GB614295A - Manufacture of organic polycarbamates - Google Patents
Manufacture of organic polycarbamatesInfo
- Publication number
- GB614295A GB614295A GB2087946A GB2087946A GB614295A GB 614295 A GB614295 A GB 614295A GB 2087946 A GB2087946 A GB 2087946A GB 2087946 A GB2087946 A GB 2087946A GB 614295 A GB614295 A GB 614295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- glycol
- triol
- carbamates
- moles
- 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
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Polycarbamates of the formula R(OCONH2)n, wherein R stands for an acyclic radical substituted or not and n is a whole number greater than one, are prepared by reacting n moles. of ammonia with the chloroformic esters obtained by the interaction of one or more of the compounds having the formula R(OH)n with n moles. of phosgene. The chloroformic esters may be prepared by mixing the reagents at about 30-35 DEG C., conveniently in solution in an inert organic liquid or by mixing the hydroxy compound with liquid phosgene. Ammonia may conveniently be added to the solution of the chloroformic ester, preferably at about 50-60 DEG C. Examples describe the preparation of the bis-carbamates of ethylene glycol, trimethylene glycol, 1 : 4-butane diol, hexamethylene glycol, decamethylene glycol and octadecane-1 : 12-diol and the tris-carbamates of tristearin-11 : 111 : 1111-triol (hydrogenated castor oil, triolein - 11 : 111 : 1111 - triol (castor oil) and 11-hydroxystearic-b : b 1-dihydroxy ethylamide (obtained by reacting methyl-11-hydroxy stearate with diethanolamine) by formation of the corresponding chloroformates and their treatment with ammonia. Other starting materials mentioned are glycerol, dibenzoyl-mannitol and N : N1-ethylene-bis-ricinoleamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2087946A GB614295A (en) | 1946-07-12 | 1946-07-12 | Manufacture of organic polycarbamates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2087946A GB614295A (en) | 1946-07-12 | 1946-07-12 | Manufacture of organic polycarbamates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB614295A true GB614295A (en) | 1948-12-13 |
Family
ID=10153285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2087946A Expired GB614295A (en) | 1946-07-12 | 1946-07-12 | Manufacture of organic polycarbamates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB614295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2656378A (en) * | 1952-01-04 | 1953-10-20 | Carter Prod Inc | 2, 2-diphenyl-1, 3-propanediol monocarbamate |
| US2724720A (en) * | 1953-08-03 | 1955-11-22 | Carter Prod Inc | Dicarbamates of substituted propane diols |
-
1946
- 1946-07-12 GB GB2087946A patent/GB614295A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2656378A (en) * | 1952-01-04 | 1953-10-20 | Carter Prod Inc | 2, 2-diphenyl-1, 3-propanediol monocarbamate |
| US2724720A (en) * | 1953-08-03 | 1955-11-22 | Carter Prod Inc | Dicarbamates of substituted propane diols |
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