NL285601A - - Google Patents
Info
- Publication number
- NL285601A NL285601A NL285601DA NL285601A NL 285601 A NL285601 A NL 285601A NL 285601D A NL285601D A NL 285601DA NL 285601 A NL285601 A NL 285601A
- Authority
- NL
- Netherlands
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
-
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2140661 | 1961-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL285601A true NL285601A (xx) |
Family
ID=11181287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL285601D NL285601A (xx) | 1961-11-28 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3287407A (xx) |
| AT (1) | AT238213B (xx) |
| CH (1) | CH420109A (xx) |
| DE (1) | DE1468229A1 (xx) |
| ES (1) | ES282862A1 (xx) |
| FR (1) | FR1339448A (xx) |
| GB (1) | GB945783A (xx) |
| NL (1) | NL285601A (xx) |
| SE (1) | SE314666B (xx) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1072293A (en) * | 1963-09-27 | 1967-06-14 | Nippon Catalytic Chem Ind | Method of recovering ammonia gas from an aqueous solution containing ammonia and carbon dioxide |
| AT351135B (de) * | 1977-06-08 | 1979-07-10 | Oemv Ag | Verfahren und vorrichtung zur reinigung von harnstoffloesungen |
| DE3044602A1 (de) * | 1980-11-27 | 1982-07-01 | Uhde Gmbh, 4600 Dortmund | Verfahren zur aufbereitung von kondensat aus harnstoff-produktionsanlagen |
| 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 |
| US4682999A (en) * | 1985-10-31 | 1987-07-28 | Union Oil Company Of California | Methods for enhancing the productivity of plants |
| RO131559A2 (ro) * | 2011-11-23 | 2016-12-30 | Farid Alekovich Batullin | Metodă pentru obţinerea carbamidei cristaline cu puritate ridicată |
| CN109070043B (zh) | 2016-05-03 | 2019-12-06 | 斯塔米卡邦有限公司 | 在控制缩二脲的情况下的尿素生产 |
| EP3452444B1 (en) | 2016-05-03 | 2020-06-10 | Stamicarbon B.V. | Controlling biuret in urea production |
| CN112745889B (zh) * | 2019-10-30 | 2023-01-10 | 中国石油化工股份有限公司 | 一种降低润滑油基础油浊点的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL95513C (xx) * | ||||
| US2046827A (en) * | 1933-08-09 | 1936-07-07 | Atmospheric Nitrogen Corp | Production of urea and nitrogen oxides |
| US2267133A (en) * | 1939-02-20 | 1941-12-23 | Solvay Process Co | Process for treating urea synthesis effluents |
| US2854482A (en) * | 1956-07-07 | 1958-09-30 | Lonza Electric & Chem Works | Process for the manufacture of urea |
| FR1252669A (fr) * | 1959-12-09 | 1961-02-03 | Toyo Koatsu Ind Inc | Procédé de préparation d'urée à basse teneur en biuret |
-
0
- NL NL285601D patent/NL285601A/xx unknown
-
1962
- 1962-10-25 GB GB40423/62A patent/GB945783A/en not_active Expired
- 1962-11-23 US US239464A patent/US3287407A/en not_active Expired - Lifetime
- 1962-11-23 DE DE19621468229 patent/DE1468229A1/de active Pending
- 1962-11-24 SE SE12648/62A patent/SE314666B/xx unknown
- 1962-11-26 FR FR916574A patent/FR1339448A/fr not_active Expired
- 1962-11-26 AT AT924762A patent/AT238213B/de active
- 1962-11-27 ES ES282862A patent/ES282862A1/es not_active Expired
- 1962-11-27 CH CH1390362A patent/CH420109A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1339448A (fr) | 1963-10-04 |
| AT238213B (de) | 1965-01-25 |
| CH420109A (de) | 1966-09-15 |
| GB945783A (en) | 1964-01-08 |
| US3287407A (en) | 1966-11-22 |
| ES282862A1 (es) | 1963-07-01 |
| DE1468229A1 (de) | 1968-12-12 |
| SE314666B (xx) | 1969-09-15 |