GB521380A - A process for the manufacture of urea-formaldehyde condensation products - Google Patents
A process for the manufacture of urea-formaldehyde condensation productsInfo
- Publication number
- GB521380A GB521380A GB3347438A GB3347438A GB521380A GB 521380 A GB521380 A GB 521380A GB 3347438 A GB3347438 A GB 3347438A GB 3347438 A GB3347438 A GB 3347438A GB 521380 A GB521380 A GB 521380A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcohol
- urea
- dimethylolurea
- methyl
- alcohols
- 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
- C08G12/40—Chemically modified polycondensates
- C08G12/42—Chemically modified polycondensates by etherifying
- C08G12/421—Chemically modified polycondensates by etherifying of polycondensates based on acyclic or carbocyclic compounds
- C08G12/422—Chemically modified polycondensates by etherifying of polycondensates based on acyclic or carbocyclic compounds based on urea or thiourea
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
521,380. Urea-formaldehyde resins. BECK, KOLLER & CO. (ENGLAND), Ltd. (Hovey, A. G., Hodgins, T. S., and Bevan, E. A.). Nov. 17, 1938, No. 33474. [Class 2 (iii)] Dimethylolurea, or urea and at least 2 mols per mol of aqueous formaldehyde, and an alcohol containing not more than eight carbon atoms are boiled together at a pH of 5.5-6.5 and dehydrated under reduced pressure to give a resin having a nitrogen content between those of the mono- and di-etherification products of dimethylolurea. Dimethylolurea may be mixed with at least 2 mols of the alcohol, preferably one containing between 3 and 8 carbon atoms, the pH adjusted by phosphoric acid, the solution boiled until clear, and the mixture dehydrated under a vacuum of 100-200 mins. of mercury at 60-70‹C. Alcohols specified are methyl, ethyl, n- and iso-propyl, n-, sec- and tert-butyl, n- and sec-amyl, and n-octyl alcohols ; ethyleneglycol, glycerol, pentaerythritol, sorbitol, and mannitol; " B 23 alcohol (containsing 2 : 4-dimethyl-pentanol-1 and 2 : 4-dimethylhexanol-3) and " B 24 alcohol (containing 4-methyl-hexanol-1, 2 4-dimethyl-hexanol-1, and 4-methyl-heptanol-1). The products are solids soluble in alcohols, aromatic hydrocarbons, and to some extent in straight-chain hydrocarbons and oils, and may be used in coating compositions, e.g., with alkyd resins, castor oil, titanium dioxide, or zinc oxide. Specification 502,308 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3347438A GB521380A (en) | 1938-11-17 | 1938-11-17 | A process for the manufacture of urea-formaldehyde condensation products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3347438A GB521380A (en) | 1938-11-17 | 1938-11-17 | A process for the manufacture of urea-formaldehyde condensation products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521380A true GB521380A (en) | 1940-05-20 |
Family
ID=10353434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3347438A Expired GB521380A (en) | 1938-11-17 | 1938-11-17 | A process for the manufacture of urea-formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521380A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2486459A (en) * | 1946-01-25 | 1949-11-01 | Rohm & Haas | Urea-formaldehyde condensates having detergent properties |
| US2995541A (en) * | 1957-11-22 | 1961-08-08 | Exxon Research Engineering Co | Curing agent for urea resins |
| US3939121A (en) * | 1974-01-04 | 1976-02-17 | American Cyanamid Company | Thermosetting toluene-soluble water-insoluble alkylated urea-formaldehyde resin and process for the manufacture thereof |
| CN113072903A (en) * | 2021-04-25 | 2021-07-06 | 黑龙江大学 | Preparation method of decorative wood board waterproof adhesive |
-
1938
- 1938-11-17 GB GB3347438A patent/GB521380A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2486459A (en) * | 1946-01-25 | 1949-11-01 | Rohm & Haas | Urea-formaldehyde condensates having detergent properties |
| US2995541A (en) * | 1957-11-22 | 1961-08-08 | Exxon Research Engineering Co | Curing agent for urea resins |
| US3939121A (en) * | 1974-01-04 | 1976-02-17 | American Cyanamid Company | Thermosetting toluene-soluble water-insoluble alkylated urea-formaldehyde resin and process for the manufacture thereof |
| CN113072903A (en) * | 2021-04-25 | 2021-07-06 | 黑龙江大学 | Preparation method of decorative wood board waterproof adhesive |
| CN113072903B (en) * | 2021-04-25 | 2023-03-17 | 黑龙江大学 | Preparation method of decorative wood board waterproof adhesive |
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