NL148879B - Werkwijze om ureum te bereiden. - Google Patents
Werkwijze om ureum te bereiden.Info
- Publication number
- NL148879B NL148879B NL676700668A NL6700668A NL148879B NL 148879 B NL148879 B NL 148879B NL 676700668 A NL676700668 A NL 676700668A NL 6700668 A NL6700668 A NL 6700668A NL 148879 B NL148879 B NL 148879B
- Authority
- NL
- Netherlands
- Prior art keywords
- preparing urea
- urea
- preparing
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/12—Carbamic acid or thiocarbamic acid; Salts thereof
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT143866 | 1966-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL6700668A NL6700668A (xx) | 1967-07-24 |
| NL148879B true NL148879B (nl) | 1976-03-15 |
Family
ID=11101458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL676700668A NL148879B (nl) | 1966-01-21 | 1967-01-16 | Werkwijze om ureum te bereiden. |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE692926A (xx) |
| CH (1) | CH485674A (xx) |
| CS (1) | CS167219B2 (xx) |
| FR (1) | FR1508004A (xx) |
| GB (1) | GB1173195A (xx) |
| NL (1) | NL148879B (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL187393C (nl) * | 1982-11-26 | 1991-09-16 | V I Kucheryavy T M Bogdanova D | Werkwijze voor het bereiden van ureum. |
| EP3656759A1 (en) * | 2018-11-22 | 2020-05-27 | Casale Sa | A process for the synthesis of urea |
-
1967
- 1967-01-16 NL NL676700668A patent/NL148879B/xx not_active IP Right Cessation
- 1967-01-17 FR FR91396A patent/FR1508004A/fr not_active Expired
- 1967-01-20 GB GB3058/67A patent/GB1173195A/en not_active Expired
- 1967-01-20 CH CH85567A patent/CH485674A/de not_active IP Right Cessation
- 1967-01-20 BE BE692926A patent/BE692926A/xx not_active IP Right Cessation
- 1967-01-23 CS CS533A patent/CS167219B2/cs unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6700668A (xx) | 1967-07-24 |
| CH485674A (de) | 1970-02-15 |
| DE1618636B2 (de) | 1975-08-07 |
| FR1508004A (fr) | 1967-12-29 |
| GB1173195A (en) | 1969-12-03 |
| DE1618636A1 (de) | 1971-04-01 |
| BE692926A (xx) | 1967-07-20 |
| CS167219B2 (xx) | 1976-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: MONTECATINI |
|
| V4 | Lapsed because of reaching the maxim lifetime of a patent |