GB683918A - Improvements in or relating to the production of melamine-formaldehyde condensation products - Google Patents
Improvements in or relating to the production of melamine-formaldehyde condensation productsInfo
- Publication number
- GB683918A GB683918A GB1435450A GB1435450A GB683918A GB 683918 A GB683918 A GB 683918A GB 1435450 A GB1435450 A GB 1435450A GB 1435450 A GB1435450 A GB 1435450A GB 683918 A GB683918 A GB 683918A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- melamine
- mols
- succinimide
- mol
- 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
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/263—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with at least two compounds covered by more than one of the groups C08G12/28 - C08G12/32
- C08G12/266—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with at least two compounds covered by more than one of the groups C08G12/28 - C08G12/32 one being melamine
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Melamine and formaldehyde are condensed under alkaline conditions and the condensation completed under acid conditions in presence of succinimide or a formaldehyde pre-condensate thereof and at least 4 mols. per mol. of melamine plus 1 mol. per mol. of succinimide of an aliphatic alcohol having 3-5 carbon atoms, the total proportion of formaldehyde and succinimide being 6.0-6.5 mols and 0.1-0.5 mols. respectively per mol. of melamine. Preferably, the melamine is condensed with formaldehyde in the first stage and the succinimide-formaldehyde condensate added at the beginning of the second stage. In example (1) 1 mol. melamine was dissolved in 6 mols. aqueous formaldehyde, the pH adjusted to 8-8.5 and the mixture boiled. 6-8 mols. of butanol and a solution obtained by boiling 0.5 mols. of succinimide with 0.5 mol. of neutral aqueous formaldehyde were then added and the pH adjusted with phosphoric acid to 5.5-6.5. Water was boiled off, butanol being condensed and returned to the mixture. The clear solution obtained could be diluted with butanol or an aromatic hydrocarbon. Example (2) is similar but all the formaldehyde is added in the first stage and succinimide itself in the second stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1435450A GB683918A (en) | 1950-06-08 | 1950-06-08 | Improvements in or relating to the production of melamine-formaldehyde condensation products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1435450A GB683918A (en) | 1950-06-08 | 1950-06-08 | Improvements in or relating to the production of melamine-formaldehyde condensation products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB683918A true GB683918A (en) | 1952-12-10 |
Family
ID=10039682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1435450A Expired GB683918A (en) | 1950-06-08 | 1950-06-08 | Improvements in or relating to the production of melamine-formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB683918A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1004185B (en) * | 1952-11-26 | 1957-03-14 | Ciba Geigy | Process for the preparation of polymerizable, amide-like compounds |
| US2808389A (en) * | 1953-08-29 | 1957-10-01 | Reichhold Chemicals Inc | Process for the production of fusible alcohol-modified melamine resins, and resulting product |
-
1950
- 1950-06-08 GB GB1435450A patent/GB683918A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1004185B (en) * | 1952-11-26 | 1957-03-14 | Ciba Geigy | Process for the preparation of polymerizable, amide-like compounds |
| US2808389A (en) * | 1953-08-29 | 1957-10-01 | Reichhold Chemicals Inc | Process for the production of fusible alcohol-modified melamine resins, and resulting product |
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