IT7927749A0 - Procedimento per la preparazione di urea. - Google Patents
Procedimento per la preparazione di urea.Info
- Publication number
- IT7927749A0 IT7927749A0 IT7927749A IT2774979A IT7927749A0 IT 7927749 A0 IT7927749 A0 IT 7927749A0 IT 7927749 A IT7927749 A IT 7927749A IT 2774979 A IT2774979 A IT 2774979A IT 7927749 A0 IT7927749 A0 IT 7927749A0
- Authority
- IT
- Italy
- Prior art keywords
- urea
- procedure
- preparation
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-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
- C07C273/04—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 from carbon dioxide and ammonia
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 |
---|---|---|---|
JP14813178A JPS5573651A (en) | 1978-11-30 | 1978-11-30 | Preparation of urea |
Publications (1)
Publication Number | Publication Date |
---|---|
IT7927749A0 true IT7927749A0 (it) | 1979-11-30 |
Family
ID=15445946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT7927749A IT7927749A0 (it) | 1978-11-30 | 1979-11-30 | Procedimento per la preparazione di urea. |
Country Status (12)
Country | Link |
---|---|
US (1) | US4231961A (it) |
JP (1) | JPS5573651A (it) |
AR (1) | AR218563A1 (it) |
BR (1) | BR7907496A (it) |
CA (1) | CA1113495A (it) |
DE (1) | DE2944948A1 (it) |
EG (1) | EG14032A (it) |
FR (1) | FR2442831A1 (it) |
GB (1) | GB2040283B (it) |
IN (1) | IN151159B (it) |
IT (1) | IT7927749A0 (it) |
NL (1) | NL7908658A (it) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5746954A (en) * | 1980-09-05 | 1982-03-17 | Mitsui Toatsu Chem Inc | Synthesis of urea |
JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
GB2089786B (en) * | 1980-12-23 | 1985-02-20 | Mitsui Toatsu Chemicals | Process for synthesizing urea |
JPS57128669A (en) * | 1981-02-03 | 1982-08-10 | Toyo Eng Corp | Improvement of urea preparation process |
JPS63112552A (ja) * | 1986-10-30 | 1988-05-17 | Toyo Eng Corp | 未転化物の分離方法 |
NL8602769A (nl) * | 1986-11-03 | 1988-06-01 | Stamicarbon | Werkwijze voor het concentreren van een ureumoplossing en inrichting voor het uitvoeren van de werkwijze. |
IN169678B (it) * | 1987-08-13 | 1991-11-30 | Austral Pacific Fertilizers | |
CH679485A5 (it) * | 1989-12-29 | 1992-02-28 | Ammonia Casale Sa | |
US5316554A (en) * | 1992-06-03 | 1994-05-31 | Hansen Charles N | Method for processing crystalline ammonium carbamate |
NL1020388C2 (nl) * | 2002-04-15 | 2003-10-17 | Dsm Nv | Werkwijze voor de bereiding van ureum. |
NL1023303C2 (nl) * | 2003-04-29 | 2004-11-01 | Dsm Nv | Werkwijze voor de bereiding van een ureum- en formaldehydebevattende waterige oplossing. |
NL1027314C2 (nl) * | 2004-10-22 | 2006-04-25 | Dsm Ip Assets Bv | Werkwijze voor de produktie van een melamine en aldehyde bevattende waterige stroom. |
CN107400066B (zh) * | 2017-08-08 | 2020-04-24 | 内蒙古鄂尔多斯联合化工有限公司 | 一种高品质尿素生产方法及生产系统 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL101446C (it) * | 1960-04-08 | |||
US3816528A (en) * | 1970-11-16 | 1974-06-11 | Chemical Construction Corp | Urea synthesis process |
US4003928A (en) * | 1971-02-03 | 1977-01-18 | Stamicarbon N.V. | Process for the preparation of urea |
BE787832A (fr) * | 1971-09-02 | 1973-02-22 | Stamicarbon | Procede pour la preparation d'uree |
NL172058C (nl) * | 1972-06-12 | 1983-07-01 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
JPS5535378B2 (it) * | 1973-02-14 | 1980-09-12 | ||
JPS585190B2 (ja) * | 1975-09-22 | 1983-01-29 | 三井東圧化学株式会社 | 尿素合成における未反応物の分離回収方法 |
