxohexahydropyrimidine
DE943944C (en) Process for the production of new condensation products
DE962795C (en) Process for the preparation of N-monosubstituted monoureins of glyoxal
DE887815C (en) Process for the preparation of disubstituted carboxylic acid diamides
DE533132C (en) Process for the preparation of 1'-chloro-1-methylnaphthalene and 6'-chloro-6-methylnaphthalene tetrahydride-1íñ2íñ3íñ4
DE586446C (en) Process for the preparation of guanidine salts
DE869204C (en) Process for the preparation of diphenylmethane-4, 4'-diacetonitrile
DE975297C (en) Process for the production of phenylaethanolamines
DE1035154B (en) Process for the production of pure diphenylolalkanes
DE543108C (en) Process for the production of urea or products containing urea
DE929426C (en) Process for the preparation of therapeutically valuable aminosalicylic acid derivatives
DE961347C (en) Process for the preparation of tropic acid-N- (‰ ‰ -picolyl) -amides which are further substituted on the amide nitrogen
DE839491C (en) Process for the preparation of 1, 1-di- (p-chlorophenyl) ethane
AT128377B (en) Process for the representation of tanning substances.
DE490876C (en) Process for the production of guanidine salts
DE883751C (en) Process for the preparation of N, N'-diphenyl-p-phenylenediamine
CH252071A (en) Process for the preparation of a new amide derivative.
CH396866A (en) Process for the production of pivalic acid
CH207300A (en) Process for the preparation of a quaternary aminobenzylacylamine.
DE1047424B (en) Process for the production of resins from dicyandiamide, urea, melamine and paraformaldehyde
DE2641979A1 (en) PROCESS FOR THE PREPARATION OF 5-AMINOCARBONYL-2,4,6-TRIHYDROXYPYRIMIDINE
DE1593487B2 (en) Process for making triuret