AT344723B - Verfahren zur verminderung des biuretgehaltes von harnstoff - Google Patents
Verfahren zur verminderung des biuretgehaltes von harnstoffInfo
- Publication number
- AT344723B AT344723B AT406174A AT406174A AT344723B AT 344723 B AT344723 B AT 344723B AT 406174 A AT406174 A AT 406174A AT 406174 A AT406174 A AT 406174A AT 344723 B AT344723 B AT 344723B
- Authority
- AT
- Austria
- Prior art keywords
- urea
- reducing
- biuret content
- biuret
- 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 (2)
| Publication Number | Publication Date |
|---|---|
| ATA406174A ATA406174A (de) | 1977-12-15 |
| AT344723B true AT344723B (de) | 1978-08-10 |
Family
ID=26256424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT406174A AT344723B (de) | 1973-05-16 | 1974-05-16 | Verfahren zur verminderung des biuretgehaltes von harnstoff |
Country Status (18)
| Country | Link |
|---|---|
| AR (1) | AR213610A1 (es) |
| AT (1) | AT344723B (es) |
| BE (1) | BE815096A (es) |
| BG (1) | BG21603A3 (es) |
| BR (1) | BR7403961D0 (es) |
| CA (1) | CA1019344A (es) |
| CH (1) | CH617672A5 (es) |
| CS (1) | CS203001B2 (es) |
| DD (1) | DD113897A5 (es) |
| EG (1) | EG11437A (es) |
| FR (1) | FR2229690B1 (es) |
| GB (1) | GB1404098A (es) |
| IN (1) | IN142126B (es) |
| LU (1) | LU70102A1 (es) |
| NL (1) | NL7406618A (es) |
| SE (1) | SE420196B (es) |
| SU (1) | SU953978A3 (es) |
| ZA (1) | ZA743136B (es) |
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 |
| 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 |
-
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 EG EG175/74A patent/EG11437A/xx active
- 1974-05-15 BR BR3961/74A patent/BR7403961D0/pt 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 AT AT406174A patent/AT344723B/de not_active IP Right Cessation
- 1974-05-16 SU SU742026956A patent/SU953978A3/ru active
- 1974-05-16 FR FR7417058A patent/FR2229690B1/fr not_active Expired
- 1974-05-16 SE SE7406519A patent/SE420196B/xx 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 CH CH674574A patent/CH617672A5/it not_active IP Right Cessation
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 1974-05-16 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 CA CA200,114A patent/CA1019344A/en not_active Expired
- 1974-05-16 BG BG26705A patent/BG21603A3/xx unknown
- 1974-05-16 ZA ZA00743136A patent/ZA743136B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SU953978A3 (ru) | 1982-08-23 |
| DD113897A5 (es) | 1975-07-05 |
| ATA406174A (de) | 1977-12-15 |
| LU70102A1 (es) | 1976-04-13 |
| ZA743136B (en) | 1975-08-27 |
| BR7403961D0 (pt) | 1974-12-24 |
| FR2229690B1 (es) | 1976-12-24 |
| BG21603A3 (es) | 1976-07-20 |
| CS203001B2 (en) | 1981-02-27 |
| SE420196B (sv) | 1981-09-21 |
| FR2229690A1 (es) | 1974-12-13 |
| NL7406618A (es) | 1974-11-19 |
| AU6904674A (en) | 1975-11-20 |
| CH617672A5 (en) | 1980-06-13 |
| EG11437A (en) | 1977-08-15 |
| GB1404098A (en) | 1975-08-28 |
| BE815096A (fr) | 1974-11-18 |
| IN142126B (es) | 1977-06-04 |
| CA1019344A (en) | 1977-10-18 |
| AR213610A1 (es) | 1979-02-28 |
| DE2423890B2 (de) | 1976-04-15 |
| DE2423890A1 (de) | 1974-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee | ||
| ELJ | Ceased due to non-payment of the annual fee |