BE784245A - Procede de preparation de mono-et polyisocyanates organiques a partir d'urees trisubstituees - Google Patents
Procede de preparation de mono-et polyisocyanates organiques a partir d'urees trisubstitueesInfo
- Publication number
- BE784245A BE784245A BE784245A BE784245A BE784245A BE 784245 A BE784245 A BE 784245A BE 784245 A BE784245 A BE 784245A BE 784245 A BE784245 A BE 784245A BE 784245 A BE784245 A BE 784245A
- Authority
- BE
- Belgium
- Prior art keywords
- polyisocyanates
- preparation
- organic mono
- trisubstituted urea
- trisubstituted
- Prior art date
Links
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 |
|---|---|---|---|
| GB1831471A GB1359032A (en) | 1971-06-01 | 1971-06-01 | Process for preparing organic mono-and polyisocyanates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE784245A true BE784245A (fr) | 1972-09-13 |
Family
ID=10110366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE784245A BE784245A (fr) | 1971-06-01 | 1972-05-31 | Procede de preparation de mono-et polyisocyanates organiques a partir d'urees trisubstituees |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3898259A (fr) |
| JP (1) | JPS565221B1 (fr) |
| BE (1) | BE784245A (fr) |
| BR (1) | BR7203496D0 (fr) |
| CH (1) | CH568278A5 (fr) |
| DD (1) | DD99361A5 (fr) |
| DE (1) | DE2225365B2 (fr) |
| ES (1) | ES403375A1 (fr) |
| FR (1) | FR2139577A5 (fr) |
| GB (1) | GB1359032A (fr) |
| IL (1) | IL39578A0 (fr) |
| IT (1) | IT956102B (fr) |
| NL (1) | NL7207352A (fr) |
| SU (1) | SU436489A3 (fr) |
| ZA (1) | ZA723716B (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2746963A1 (de) * | 1977-10-19 | 1979-04-26 | Bayer Ag | Verfahren zur herstellung von isocyanaten |
| 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 |
| 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 |
| JPH03173859A (ja) * | 1989-04-06 | 1991-07-29 | Arco Chem Technol Inc | 芳香族アミンからの芳香族モノーおよびポリイソシアネートの製造方法 |
| EP0402020A1 (fr) * | 1989-06-05 | 1990-12-12 | Arco Chemical Technology, Inc. | Procédé intégré pour la préparation de diisocyanates méthylène diphénylène et de polyisocyanates polyméthylène polyphénylène à partir d'amines et de polyamines |
| US5227483A (en) * | 1991-12-30 | 1993-07-13 | Arco Chemical Technology, L.P. | Process for recovery of amines and volatile acids from amine salts |
| DE4233534A1 (de) * | 1992-10-06 | 1994-04-07 | Chemie Linz Deutschland | Verfahren zur Herstellung von Isocyanaten durch Zersetzen von N,N,N'-trisubstituierten Harnstoffen |
| CN103596920A (zh) * | 2011-05-30 | 2014-02-19 | 巴斯夫欧洲公司 | 制备多异氰酸酯的方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773086A (en) * | 1953-01-19 | 1956-12-04 | Monsanto Chemicals | Production of isocyanates from substituted ureas |
-
1971
- 1971-06-01 GB GB1831471A patent/GB1359032A/en not_active Expired
-
1972
- 1972-05-25 DE DE2225365A patent/DE2225365B2/de not_active Withdrawn
- 1972-05-26 FR FR7218834A patent/FR2139577A5/fr not_active Expired
- 1972-05-30 DD DD163307A patent/DD99361A5/xx unknown
- 1972-05-30 ZA ZA723716A patent/ZA723716B/xx unknown
- 1972-05-31 US US258308A patent/US3898259A/en not_active Expired - Lifetime
- 1972-05-31 JP JP5421572A patent/JPS565221B1/ja active Pending
- 1972-05-31 NL NL7207352A patent/NL7207352A/xx unknown
- 1972-05-31 SU SU1791533A patent/SU436489A3/ru active
- 1972-05-31 ES ES403375A patent/ES403375A1/es not_active Expired
- 1972-05-31 IL IL39578A patent/IL39578A0/xx unknown
- 1972-05-31 CH CH808372A patent/CH568278A5/xx not_active IP Right Cessation
- 1972-05-31 BE BE784245A patent/BE784245A/fr unknown
- 1972-05-31 IT IT25195/72A patent/IT956102B/it active
- 1972-05-31 BR BR3496/72A patent/BR7203496D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2225365B2 (de) | 1980-11-13 |
| SU436489A3 (ru) | 1974-07-15 |
| IT956102B (it) | 1973-10-10 |
| IL39578A0 (en) | 1972-07-26 |
| CH568278A5 (fr) | 1975-10-31 |
| DE2225365A1 (de) | 1973-01-25 |
| NL7207352A (fr) | 1972-12-05 |
| DD99361A5 (fr) | 1973-08-05 |
| GB1359032A (en) | 1974-07-03 |
| ES403375A1 (es) | 1975-04-16 |
| ZA723716B (en) | 1973-03-28 |
| FR2139577A5 (fr) | 1973-01-05 |
| JPS565221B1 (fr) | 1981-02-04 |
| BR7203496D0 (pt) | 1973-05-10 |
| US3898259A (en) | 1975-08-05 |
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