GB751418A - Production of hexamethylene tetramine - Google Patents
Production of hexamethylene tetramineInfo
- Publication number
- GB751418A GB751418A GB14238/54A GB1423854A GB751418A GB 751418 A GB751418 A GB 751418A GB 14238/54 A GB14238/54 A GB 14238/54A GB 1423854 A GB1423854 A GB 1423854A GB 751418 A GB751418 A GB 751418A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- hexamethylene tetramine
- reaction zone
- temperature
- gaseous
- 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
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains three hetero rings
- C07D487/18—Bridged systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hexamethylene tetramine is produced by reacting gaseous formaldehyde with gaseous ammonia while introducing cold water or a cold inert gas into the reaction zone to maintain the temperature within the range of 100-140 DEG C. A vapour mixture, containing formaldehyde, obtained by oxidation of methanol or methane, may be used as starting material. The water is preferably passed into the reaction zone through jets, if desired with the aid of an auxiliary gas. The amount of water is preferably adjusted to maintain the temperature of the gaseous mixture below the desublimation point of hexamethylene tetramine (135 DEG C.) and above the dew point of water. The exit gases may be partially condensed to obtain an aqueous solution containing a minor quantity of hexamethylene tetramine and excess ammonia. This solution may be added to the water introduced into the reaction zone. The desublimed hexamethylene tetramine collects at the bottom of the reactor and may be removed by a screw conveyer or swing arm. The walls of the reactor may be maintained at a temperature below the dew point of the water vapour contained in the reaction gases so that they are kept moist whereby any hexamethylene tetramine contacting the walls will be dissolved and may be recovered by collecting the solution. A detailed example is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE751418X | 1953-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB751418A true GB751418A (en) | 1956-06-27 |
Family
ID=6651970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14238/54A Expired GB751418A (en) | 1953-05-16 | 1954-05-14 | Production of hexamethylene tetramine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB751418A (en) |
-
1954
- 1954-05-14 GB GB14238/54A patent/GB751418A/en not_active Expired
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