GB561186A - Manufacture of melamine - Google Patents
Manufacture of melamineInfo
- Publication number
- GB561186A GB561186A GB1453442A GB1453442A GB561186A GB 561186 A GB561186 A GB 561186A GB 1453442 A GB1453442 A GB 1453442A GB 1453442 A GB1453442 A GB 1453442A GB 561186 A GB561186 A GB 561186A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dicyandiamide
- salt
- guanidine
- melamine
- biguanide
- 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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Melamine is prepared by fusing cyanamide or dicyandiamide in a molten bath containing a relatively heat-stable salt of guanidine, biguanide or a substituted derivative of guanidine or biguanide, or a compound which will react with the cyanamide or dicyandiamide to produce such a salt, the reaction being carried out in presence of added ammonia. Thus dicyandiamide and ammonium chloride are fused together, further additions of dicyandiamide being made while a stream of ammonia is injected into the reaction mixture. In other examples guanidine hydrochloride is used as the salt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1453442A GB561186A (en) | 1942-10-16 | 1942-10-16 | Manufacture of melamine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1453442A GB561186A (en) | 1942-10-16 | 1942-10-16 | Manufacture of melamine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB561186A true GB561186A (en) | 1944-05-09 |
Family
ID=10042934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1453442A Expired GB561186A (en) | 1942-10-16 | 1942-10-16 | Manufacture of melamine |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB561186A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2662868A (en) * | 1950-02-03 | 1953-12-15 | Sueddeutsche Kalkstickstoff | Preparation of synthetic resins from dicyanodiamide |
DE1166205B (en) * | 1960-03-25 | 1964-03-26 | Sueddeutsche Kalkstickstoff | Process for the continuous production of melamine from dicyandiamide |
CN113735075A (en) * | 2021-09-26 | 2021-12-03 | 青岛科技大学 | Preparation method of red carbon nitride wide-spectral-response photocatalyst and product |
-
1942
- 1942-10-16 GB GB1453442A patent/GB561186A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2662868A (en) * | 1950-02-03 | 1953-12-15 | Sueddeutsche Kalkstickstoff | Preparation of synthetic resins from dicyanodiamide |
DE1166205B (en) * | 1960-03-25 | 1964-03-26 | Sueddeutsche Kalkstickstoff | Process for the continuous production of melamine from dicyandiamide |
CN113735075A (en) * | 2021-09-26 | 2021-12-03 | 青岛科技大学 | Preparation method of red carbon nitride wide-spectral-response photocatalyst and product |
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