DE859020C - Method of making ammeline - Google Patents
Method of making ammelineInfo
- 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
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)
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) |
-
1951
- 1951-04-29 DE DEB14808A patent/DE859020C/en not_active Expired
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 |