ES346613A3 - Procedure for the purification of raw melamine. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the purification of raw melamine. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES346613A3 ES346613A3 ES346613A ES346613A ES346613A3 ES 346613 A3 ES346613 A3 ES 346613A3 ES 346613 A ES346613 A ES 346613A ES 346613 A ES346613 A ES 346613A ES 346613 A3 ES346613 A3 ES 346613A3
- Authority
- ES
- Spain
- Prior art keywords
- melamine
- translation
- purification
- procedure
- machine
- 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
- 229920000877 Melamine resin Polymers 0.000 title abstract 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 238000000746 purification Methods 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 230000002068 genetic effect Effects 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- QMNWYGTWTXOQTP-UHFFFAOYSA-N 1h-triazin-6-one Chemical compound O=C1C=CN=NN1 QMNWYGTWTXOQTP-UHFFFAOYSA-N 0.000 abstract 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedure for the purification of crude melamine, produced by heating an aqueous solution of a carbonic acid amide and containing genetic impurities including a hydroxytriazine, characterized in that a dispersion of said melamine accompanied by genetic impurities in aqueous ammonia that does not contain more than 3 % by weight of carbon dioxide is maintained at a temperature of approximately 140º to 230ºC, while maintaining the concentration of aqueous ammonia at approximately 8% to 28%, approximately NH3, based on the total weight of ammonia and water, and then the melamine is crystallized from a solution of the melamine thus treated in aqueous ammonia. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES346613A ES346613A3 (en) | 1967-10-31 | 1967-10-31 | Procedure for the purification of raw melamine. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES346613A ES346613A3 (en) | 1967-10-31 | 1967-10-31 | Procedure for the purification of raw melamine. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES346613A3 true ES346613A3 (en) | 1968-12-16 |
Family
ID=8446686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES346613A Expired ES346613A3 (en) | 1967-10-31 | 1967-10-31 | Procedure for the purification of raw melamine. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES346613A3 (en) |
-
1967
- 1967-10-31 ES ES346613A patent/ES346613A3/en not_active Expired
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