FR1240300A - Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuse - Google Patents
Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuseInfo
- Publication number
- FR1240300A FR1240300A FR809738A FR809738A FR1240300A FR 1240300 A FR1240300 A FR 1240300A FR 809738 A FR809738 A FR 809738A FR 809738 A FR809738 A FR 809738A FR 1240300 A FR1240300 A FR 1240300A
- Authority
- FR
- France
- Prior art keywords
- formaldehyde
- concentrated
- preparation
- aqueous urea
- stable solution
- 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.)
- Expired
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
- 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
- C07C273/025—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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR809738A FR1240300A (fr) | 1959-11-10 | 1959-11-10 | Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR809738A FR1240300A (fr) | 1959-11-10 | 1959-11-10 | Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1240300A true FR1240300A (fr) | 1960-09-02 |
Family
ID=8721093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR809738A Expired FR1240300A (fr) | 1959-11-10 | 1959-11-10 | Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuse |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1240300A (fr) |
-
1959
- 1959-11-10 FR FR809738A patent/FR1240300A/fr not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| OA01009A (fr) | Préparation d'urée. | |
| CH459951A (de) | Stabile, konzentrierte Lösung eines basischen Farbstoffes | |
| CH409891A (de) | Wässerige, lagerbeständige Aktivsauerstoff enthaltende Konzentrate | |
| FR1234419A (fr) | Préparation d'urée | |
| BE580663A (fr) | Procédé de préparation de solutions aqueuses concentrées d'amide de l'acide polyacrylique. | |
| CH486887A (de) | Saures, wässriges Detergens-Jod-Konzentrat | |
| FR1240300A (fr) | Préparation d'une solution concentrée, stable, de formaldéhyde dans de l'urée aqueuse | |
| FR1197430A (fr) | Dérivés de l'acide imido-diphosphorique | |
| FR1200634A (fr) | Procédé de préparation de l'urée | |
| DK108641C (da) | Fremgangsmåde til fremstilling af lagringsbestandige opløsninger af alkalimetallactamater i lactamer. | |
| FR95268E (fr) | Solutions aqueuses stables de formaldéhyde et procédé de préparation. | |
| FR1310M (fr) | Agents thérapeutiques appartenant au groupe des anisoxyéthylamines. | |
| FR1261114A (fr) | Procédé de préparation de solutions aqueuses, stables de cyanure d'ammonium | |
| BE592478A (fr) | Procédé de préparation de solutions aqueuses, stables de cyanure d'ammonium | |
| CH511275A (de) | Stabile, konzentrierte, wässrige Lösung von basischen Oxazinfarbstoffen | |
| FR228M (fr) | Dérivés de l'acide benzoique. | |
| BR6458252D0 (pt) | Processo de preparacao de 3,3'-etilenobis (tetrahidro-4,6-dimetil-2h-1,3,5-tiadiazina-2-tiona | |
| FR1336433A (fr) | Solution aqueuse stabilisée de formaldéhyde | |
| FR1196M (fr) | Nouveaux médicaments a activité antibactérienne constitués par de nouveaux dérivés de l'acide nicotique. | |
| DK102097C (da) | Fremgangsmåde til fremstilling af klare, vandige opløsninger af narkotisk virkende, substituerede phenoxy-eddikesyreamider. | |
| BE605038A (fr) | Solutions aqueuses d'hydroxocobalamine | |
| GB912126A (en) | Sulphamoyl benzothiadiazine derivative | |
| FR1241151A (fr) | Perfectionnements au procédé de préparation de l'amino-guanidine | |
| DK101382C (da) | Fremgangsmåde til direkte fremstilling af stabile, vandige kimdræbende præparater af jod med en bærer. | |
| CH500272A (de) | Stabile, konzentrierte wässerige Lösungen von basischen Farbstoffen |