DE1768804A1 - Verfahren zur Herstellung von Autokondensationsprodukten von Harnstoff und zu deren Abtrennung aus dabei entstehenden Gemischen - Google Patents
Verfahren zur Herstellung von Autokondensationsprodukten von Harnstoff und zu deren Abtrennung aus dabei entstehenden GemischenInfo
- Publication number
- DE1768804A1 DE1768804A1 DE19681768804 DE1768804A DE1768804A1 DE 1768804 A1 DE1768804 A1 DE 1768804A1 DE 19681768804 DE19681768804 DE 19681768804 DE 1768804 A DE1768804 A DE 1768804A DE 1768804 A1 DE1768804 A1 DE 1768804A1
- Authority
- DE
- Germany
- Prior art keywords
- urea
- complex
- solution
- biuret
- triuret
- 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.)
- Pending
Links
- 239000004202 carbamide Substances 0.000 title claims description 60
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 58
- 239000000203 mixture Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000926 separation method Methods 0.000 title description 9
- 238000006243 chemical reaction Methods 0.000 claims description 39
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 33
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 26
- WNVQBUHCOYRLPA-UHFFFAOYSA-N triuret Chemical compound NC(=O)NC(=O)NC(N)=O WNVQBUHCOYRLPA-UHFFFAOYSA-N 0.000 claims description 25
- 239000000047 product Substances 0.000 claims description 18
- 239000008139 complexing agent Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 230000000536 complexating effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000197 pyrolysis Methods 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 239000007859 condensation product Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000009918 complex formation Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010019909 Hernia Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30575/67A GB1156099A (en) | 1967-07-03 | 1967-07-03 | Improvements in and relating to the Production of Auto-Condensation Products of Urea, in Particular Biuret. |
| GB3057568 | 1968-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1768804A1 true DE1768804A1 (de) | 1972-01-05 |
Family
ID=26260507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681768804 Pending DE1768804A1 (de) | 1967-07-03 | 1968-07-02 | Verfahren zur Herstellung von Autokondensationsprodukten von Harnstoff und zu deren Abtrennung aus dabei entstehenden Gemischen |
Country Status (5)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935260A (en) * | 1970-10-21 | 1976-01-27 | African Explosives & Chemical Industries Limited | Auto-condensation products of urea |
| US4345099A (en) * | 1981-08-10 | 1982-08-17 | Union Oil Company Of California | Method of selectively removing biuret from urea and compositions for use therein |
| US4645860A (en) * | 1983-12-30 | 1987-02-24 | Union Oil Company Of California | Biuret manufacture |
| US4645859A (en) * | 1983-12-30 | 1987-02-24 | Union Oil Company Of California | Methods for purifying biuret |
| US4698443A (en) * | 1985-07-10 | 1987-10-06 | Union Oil Company Of California | Biuret purification |
| DE102004005907B4 (de) | 2004-02-05 | 2006-01-05 | Uhde Gmbh | Anlage zur Herstellung von biuretarmem harnstoffhaltigem Düngemittelgranulat |
-
1967
- 1967-07-03 GB GB30575/67A patent/GB1156099A/en not_active Expired
-
1968
- 1968-07-01 NL NL6809275A patent/NL6809275A/xx unknown
- 1968-07-01 BE BE717459D patent/BE717459A/xx unknown
- 1968-07-02 DE DE19681768804 patent/DE1768804A1/de active Pending
- 1968-07-03 FR FR1571861D patent/FR1571861A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6809275A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1969-01-07 |
| BE717459A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1969-01-02 |
| FR1571861A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1969-06-20 |
| GB1156099A (en) | 1969-06-25 |
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