BE835105A - Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree - Google Patents
Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'ureeInfo
- Publication number
- BE835105A BE835105A BE161453A BE161453A BE835105A BE 835105 A BE835105 A BE 835105A BE 161453 A BE161453 A BE 161453A BE 161453 A BE161453 A BE 161453A BE 835105 A BE835105 A BE 835105A
- Authority
- BE
- Belgium
- Prior art keywords
- formaldehyde
- urea
- aqueous solutions
- concentrated aqueous
- preparing concentrated
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
-
- 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
- C07C273/025—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 of solutions of urea and formaldehyde
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742451990 DE2451990C3 (de) | 1974-11-02 | 1974-11-02 | Verfahren zur Herstellung von konzentrierten, wäßrigen Lösungen von Formaleyhd und Harnstoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE835105A true BE835105A (fr) | 1976-04-30 |
Family
ID=5929817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE161453A BE835105A (fr) | 1974-11-02 | 1975-10-31 | Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5170727A (xx) |
| BE (1) | BE835105A (xx) |
| DE (1) | DE2451990C3 (xx) |
| FR (1) | FR2289537A1 (xx) |
| GB (1) | GB1517366A (xx) |
| IT (1) | IT1044595B (xx) |
| NL (1) | NL7512814A (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2411850A1 (fr) * | 1977-12-19 | 1979-07-13 | Reichhold Chemicals Inc | Procede de production continue de solutions aqueuses d'uree et de formaldehyde |
| DE2914135A1 (de) * | 1979-04-07 | 1980-10-23 | Basf Ag | Verfahren zur gleichzeitigen herstellung von konzentrierten, waessrigen formaldehyd/harnstoff-loesungen und formaldehydloesungen |
| DE3152005A1 (de) * | 1981-12-31 | 1983-07-07 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von konzentrierten, waessrigen loesungen von formaldehyd und harnstoff |
| EP3585515A1 (de) | 2017-02-24 | 2020-01-01 | Basf Se | Silber-katalysatorsystem mit verringertem druckabfall zur oxidativen dehydrierung von alkoholen |
| EP3539657A1 (en) | 2018-03-14 | 2019-09-18 | Basf Se | Improved catalysts comprising silver based intermetallic compounds |
-
1974
- 1974-11-02 DE DE19742451990 patent/DE2451990C3/de not_active Expired
-
1975
- 1975-10-23 GB GB4357075A patent/GB1517366A/en not_active Expired
- 1975-10-29 IT IT2877675A patent/IT1044595B/it active
- 1975-10-31 FR FR7533432A patent/FR2289537A1/fr active Granted
- 1975-10-31 NL NL7512814A patent/NL7512814A/xx not_active Application Discontinuation
- 1975-10-31 BE BE161453A patent/BE835105A/xx not_active IP Right Cessation
- 1975-10-31 JP JP13056975A patent/JPS5170727A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2451990B2 (de) | 1980-07-31 |
| GB1517366A (en) | 1978-07-12 |
| FR2289537A1 (fr) | 1976-05-28 |
| NL7512814A (nl) | 1976-05-04 |
| DE2451990C3 (de) | 1981-04-09 |
| JPS5170727A (en) | 1976-06-18 |
| DE2451990A1 (de) | 1976-05-13 |
| IT1044595B (it) | 1980-03-31 |
| FR2289537B1 (xx) | 1979-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: BASF A.G. Effective date: 19951031 |