JPS5268129A (en) * | 1975-12-05 | 1977-06-06 | Mitsui Toatsu Chem Inc | Recovery of unreacted material and heat on urea synthesis |
NL174548C (nl) * | 1977-05-05 | 1988-05-16 | Montedison Spa | Werkwijze voor het bereiden van ureum door reaktie van ammoniak en kooldioxyde. |
-
1978
- 1978-11-30 JP JP14813178A patent/JPS5573651A/ja active Granted
-
1979
- 1979-10-31 IN IN763/DEL/79A patent/IN151159B/en unknown
- 1979-11-05 US US06/091,444 patent/US4231961A/en not_active Expired - Lifetime
- 1979-11-07 DE DE19792944948 patent/DE2944948A1/de not_active Withdrawn
- 1979-11-08 AR AR278813A patent/AR218563A1/es active
- 1979-11-19 BR BR7907496A patent/BR7907496A/pt not_active IP Right Cessation
- 1979-11-28 EG EG711/79A patent/EG14032A/xx active
- 1979-11-29 NL NL7908658A patent/NL7908658A/nl not_active Application Discontinuation
- 1979-11-30 GB GB7941349A patent/GB2040283B/en not_active Expired
- 1979-11-30 CA CA341,014A patent/CA1113495A/en not_active Expired
- 1979-11-30 FR FR7929513A patent/FR2442831A1/fr active Granted
- 1979-11-30 IT IT7927749A patent/IT7927749A0/it unknown
Also Published As
Publication number | Publication date |
---|---|
EG14032A (en) | 1983-12-31 |
NL7908658A (nl) | 1980-06-03 |
FR2442831B1 (it) | 1981-11-27 |
GB2040283A (en) | 1980-08-28 |
IN151159B (it) | 1983-02-26 |
DE2944948A1 (de) | 1980-06-12 |
FR2442831A1 (fr) | 1980-06-27 |
CA1113495A (en) | 1981-12-01 |
JPS5715832B2 (it) | 1982-04-01 |
US4231961A (en) | 1980-11-04 |
JPS5573651A (en) | 1980-06-03 |
GB2040283B (en) | 1983-05-05 |
AR218563A1 (es) | 1980-06-13 |
BR7907496A (pt) | 1980-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IT7920479A0 (it) | Procedimento per la preparazione di elettrodi. | |
IT7921073A0 (it) | Procedimento per la preparazione di ammine alifatiche. | |
IT7925109A0 (it) | Procedimento per la preparazione di tetrafluoroetano. | |
IT1124851B (it) | Procedimento eterogeneo per la preparazione di 1,1-diesteri | |
IT7927749A0 (it) | Procedimento per la preparazione di urea. | |
IT7926729A0 (it) | Procedimento per la preparazione di coloranti cianazoici. | |
IT8019504A0 (it) | Procedimento per la preparazione selettiva di isosorbite-5-nitrato. | |
IT7822004A0 (it) | Procedimento per la preparazione di guanidina. | |
IT7928203A0 (it) | Procedimento di preparazione di ammine. | |
IT7923692A0 (it) | Procedimento per la preparazione di poliolefine. | |
IT7925114A0 (it) | Procedimento per la fabbricazione di chiodi. | |
IT7826596A0 (it) | Procedimento per la preparazione di funanoni. | |
IT1120037B (it) | Perfezionato procedimento per la preparazione di p-amminofenolo | |
IT7925919A0 (it) | Procedimento per la preparazione di plastisoli. | |
IT7923367A0 (it) | Procedimento per la preparazione di composti del tipo-indaco. | |
IT7947792A0 (it) | Procedimento per la preparazione di n-etiletilendiammina | |
IT1207205B (it) | Procedimento per la preparazione di ciclopropan-nitrili | |
IT7920415A0 (it) | Preparazione di ceruletide. procedimento per la | |
IT1123731B (it) | Procedimento per la preparazione di 1,2,3-tiadiazol-5-il-uree | |
IT8021231A0 (it) | Procedimento per la preparazione di 2-amminopirazine sostituite. | |
IT7924532A0 (it) | Procedimento per la preparazione di confetture. | |
IT7825311A0 (it) | Procedimento per la preparazione di cloro-s-triazina trioni. | |
IT1227791B (it) | Procedimento per la preparazione di 7,8 dicloro-tetraidro-isochinolina | |
IT7919085A0 (it) | Procedimento per la preparazione di eparina. | |
IT7924615A0 (it) | Triciclazolo. procedimento per la preparazione di |