GB522644A - Improvements in or relating to the production of ethers of methylol urea - Google Patents
Improvements in or relating to the production of ethers of methylol ureaInfo
- Publication number
- GB522644A GB522644A GB36721/38A GB3672138A GB522644A GB 522644 A GB522644 A GB 522644A GB 36721/38 A GB36721/38 A GB 36721/38A GB 3672138 A GB3672138 A GB 3672138A GB 522644 A GB522644 A GB 522644A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcohol
- ethers
- per cent
- water
- dimethylolurea
- 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
- 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
- C07C273/18—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 substituted ureas
- C07C273/1854—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 substituted ureas by reactions not involving the formation of the N-C(O)-N- moiety
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
522,644. Ethers of methylolureas. DU PONT DE NEMOURS & CO., E. I. Dec. 16, 1938, No. 36721. Convention date, Dec. 17, 1937. [Class 2 (iii)] Ethers of methylolureas are manufactured by reacting a water wet methylolurea with a monohydric alcohol in the presence of an acid catalyst, and neutralizing the acid catalyst after substantial completion of the reaction. The methylolurea may contain 5-50 per cent. of water. In examples : (1) dimethylolurea containing 30 per cent. of water is warmed with isobutyl alcohol in the presence of phosphoric acid, yielding the diisobutyl ether ; (2) the isobutyl alcohol of (1) is replaced by n-butyl alcohol; (3) dimethylolurea (30 per cent. water wet) is warmed with sec. butyl alcohol in the presence of concentrated hydrochloric acid ; (4) the sec. butyl alcohol of (3) is replaced by isopropyl alcohol, and (5) by methyl alcohol; (6) monomethylolurea (8 per cent. water wet) is warmed with isobutyl alcohol in the presence of hydrochloric acid ; (7) the isobutyl alcohol of (6) is replaced by n-butyl alcohol. The aralkyl ethers, e.g. the benzyl ether, of mono- and dimethylolurea may be similarly prepared.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US522644XA | 1937-12-17 | 1937-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB522644A true GB522644A (en) | 1940-06-24 |
Family
ID=21976458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36721/38A Expired GB522644A (en) | 1937-12-17 | 1938-12-16 | Improvements in or relating to the production of ethers of methylol urea |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB522644A (en) |
-
1938
- 1938-12-16 GB GB36721/38A patent/GB522644A/en not_active Expired
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