BR7403961D0 - Processo para reduzir o teor de biureto da ureia - Google Patents
Processo para reduzir o teor de biureto da ureiaInfo
- Publication number
- BR7403961D0 BR7403961D0 BR3961/74A BR396174A BR7403961D0 BR 7403961 D0 BR7403961 D0 BR 7403961D0 BR 3961/74 A BR3961/74 A BR 3961/74A BR 396174 A BR396174 A BR 396174A BR 7403961 D0 BR7403961 D0 BR 7403961D0
- Authority
- BR
- Brazil
- Prior art keywords
- reduce
- biuret content
- urea biuret
- urea
- content
- 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 |
|---|---|
| BR7403961D0 true BR7403961D0 (pt) | 1974-12-24 |
Family
ID=26256424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR3961/74A BR7403961D0 (pt) | 1973-05-16 | 1974-05-15 | Processo para reduzir o teor de biureto da ureia |
Country Status (18)
| Country | Link |
|---|---|
| AR (1) | AR213610A1 (fr) |
| AT (1) | AT344723B (fr) |
| BE (1) | BE815096A (fr) |
| BG (1) | BG21603A3 (fr) |
| BR (1) | BR7403961D0 (fr) |
| CA (1) | CA1019344A (fr) |
| CH (1) | CH617672A5 (fr) |
| CS (1) | CS203001B2 (fr) |
| DD (1) | DD113897A5 (fr) |
| EG (1) | EG11437A (fr) |
| FR (1) | FR2229690B1 (fr) |
| GB (1) | GB1404098A (fr) |
| IN (1) | IN142126B (fr) |
| LU (1) | LU70102A1 (fr) |
| NL (1) | NL7406618A (fr) |
| SE (1) | SE420196B (fr) |
| SU (1) | SU953978A3 (fr) |
| ZA (1) | ZA743136B (fr) |
Families Citing this family (4)
| 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 |
-
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 SU SU742026956A patent/SU953978A3/ru active
- 1974-05-16 DD DD178556A patent/DD113897A5/xx unknown
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 1974-05-16 CA CA200,114A patent/CA1019344A/fr not_active Expired
- 1974-05-16 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 CS CS743519A patent/CS203001B2/cs unknown
- 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 FR FR7417058A patent/FR2229690B1/fr not_active Expired
- 1974-05-16 BG BG26705A patent/BG21603A3/xx unknown
- 1974-05-16 SE SE7406519A patent/SE420196B/xx not_active IP Right Cessation
- 1974-05-16 BE BE144365A patent/BE815096A/fr not_active IP Right Cessation
- 1974-05-16 ZA ZA00743136A patent/ZA743136B/xx unknown
- 1974-05-16 AT AT406174A patent/AT344723B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BG21603A3 (fr) | 1976-07-20 |
| IN142126B (fr) | 1977-06-04 |
| DD113897A5 (fr) | 1975-07-05 |
| ATA406174A (de) | 1977-12-15 |
| NL7406618A (fr) | 1974-11-19 |
| CH617672A5 (en) | 1980-06-13 |
| FR2229690A1 (fr) | 1974-12-13 |
| SE420196B (sv) | 1981-09-21 |
| DE2423890B2 (de) | 1976-04-15 |
| CS203001B2 (en) | 1981-02-27 |
| AU6904674A (en) | 1975-11-20 |
| BE815096A (fr) | 1974-11-18 |
| ZA743136B (en) | 1975-08-27 |
| GB1404098A (en) | 1975-08-28 |
| FR2229690B1 (fr) | 1976-12-24 |
| AR213610A1 (es) | 1979-02-28 |
| CA1019344A (fr) | 1977-10-18 |
| DE2423890A1 (de) | 1974-12-12 |
| AT344723B (de) | 1978-08-10 |
| LU70102A1 (fr) | 1976-04-13 |
| SU953978A3 (ru) | 1982-08-23 |
| EG11437A (en) | 1977-08-15 |
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