GB557364A - A process for the manufacture of resinous condensation products - Google Patents
A process for the manufacture of resinous condensation productsInfo
- Publication number
- GB557364A GB557364A GB6236/42A GB623642A GB557364A GB 557364 A GB557364 A GB 557364A GB 6236/42 A GB6236/42 A GB 6236/42A GB 623642 A GB623642 A GB 623642A GB 557364 A GB557364 A GB 557364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mols
- until
- condensation products
- resinous condensation
- aqueous formaldehyde
- 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)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
557,364. Resinous condensation products. BECK, KOLLER & CO. (ENGLAND), Ltd. May 8, 1942, No. 6236. Convention date, Aug. 16, 1941. [Class 2 (iii)] Hydrocarbon - soluble etherified ureaformaldehyde resinous condensation products are made by heating urea (1 mol.) with aqueous formaldehyde (2.0-2.3 mols.) at pH 8-9 in the presence of an alkaline catalyst, distilling under vacuum (30-100 mm. Hg) until 65-100 per cent. of the water originally contained in the formaldehyde solution is removed, heating the resulting mass with an excess of a monohydric alcohol in the presence of an acidic catalyst (pH 5.5-6.0), and distilling under vacuum (30 mm. Hg or more) until the resulting mass will tolerate 10-55 c.c. of straight-chain hydrocarbons for 10 gms. resin. Suitable alkaline catalysts are sodium, potassium and ammonium hydroxides, diethylamine and quaternary ammonium compounds. The acidic catalyst may be phosphoric, hydrochloric, sulphuric, formic, maleic or phthalic acid, acid esters or acid salts. Examples of monohydric alcohols are ethanol, n-propyl, n-butyl, 1-pentanol and n-octyl. In a typical example a stirred mixture of aqueous formaldehyde (10 gm.-mols.), urea (4.37 gm.-mols.) and aqueous ammonia (pH 8.5), was heated to 60‹ C. in 30 minutes and maintained at that temperature for an hour. 99 per cent. of the water in the aqueous formaldehyde was removed by distillation (75 mm. Hg.) at 60-60‹ C. The viscous mass was heated to 90‹ C. and n-butyl alcohol (10.8 gm.-mols.) and phosphoric acid added (pH 5.5). After refluxing for 15 minutes the reaction mixture was distilled at 60‹ C. (75 mm. Hg.) until the product had a mineral spirits tolerance of 22 c.c. for 10 gms. resin. It was dissolved in xylol. The solution was compatible with the usual thinners, resins and pigments. Enamels, e.g. toluidine red enamels may be prepared from the products. Specifications 522,643, 528,479 and 535,378 and U.S.A. Specification 2,201,926 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US557364XA | 1941-08-16 | 1941-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB557364A true GB557364A (en) | 1943-11-17 |
Family
ID=21999816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6236/42A Expired GB557364A (en) | 1941-08-16 | 1942-05-08 | A process for the manufacture of resinous condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB557364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3392150A (en) * | 1959-07-23 | 1968-07-09 | Herbert P.A. Groll | Etherified amino formaldehyde products |
-
1942
- 1942-05-08 GB GB6236/42A patent/GB557364A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3392150A (en) * | 1959-07-23 | 1968-07-09 | Herbert P.A. Groll | Etherified amino formaldehyde products |
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