ZA743136B - Process for reducing the biuret content in urea - Google Patents
Process for reducing the biuret content in ureaInfo
- Publication number
- ZA743136B ZA743136B ZA00743136A ZA743136A ZA743136B ZA 743136 B ZA743136 B ZA 743136B ZA 00743136 A ZA00743136 A ZA 00743136A ZA 743136 A ZA743136 A ZA 743136A ZA 743136 B ZA743136 B ZA 743136B
- Authority
- ZA
- South Africa
- Prior art keywords
- urea
- reducing
- biuret content
- biuret
- content
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 title 1
- 239000004202 carbamide Substances 0.000 title 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)
- Phenolic Resins Or Amino Resins (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2327273A GB1404098A (en) | 1973-05-16 | 1973-05-16 | Process for reducing the biuret content in urea |
| IT2416173A IT987491B (it) | 1973-05-16 | 1973-05-16 | Procedimento per ridurre il con tenuto di biureto nella urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA743136B true ZA743136B (en) | 1975-08-27 |
Family
ID=26256424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA00743136A ZA743136B (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
Country Status (18)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102004005907B4 (de) | 2004-02-05 | 2006-01-05 | Uhde Gmbh | Anlage zur Herstellung von biuretarmem harnstoffhaltigem Düngemittelgranulat |
| RO131559A2 (ro) * | 2011-11-23 | 2016-12-30 | Farid Alekovich Batullin | Metodă pentru obţinerea carbamidei cristaline cu puritate ridicată |
| DE102019118702A1 (de) | 2019-07-10 | 2021-01-14 | Thyssenkrupp Ag | Reduzierung der biuretgeneration in der harnstoffproduktion |
| CN115738359A (zh) * | 2022-10-20 | 2023-03-07 | 江苏可兰素环保科技有限公司 | 一种尿素颗粒的萃取提纯工艺 |
-
1973
- 1973-05-16 GB GB2327273A patent/GB1404098A/en not_active Expired
-
1974
- 1974-05-13 AR AR253709A patent/AR213610A1/es active
- 1974-05-15 BR BR3961/74A patent/BR7403961D0/pt unknown
- 1974-05-15 EG EG175/74A patent/EG11437A/xx active
- 1974-05-16 BE BE144365A patent/BE815096A/xx not_active IP Right Cessation
- 1974-05-16 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 AT AT406174A patent/AT344723B/de not_active IP Right Cessation
- 1974-05-16 SU SU742026956A patent/SU953978A3/ru active
- 1974-05-16 BG BG026705A patent/BG21603A3/xx unknown
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 1974-05-16 DD DD178556A patent/DD113897A5/xx unknown
- 1974-05-16 SE SE7406519A patent/SE420196B/xx not_active IP Right Cessation
- 1974-05-16 CS CS743519A patent/CS203001B2/cs unknown
- 1974-05-16 LU LU70102A patent/LU70102A1/xx unknown
- 1974-05-16 CH CH674574A patent/CH617672A5/it not_active IP Right Cessation
- 1974-05-16 FR FR7417058A patent/FR2229690B1/fr not_active Expired
- 1974-05-16 CA CA200,114A patent/CA1019344A/en not_active Expired
- 1974-05-16 ZA ZA00743136A patent/ZA743136B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU70102A1 (enrdf_load_stackoverflow) | 1976-04-13 |
| CH617672A5 (en) | 1980-06-13 |
| SE420196B (sv) | 1981-09-21 |
| BG21603A3 (bg) | 1976-07-20 |
| AU6904674A (en) | 1975-11-20 |
| CS203001B2 (en) | 1981-02-27 |
| NL7406618A (enrdf_load_stackoverflow) | 1974-11-19 |
| DE2423890B2 (de) | 1976-04-15 |
| GB1404098A (en) | 1975-08-28 |
| IN142126B (enrdf_load_stackoverflow) | 1977-06-04 |
| ATA406174A (de) | 1977-12-15 |
| BE815096A (fr) | 1974-11-18 |
| DD113897A5 (enrdf_load_stackoverflow) | 1975-07-05 |
| EG11437A (en) | 1977-08-15 |
| BR7403961D0 (pt) | 1974-12-24 |
| SU953978A3 (ru) | 1982-08-23 |
| AT344723B (de) | 1978-08-10 |
| FR2229690A1 (enrdf_load_stackoverflow) | 1974-12-13 |
| FR2229690B1 (enrdf_load_stackoverflow) | 1976-12-24 |
| CA1019344A (en) | 1977-10-18 |
| DE2423890A1 (de) | 1974-12-12 |
| AR213610A1 (es) | 1979-02-28 |
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