SE420196B - Forfarande for minskning av biurethalten i karbamid - Google Patents
Forfarande for minskning av biurethalten i karbamidInfo
- Publication number
- SE420196B SE420196B SE7406519A SE7406519A SE420196B SE 420196 B SE420196 B SE 420196B SE 7406519 A SE7406519 A SE 7406519A SE 7406519 A SE7406519 A SE 7406519A SE 420196 B SE420196 B SE 420196B
- Authority
- SE
- Sweden
- Prior art keywords
- biuretic
- carbamid
- contents
- procedure
- reducing
- Prior art date
Links
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 |
|---|---|---|---|
| IT2416173A IT987491B (it) | 1973-05-16 | 1973-05-16 | Procedimento per ridurre il con tenuto di biureto nella urea |
| GB2327273A GB1404098A (en) | 1973-05-16 | 1973-05-16 | Process for reducing the biuret content in urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE420196B true SE420196B (sv) | 1981-09-21 |
Family
ID=26256424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7406519A SE420196B (sv) | 1973-05-16 | 1974-05-16 | Forfarande for minskning av biurethalten i karbamid |
Country Status (18)
| Country | Link |
|---|---|
| AR (1) | AR213610A1 (sv) |
| AT (1) | AT344723B (sv) |
| BE (1) | BE815096A (sv) |
| BG (1) | BG21603A3 (sv) |
| BR (1) | BR7403961D0 (sv) |
| CA (1) | CA1019344A (sv) |
| CH (1) | CH617672A5 (sv) |
| CS (1) | CS203001B2 (sv) |
| DD (1) | DD113897A5 (sv) |
| EG (1) | EG11437A (sv) |
| FR (1) | FR2229690B1 (sv) |
| GB (1) | GB1404098A (sv) |
| IN (1) | IN142126B (sv) |
| LU (1) | LU70102A1 (sv) |
| NL (1) | NL7406618A (sv) |
| SE (1) | SE420196B (sv) |
| SU (1) | SU953978A3 (sv) |
| ZA (1) | ZA743136B (sv) |
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 |
| RU2472777C1 (ru) * | 2011-11-23 | 2013-01-20 | Фарид Алекович Батуллин | Способ получения кристаллического карбамида высокой очистки |
| 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 ZA ZA00743136A patent/ZA743136B/xx unknown
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 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 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 SE SE7406519A patent/SE420196B/sv not_active IP Right Cessation
- 1974-05-16 CH CH674574A patent/CH617672A5/it not_active IP Right Cessation
- 1974-05-16 LU LU70102A patent/LU70102A1/xx unknown
- 1974-05-16 DD DD178556A patent/DD113897A5/xx unknown
- 1974-05-16 BE BE144365A patent/BE815096A/xx not_active IP Right Cessation
- 1974-05-16 CS CS743519A patent/CS203001B2/cs unknown
- 1974-05-16 CA CA200,114A patent/CA1019344A/en not_active Expired
- 1974-05-16 BG BG026705A patent/BG21603A3/xx unknown
- 1974-05-16 FR FR7417058A patent/FR2229690B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ATA406174A (de) | 1977-12-15 |
| LU70102A1 (sv) | 1976-04-13 |
| AU6904674A (en) | 1975-11-20 |
| EG11437A (en) | 1977-08-15 |
| BE815096A (fr) | 1974-11-18 |
| FR2229690B1 (sv) | 1976-12-24 |
| SU953978A3 (ru) | 1982-08-23 |
| ZA743136B (en) | 1975-08-27 |
| FR2229690A1 (sv) | 1974-12-13 |
| BG21603A3 (bg) | 1976-07-20 |
| DE2423890B2 (de) | 1976-04-15 |
| AT344723B (de) | 1978-08-10 |
| CA1019344A (en) | 1977-10-18 |
| CS203001B2 (en) | 1981-02-27 |
| NL7406618A (sv) | 1974-11-19 |
| IN142126B (sv) | 1977-06-04 |
| DE2423890A1 (de) | 1974-12-12 |
| CH617672A5 (en) | 1980-06-13 |
| AR213610A1 (es) | 1979-02-28 |
| GB1404098A (en) | 1975-08-28 |
| DD113897A5 (sv) | 1975-07-05 |
| BR7403961D0 (pt) | 1974-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 7406519-4 Effective date: 19880318 Format of ref document f/p: F |