NL161137B - PROCESS FOR THE PREPARATION OF UREA. - Google Patents
PROCESS FOR THE PREPARATION OF UREA.Info
- Publication number
- NL161137B NL161137B NL6808895.A NL6808895A NL161137B NL 161137 B NL161137 B NL 161137B NL 6808895 A NL6808895 A NL 6808895A NL 161137 B NL161137 B NL 161137B
- Authority
- NL
- Netherlands
- Prior art keywords
- urea
- preparation
- 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
- C07C273/04—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2102767 | 1967-09-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL6808895A NL6808895A (en) | 1969-04-01 |
NL161137B true NL161137B (en) | 1979-08-15 |
NL161137C NL161137C (en) | 1980-01-15 |
Family
ID=11175595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL6808895.A NL161137C (en) | 1967-09-29 | 1968-06-25 | METHOD FOR PREPARING UREA. |
Country Status (15)
Country | Link |
---|---|
JP (1) | JPS5432767B1 (en) |
AT (1) | AT290545B (en) |
BE (1) | BE719035A (en) |
CH (1) | CH487855A (en) |
CS (1) | CS155191B2 (en) |
DE (1) | DE1768776B2 (en) |
DK (1) | DK118396B (en) |
ES (1) | ES358855A1 (en) |
FR (1) | FR1576811A (en) |
GB (1) | GB1184004A (en) |
IE (1) | IE32209B1 (en) |
LU (1) | LU56630A1 (en) |
NL (1) | NL161137C (en) |
NO (1) | NO145949C (en) |
SE (1) | SE373574B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE446978B (en) * | 1977-05-05 | 1986-10-20 | Montedison Spa | ISOBARIC DOUBLE CIRCULATOR PROCEDURE FOR SYNTHETIZATION OF UREA DURING INTERMEDIATE PRODUCTION OF AMMONIUM CARBAMATE |
NL7713190A (en) * | 1977-11-30 | 1979-06-01 | Unie Van Kunstmestfab Bv | METHOD AND DEVICE FOR THE REMOVAL OF AMMONIUM CARBAMATE FROM A UREEA SYNTHESIS SOLUTION. |
IT1209532B (en) * | 1984-04-20 | 1989-08-30 | Snam Progetti | PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF. |
IN169678B (en) * | 1987-08-13 | 1991-11-30 | Austral Pacific Fertilizers | |
IT1274362B (en) | 1995-02-16 | 1997-07-17 | Snam Progetti | HIGH YIELD PROCEDURE FOR THE SYNTHESIS OF UREA |
ITMI20120013A1 (en) | 2012-01-09 | 2013-07-10 | Saipem Spa | PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION |
WO2023121443A1 (en) | 2021-12-20 | 2023-06-29 | Stamicarbon B.V. | Thermal stripping urea production |
-
1968
- 1968-06-21 DK DK296968AA patent/DK118396B/en unknown
- 1968-06-21 AT AT598768A patent/AT290545B/en not_active IP Right Cessation
- 1968-06-21 NO NO2461/68A patent/NO145949C/en unknown
- 1968-06-25 NL NL6808895.A patent/NL161137C/en not_active IP Right Cessation
- 1968-06-27 GB GB30814/68A patent/GB1184004A/en not_active Expired
- 1968-06-28 DE DE19681768776 patent/DE1768776B2/en not_active Ceased
- 1968-06-28 SE SE6808922A patent/SE373574B/en unknown
- 1968-07-08 JP JP4720368A patent/JPS5432767B1/ja active Pending
- 1968-07-25 IE IE894/68A patent/IE32209B1/en unknown
- 1968-08-01 LU LU56630D patent/LU56630A1/xx unknown
- 1968-08-02 BE BE719035D patent/BE719035A/xx not_active IP Right Cessation
- 1968-08-02 FR FR1576811D patent/FR1576811A/fr not_active Expired
- 1968-08-03 CH CH1166268A patent/CH487855A/en not_active IP Right Cessation
- 1968-09-16 CS CS686495A patent/CS155191B2/en unknown
- 1968-09-25 ES ES358855A patent/ES358855A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IE32209B1 (en) | 1973-05-16 |
SE373574B (en) | 1975-02-10 |
DE1768776A1 (en) | 1971-09-16 |
NL161137C (en) | 1980-01-15 |
JPS5432767B1 (en) | 1979-10-16 |
IE32209L (en) | 1969-03-29 |
CS155191B2 (en) | 1974-05-30 |
BE719035A (en) | 1969-01-16 |
DK118396B (en) | 1970-08-17 |
NO145949C (en) | 1982-06-30 |
ES358855A1 (en) | 1970-05-16 |
AT290545B (en) | 1971-06-11 |
DE1768776B2 (en) | 1973-05-03 |
FR1576811A (en) | 1969-08-01 |
NO145949B (en) | 1982-03-22 |
GB1184004A (en) | 1970-03-11 |
CH487855A (en) | 1970-03-31 |
NL6808895A (en) | 1969-04-01 |
LU56630A1 (en) | 1968-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: SNAM |
|
V4 | Lapsed because of reaching the maximum lifetime of a patent |