FR2289537A1 - 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
- FR2289537A1 FR2289537A1 FR7533432A FR7533432A FR2289537A1 FR 2289537 A1 FR2289537 A1 FR 2289537A1 FR 7533432 A FR7533432 A FR 7533432A FR 7533432 A FR7533432 A FR 7533432A FR 2289537 A1 FR2289537 A1 FR 2289537A1
- Authority
- FR
- France
- Prior art keywords
- formaldehyde
- urea
- aqueous solutions
- concentrated aqueous
- preparing concentrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title 1
- 239000007864 aqueous solution Substances 0.000 title 1
- 239000004202 carbamide Substances 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
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 (2)
| Publication Number | Publication Date |
|---|---|
| FR2289537A1 true FR2289537A1 (fr) | 1976-05-28 |
| FR2289537B1 FR2289537B1 (fr) | 1979-07-06 |
Family
ID=5929817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7533432A Granted FR2289537A1 (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 (fr) |
| BE (1) | BE835105A (fr) |
| DE (1) | DE2451990C3 (fr) |
| FR (1) | FR2289537A1 (fr) |
| GB (1) | GB1517366A (fr) |
| IT (1) | IT1044595B (fr) |
| NL (1) | NL7512814A (fr) |
Cited By (2)
| 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 |
| EP0083427A1 (fr) * | 1981-12-31 | 1983-07-13 | BASF Aktiengesellschaft | Procédé pour la préparation de solutions concentrées, aqueuses du formaldéhyde et de l'urée |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2914135A1 (de) * | 1979-04-07 | 1980-10-23 | Basf Ag | Verfahren zur gleichzeitigen herstellung von konzentrierten, waessrigen formaldehyd/harnstoff-loesungen und formaldehydloesungen |
| RU2142964C1 (ru) * | 1998-03-11 | 1999-12-20 | Открытое акционерное общество "Тольяттиазот" | Способ получения карбамидоформальдегидного концентрата |
| RU2287517C1 (ru) * | 2005-09-21 | 2006-11-20 | Виталий Владимирович Калужников | Способ получения формалина или карбамидоформальдегидного раствора |
| RU2331654C1 (ru) * | 2007-02-15 | 2008-08-20 | ОАО "Тольяттиазот" | Способ получения карбамидоформальдегидного концентрата |
| RU2418008C1 (ru) * | 2009-10-09 | 2011-05-10 | Открытое акционерное общество "Тольяттиазот" | Способ получения карбамидоформальдегидного концентрата |
| WO2018153736A1 (fr) | 2017-02-24 | 2018-08-30 | Basf Se | Système de catalyseurs à base d'argent à dépressurisation réduite pour la déshydrogénation oxydative des alcools |
| EP3539657A1 (fr) | 2018-03-14 | 2019-09-18 | Basf Se | Catalyseurs améliorés comprenant des composés intermétalliques à base d'argent |
| CN116371320B (zh) * | 2023-04-18 | 2025-08-26 | 众一伍德工程有限公司 | 一种高纯度连续生产二羟甲基脲的系统及其方法 |
| CN121244122B (zh) * | 2025-12-04 | 2026-02-06 | 山东齐惠化工有限公司 | 一种甲醇钠-甲醛双液智联反应塔及生产工艺 |
-
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 BE BE161453A patent/BE835105A/fr not_active IP Right Cessation
- 1975-10-31 JP JP13056975A patent/JPS5170727A/ja active Pending
- 1975-10-31 FR FR7533432A patent/FR2289537A1/fr active Granted
- 1975-10-31 NL NL7512814A patent/NL7512814A/xx not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Cited By (2)
| 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 |
| EP0083427A1 (fr) * | 1981-12-31 | 1983-07-13 | BASF Aktiengesellschaft | Procédé pour la préparation de solutions concentrées, aqueuses du formaldéhyde et de l'urée |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2289537B1 (fr) | 1979-07-06 |
| DE2451990C3 (de) | 1981-04-09 |
| NL7512814A (nl) | 1976-05-04 |
| IT1044595B (it) | 1980-03-31 |
| DE2451990A1 (de) | 1976-05-13 |
| GB1517366A (en) | 1978-07-12 |
| BE835105A (fr) | 1976-04-30 |
| JPS5170727A (en) | 1976-06-18 |
| DE2451990B2 (de) | 1980-07-31 |
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