GB910198A - Preparation of melamine - Google Patents
Preparation of melamineInfo
- Publication number
- GB910198A GB910198A GB1014761A GB1014761A GB910198A GB 910198 A GB910198 A GB 910198A GB 1014761 A GB1014761 A GB 1014761A GB 1014761 A GB1014761 A GB 1014761A GB 910198 A GB910198 A GB 910198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melamine
- ammonia
- catalyst
- preparation
- phosphate
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Melamine is prepared by heating urea and/or a thermal decomposition product thereof (e.g. biuret, isocyanic acid or cyanuric acid) at a pressure not exceeding 2 atmospheres and at a temperature of at least 220 DEG C., in the presence of ammonia and of boron phosphate and/or aluminium phosphate. The ammonia may be used to maintain a fluidized bed of catalyst, the gases emergent therefrom being subsequently passed to a fixed bed of catalyst. Specifications 767,344, 825,729 and 910,197 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL249750 | 1960-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB910198A true GB910198A (en) | 1962-11-14 |
Family
ID=19752240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1014761A Expired GB910198A (en) | 1960-03-23 | 1961-03-20 | Preparation of melamine |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE601611A (en) |
CA (2) | CA633572A (en) |
CH (1) | CH409983A (en) |
DE (1) | DE1135482B (en) |
ES (1) | ES265903A1 (en) |
GB (1) | GB910198A (en) |
SE (1) | SE300211B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290309A (en) * | 1964-02-11 | 1966-12-06 | Chemical Construction Corp | Synthesis of melamine |
EP2072504A1 (en) * | 2007-12-20 | 2009-06-24 | DSMIP Assets B.V. | Process for the preparation of melamine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3218320A (en) * | 1961-06-19 | 1965-11-16 | Allied Chem | Process for producing a melamine-urea product |
-
0
- CA CA697084A patent/CA697084A/en not_active Expired
- CA CA633572A patent/CA633572A/en not_active Expired
-
1961
- 1961-03-20 GB GB1014761A patent/GB910198A/en not_active Expired
- 1961-03-21 ES ES0265903A patent/ES265903A1/en not_active Expired
- 1961-03-21 BE BE601611A patent/BE601611A/en unknown
- 1961-03-21 DE DE1961ST017602 patent/DE1135482B/en active Pending
- 1961-03-21 CH CH340561A patent/CH409983A/en unknown
- 1961-03-22 SE SE3044/61A patent/SE300211B/xx unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290309A (en) * | 1964-02-11 | 1966-12-06 | Chemical Construction Corp | Synthesis of melamine |
EP2072504A1 (en) * | 2007-12-20 | 2009-06-24 | DSMIP Assets B.V. | Process for the preparation of melamine |
WO2009080241A2 (en) * | 2007-12-20 | 2009-07-02 | Dsm Ip Assets B.V. | Process for the preparation of melamine |
WO2009080240A2 (en) * | 2007-12-20 | 2009-07-02 | Dsm Ip Assets B.V. | Process for the preparation of melamine |
WO2009080241A3 (en) * | 2007-12-20 | 2009-08-27 | Dsm Ip Assets B.V. | Process for the preparation of melamine |
WO2009080240A3 (en) * | 2007-12-20 | 2009-09-11 | Dsm Ip Assets B.V. | Process for the preparation of melamine |
Also Published As
Publication number | Publication date |
---|---|
BE601611A (en) | 1961-09-21 |
CA633572A (en) | 1961-12-26 |
CH409983A (en) | 1966-03-31 |
ES265903A1 (en) | 1961-10-01 |
CA697084A (en) | 1964-11-03 |
DE1135482B (en) | 1962-08-30 |
SE300211B (en) | 1968-04-22 |
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