GB284272A - Improvements in the manufacture and production of methylol ureas - Google Patents
Improvements in the manufacture and production of methylol ureasInfo
- Publication number
- GB284272A GB284272A GB2601/28A GB260128A GB284272A GB 284272 A GB284272 A GB 284272A GB 2601/28 A GB2601/28 A GB 2601/28A GB 260128 A GB260128 A GB 260128A GB 284272 A GB284272 A GB 284272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- manufacture
- production
- methylol ureas
- solution
- 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
- C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C335/04—Derivatives of thiourea
- C07C335/06—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms
- C07C335/08—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms of a saturated carbon skeleton
-
- 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
- C07C273/1863—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 from urea
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
284,272. Walter, G. Nov. 28, 1925, [Convention date]. Divided on 262,148. Samples furnished. Methylol compounds of urea, thiourea, and their derivatives are obtained by reacting on urea &c. with formaldehyde or a polymer thereof in an organic solvent at ordinary or slightly elevated temperature and in the presence of a base. In an example, urea is added to a cold solution of paraformaldehyde in alcohol containing sodium hydroxide, whereupon dimethylol urea separates from the solution and is filtered off.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT284272X | 1925-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB284272A true GB284272A (en) | 1928-05-29 |
Family
ID=3670805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2601/28A Expired GB284272A (en) | 1925-11-28 | 1926-11-29 | Improvements in the manufacture and production of methylol ureas |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB284272A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103242201A (en) * | 2013-04-26 | 2013-08-14 | 中科院广州化学有限公司 | Preparation method of urea formaldehyde intermediate dimethylol urea |
-
1926
- 1926-11-29 GB GB2601/28A patent/GB284272A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103242201A (en) * | 2013-04-26 | 2013-08-14 | 中科院广州化学有限公司 | Preparation method of urea formaldehyde intermediate dimethylol urea |
CN103242201B (en) * | 2013-04-26 | 2015-06-10 | 中科院广州化学有限公司 | Preparation method of urea formaldehyde intermediate dimethylol urea |
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