FR1214996A - Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde - Google Patents
Perfectionnements relatifs aux solutions concentrées urée-formaldéhydeInfo
- Publication number
- FR1214996A FR1214996A FR777686A FR777686A FR1214996A FR 1214996 A FR1214996 A FR 1214996A FR 777686 A FR777686 A FR 777686A FR 777686 A FR777686 A FR 777686A FR 1214996 A FR1214996 A FR 1214996A
- Authority
- FR
- France
- Prior art keywords
- improvements relating
- formaldehyde solutions
- concentrated urea
- urea
- 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.)
- Expired
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
- 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)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1214996X | 1957-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1214996A true FR1214996A (fr) | 1960-04-13 |
Family
ID=11433509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR777686A Expired FR1214996A (fr) | 1957-10-30 | 1958-10-28 | Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1214996A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1189539B (de) * | 1962-07-17 | 1965-03-25 | Stamicarbon | Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Melaminharze geeigneten konzentrierten Formaldehydloesung |
DE1189538B (de) * | 1962-06-08 | 1965-03-25 | Stamicarbon | Verfahren zur Herstellung einer konzentrierten Formaldehydloesung durch mehrstufige Absorption |
DE1192636B (de) * | 1962-09-25 | 1965-05-13 | Stamicarbon | Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Phenolharze geeigneten konzentrierten Formaldehydloesung |
-
1958
- 1958-10-28 FR FR777686A patent/FR1214996A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1189538B (de) * | 1962-06-08 | 1965-03-25 | Stamicarbon | Verfahren zur Herstellung einer konzentrierten Formaldehydloesung durch mehrstufige Absorption |
DE1189539B (de) * | 1962-07-17 | 1965-03-25 | Stamicarbon | Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Melaminharze geeigneten konzentrierten Formaldehydloesung |
DE1192636B (de) * | 1962-09-25 | 1965-05-13 | Stamicarbon | Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Phenolharze geeigneten konzentrierten Formaldehydloesung |
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