JPS5310047B2 - - Google Patents
Info
- Publication number
- JPS5310047B2 JPS5310047B2 JP8233775A JP8233775A JPS5310047B2 JP S5310047 B2 JPS5310047 B2 JP S5310047B2 JP 8233775 A JP8233775 A JP 8233775A JP 8233775 A JP8233775 A JP 8233775A JP S5310047 B2 JPS5310047 B2 JP S5310047B2
- Authority
- JP
- Japan
- Prior art keywords
- isocyanate
- amine
- urea
- substituted
- isocyanates
- 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
- 239000012948 isocyanate Substances 0.000 abstract 4
- 150000002513 isocyanates Chemical class 0.000 abstract 4
- 150000001412 amines Chemical class 0.000 abstract 3
- 235000013877 carbamide Nutrition 0.000 abstract 3
- 239000004202 carbamide Substances 0.000 abstract 2
- 150000003672 ureas Chemical class 0.000 abstract 2
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical class N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000012442 inert solvent Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005215 recombination Methods 0.000 abstract 1
- 230000006798 recombination Effects 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/06—Preparation of derivatives of isocyanic acid from or via ureas
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/508,972 US3936484A (en) | 1974-09-25 | 1974-09-25 | Production of isocyanates from substituted ureas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5139628A JPS5139628A (en) | 1976-04-02 |
| JPS5310047B2 true JPS5310047B2 (en, 2012) | 1978-04-11 |
Family
ID=24024815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50082337A Granted JPS5139628A (en) | 1974-09-25 | 1975-07-03 | Chikannyosokara isoshianeetono seiho |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3936484A (en, 2012) |
| JP (1) | JPS5139628A (en, 2012) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2375197A1 (fr) * | 1976-12-27 | 1978-07-21 | Philagro Sa | Procede de fabrication d'isocyanates aliphatiques |
| US4141913A (en) * | 1978-01-23 | 1979-02-27 | American Carbonyl, Inc. | Method of generating lower alkyl and cycloalkyl isocyanates |
| DE2837341C2 (de) * | 1978-08-26 | 1983-02-17 | Akzo Gmbh, 5600 Wuppertal | Verfahren zur Herstellung von organischen Mono- und Polyisocyanaten durch thermische Spaltung der Hydrochloride trisubstituierter Harnstoffe |
| US4487713A (en) * | 1981-06-26 | 1984-12-11 | Exxon Research & Engineering Co. | Production of isocyanates from esters of aromatic carbamic acids (urethanes) |
| US4871871A (en) * | 1988-11-03 | 1989-10-03 | Arco Chemical Technology, Inc. | Process for the preparation of aromatic mono- and polyisocyanates |
| US4873364A (en) * | 1988-12-09 | 1989-10-10 | Arco Chemical Technology, Inc. | Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates) |
| US4883908A (en) * | 1989-02-02 | 1989-11-28 | Arco Chemical Technology, Inc. | Process for the preparation of aromatic isocyanates from dialkyl ureas using an organic sulfonic acid promoter |
| US4978779A (en) * | 1989-03-09 | 1990-12-18 | Arco Chemical Technology, Inc. | Preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (isocyanates) using an organic sulfonic acid promoter |
| EP0402020A1 (en) * | 1989-06-05 | 1990-12-12 | Arco Chemical Technology, Inc. | An integrated process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (isocyanates) from diamines and polyamines |
| US5206412A (en) * | 1992-02-07 | 1993-04-27 | Arco Chemical Technology, L.P. | Selective process for the preparation of diphenylmethane diisocyanate precursors |
| AT398762B (de) * | 1992-08-13 | 1995-01-25 | Chemie Linz Gmbh | Verfahren zur herstellung von isocyanaten durch zersetzung von n,n,n'-trisubstituierten harnstoffen |
| AT398749B (de) * | 1992-08-13 | 1995-01-25 | Chemie Linz Gmbh | Verfahren zur herstellung von isocyansäure durch zersetzen von n,n-disubstituierten harnstoffen |
| EP1780213A1 (en) | 2005-10-27 | 2007-05-02 | 3M Innovative Properties Company | Silicon-urea-azolides, their preparation and use in the preparation of silicones with isocyanate terminal groups |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1473821A (fr) * | 1963-07-05 | 1967-03-24 | Carbochimique Et Inst Francais | Nouveaux procédé de fabrication d'esters isocyaniques |
-
1974
- 1974-09-25 US US05/508,972 patent/US3936484A/en not_active Expired - Lifetime
-
1975
- 1975-07-03 JP JP50082337A patent/JPS5139628A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5139628A (en) | 1976-04-02 |
| US3936484A (en) | 1976-02-03 |
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