ES462093A1 - Procedimiento para la obtencion de monoisocianatos. - Google Patents
Procedimiento para la obtencion de monoisocianatos.Info
- Publication number
- ES462093A1 ES462093A1 ES462093A ES462093A ES462093A1 ES 462093 A1 ES462093 A1 ES 462093A1 ES 462093 A ES462093 A ES 462093A ES 462093 A ES462093 A ES 462093A ES 462093 A1 ES462093 A1 ES 462093A1
- Authority
- ES
- Spain
- Prior art keywords
- monoisocyanate
- carbamic acid
- relatively low
- boiling
- low boiling
- 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
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedimiento para la obtención de monoisocianatos de fórmula R-NCO donde R significa un resto hidrocarburo alifático, en caso dado olefínicamente insaturado, en caso dado sustituido, con 1 5 átomos de carbono, a partir de los correspondientes cloruros de ácido carbámico de fórmula R-NH-COCl caracterizado porque los cloruros de ácido carbámico, en caso dado disueltos en disolventes orgánicos inertes, se mezclan con una cantidad, referido al hidrógeno cloraro ligado en el cloruro de ácido carbámico, como mínimo equivalente de un mono- o poliisocianato orgánico cuyo punto de ebullición se encuentre por encima del punto de ebullición del monoisocianato a obtener, y de la mezcla así obtenida, por calentamiento y/o aplicación de vacío, el monoisocianato se separa por destilación, en caso dado junto con el disolvente, o con una corriente de gas se expulsa en caso dado junto con el disolvente.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2639931A DE2639931C2 (de) | 1976-09-04 | 1976-09-04 | Verfahren zur Herstellung von aliphatischen Monoisocyanaten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES462093A1 true ES462093A1 (es) | 1978-06-01 |
Family
ID=5987175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES462093A Expired ES462093A1 (es) | 1976-09-04 | 1977-09-02 | Procedimiento para la obtencion de monoisocianatos. |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4231952A (es) |
| JP (1) | JPS5331625A (es) |
| BE (1) | BE858363A (es) |
| BR (1) | BR7705872A (es) |
| CH (1) | CH629181A5 (es) |
| DE (1) | DE2639931C2 (es) |
| ES (1) | ES462093A1 (es) |
| FR (1) | FR2363543A1 (es) |
| GB (1) | GB1529780A (es) |
| IT (1) | IT1091120B (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2937028A1 (de) | 1979-09-13 | 1981-04-09 | Basf Ag, 6700 Ludwigshafen | 1-monohalogenierte isocyanate und verfahren zur herstellung von gemischen von 1-monohalogenierten isocyanaten und 1,2-ungesaettigten isocyanaten |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440268A (en) * | 1965-09-15 | 1969-04-22 | Stauffer Chemical Co | Process for producing organic isocyanates |
| GB1208862A (en) * | 1966-12-05 | 1970-10-14 | Ici Ltd | Manufacture of organic isocyanates |
| US3694323A (en) * | 1968-08-05 | 1972-09-26 | Du Pont | Separation of distillable isocyanates from their phosgenation masses |
| US3644461A (en) * | 1969-02-19 | 1972-02-22 | Ott Chemical Co | Preparation of alkyl isocyanates |
| BE791298A (fr) * | 1971-11-16 | 1973-05-14 | Basf Ag | Procede de preparation d'isocyanates |
| DE2210285C3 (de) * | 1972-03-03 | 1981-09-24 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von Isocyanaten |
| DE2411441A1 (de) * | 1974-03-11 | 1975-10-02 | Basf Ag | Verfahren zur herstellung von alkylisocyanaten |
| DE2503270C2 (de) * | 1975-01-28 | 1983-06-09 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von aliphatischen Isocyanaten |
-
1976
- 1976-09-04 DE DE2639931A patent/DE2639931C2/de not_active Expired
-
1977
- 1977-08-26 US US05/827,913 patent/US4231952A/en not_active Expired - Lifetime
- 1977-08-30 CH CH1058177A patent/CH629181A5/de not_active IP Right Cessation
- 1977-09-01 GB GB36520/77A patent/GB1529780A/en not_active Expired
- 1977-09-02 BR BR7705872A patent/BR7705872A/pt unknown
- 1977-09-02 BE BE180644A patent/BE858363A/xx not_active IP Right Cessation
- 1977-09-02 FR FR7726730A patent/FR2363543A1/fr active Granted
- 1977-09-02 IT IT50872/77A patent/IT1091120B/it active
- 1977-09-02 ES ES462093A patent/ES462093A1/es not_active Expired
- 1977-09-03 JP JP10540277A patent/JPS5331625A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117814B2 (es) | 1986-05-09 |
| JPS5331625A (en) | 1978-03-25 |
| CH629181A5 (de) | 1982-04-15 |
| DE2639931C2 (de) | 1984-12-13 |
| BR7705872A (pt) | 1978-06-27 |
| US4231952A (en) | 1980-11-04 |
| FR2363543B1 (es) | 1980-10-17 |
| GB1529780A (en) | 1978-10-25 |
| BE858363A (fr) | 1978-03-02 |
| IT1091120B (it) | 1985-06-26 |
| DE2639931A1 (de) | 1978-03-09 |
| FR2363543A1 (fr) | 1978-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990601 |