RO93532B1 - Procedeu de obtinere a unor derivati de uree tetrasubstituiti - Google Patents
Procedeu de obtinere a unor derivati de uree tetrasubstituitiInfo
- Publication number
- RO93532B1 RO93532B1 RO121960A RO12196086A RO93532B1 RO 93532 B1 RO93532 B1 RO 93532B1 RO 121960 A RO121960 A RO 121960A RO 12196086 A RO12196086 A RO 12196086A RO 93532 B1 RO93532 B1 RO 93532B1
- Authority
- RO
- Romania
- Prior art keywords
- urea derivatives
- tetrasubstituted urea
- dosing
- sodium hydroxide
- hydroxide solution
- Prior art date
Links
- 150000003672 ureas Chemical class 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 239000000243 solution Substances 0.000 abstract 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 abstract 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
- 239000012312 sodium hydride Substances 0.000 abstract 1
- 229910000104 sodium hydride Inorganic materials 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Ineventia se refera la un procedeu îmbunatatit de obtinere a unor derivati de uree tetrasubstituiti în special, N,N'-dialchil-N,N'-diarilureelor prin fosgenarea unui exces molar dublu de N-alchilanilina în prezenta unei solutii apoase de hidroid de sodiu, la temperaturi între 0-35 degree C, dozarea fosgenului si a solutiei apoase de hidroxid de sodiu facîndu-se concomitent si încalzirea amestecului de reactie rezultat la 60-80 degree C, timp în care pH-ul se mentine la 8-10 prin dozare de solutie apoasa de hidroxid de sodiu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO121960A RO93532B1 (ro) | 1986-01-23 | 1986-01-23 | Procedeu de obtinere a unor derivati de uree tetrasubstituiti |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO121960A RO93532B1 (ro) | 1986-01-23 | 1986-01-23 | Procedeu de obtinere a unor derivati de uree tetrasubstituiti |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO93532A2 RO93532A2 (ro) | 1987-12-31 |
| RO93532B1 true RO93532B1 (ro) | 1988-01-01 |
Family
ID=20118896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO121960A RO93532B1 (ro) | 1986-01-23 | 1986-01-23 | Procedeu de obtinere a unor derivati de uree tetrasubstituiti |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO93532B1 (ro) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659636B (zh) * | 2012-04-10 | 2014-03-05 | 重庆长风化学工业有限公司 | Ii号中定剂无碱生产工艺 |
-
1986
- 1986-01-23 RO RO121960A patent/RO93532B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO93532A2 (ro) | 1987-12-31 |
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