GB1314660A - Processes for the production of hexamethylenetetramine pellets - Google Patents
Processes for the production of hexamethylenetetramine pelletsInfo
- Publication number
- GB1314660A GB1314660A GB1314660DA GB1314660A GB 1314660 A GB1314660 A GB 1314660A GB 1314660D A GB1314660D A GB 1314660DA GB 1314660 A GB1314660 A GB 1314660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- hexamethylenetetramine
- hexamethylene tetramine
- solution
- fluidized bed
- 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)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
1314660 Hexamethylenetetramine TENNECO CHEMICALS Inc 24 Sept 1971 34540/72 Addition to 1305041 Heading C2C Uniform free - flowing spheres of hexamethylenetetramine are prepared by a continuous process by (a) passing air heated to a temperature below the decomposition temperature of hexamethylenetetramine up through a confined zone containing finely-divided particles of hexamethylene tetramine at a flow rate sufficient to form a fluidized bed of the particles; (b) spraying into the fluidized bed an aqueous solution which contains 25-35% (by weight) of hexamethylene tetramine and has a pH of 7À0-8À0 in an amount such that the water in the solution is vaporized by the heated air, thereby coating the finely divided particles with hexamethylene tetramine; (c) injecting into the fluidized bed particles of hexamethylene tetramine smaller in size than the average size of the particles in the bed, the particles being injected downwards; and (d) discharging a portion of the hexamethylenetetramine particles from the bed and screening these to obtain a uniform, free-flowing product. The starting solution may be obtained by reacting ammonia with aqueous formaldehyde solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3454072 | 1971-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1314660A true GB1314660A (en) | 1973-04-26 |
Family
ID=10366899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1314660D Expired GB1314660A (en) | 1971-09-24 | 1971-09-24 | Processes for the production of hexamethylenetetramine pellets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1314660A (en) |
-
1971
- 1971-09-24 GB GB1314660D patent/GB1314660A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |