ES483389A1 - Procedimiento para la preparacion de monoisocianatos o poli-isocianatos organicos - Google Patents
Procedimiento para la preparacion de monoisocianatos o poli-isocianatos organicosInfo
- Publication number
- ES483389A1 ES483389A1 ES483389A ES483389A ES483389A1 ES 483389 A1 ES483389 A1 ES 483389A1 ES 483389 A ES483389 A ES 483389A ES 483389 A ES483389 A ES 483389A ES 483389 A1 ES483389 A1 ES 483389A1
- Authority
- ES
- Spain
- Prior art keywords
- polyisocyanates
- preparation
- organic mono
- hydrogen chloride
- chloride adduct
- 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
- C07C263/06—Preparation of derivatives of isocyanic acid from or via ureas
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedimiento para la preparación de monoisocianatos o poliisocianatos orgánicos, de la fórmula general R(NCO)n, en la que R significa un radical alifático, cicloalifático, aromático o heterocíclico, eventualmente substituido, y n significa un número entero de 1 a 3, mediante descomposición térmica de una urea trisubstituida de la fórmula general R(NHCONR''R")n, en la que R'' y R" significan radicales hidrocarbonados alifáticos, de 1 a 4 átomos de carbono, iguales o diferentes, eventualmente substituídos, caracterizado porque se parte de un aducto con cloruro de hidrógeno de la urea trisubstituida, el cual contiene por lo menos la cantidad estequiométrica y, como máximo, 10% en moles, de cloruro de hidrógeno en exceso, y porque se realiza la descomposición térmica en masa fundida o en presencia de un disolvente orgánico inerte, en un sistema cerrado, a una temperatura de 80 a 180ºC.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2837341A DE2837341C2 (de) | 1978-08-26 | 1978-08-26 | Verfahren zur Herstellung von organischen Mono- und Polyisocyanaten durch thermische Spaltung der Hydrochloride trisubstituierter Harnstoffe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES483389A1 true ES483389A1 (es) | 1980-04-16 |
Family
ID=6047992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES483389A Expired ES483389A1 (es) | 1978-08-26 | 1979-08-14 | Procedimiento para la preparacion de monoisocianatos o poli-isocianatos organicos |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US4223145A (es) |
| JP (1) | JPS5533480A (es) |
| AT (1) | AT362773B (es) |
| AU (1) | AU523314B2 (es) |
| BE (1) | BE878409A (es) |
| BR (1) | BR7905159A (es) |
| CA (1) | CA1116621A (es) |
| DD (1) | DD145632A5 (es) |
| DE (1) | DE2837341C2 (es) |
| ES (1) | ES483389A1 (es) |
| FR (1) | FR2434144A1 (es) |
| GB (1) | GB2029413B (es) |
| IT (1) | IT1119804B (es) |
| NL (1) | NL7906291A (es) |
| SE (1) | SE7907068L (es) |
| ZA (1) | ZA793327B (es) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58179292A (ja) * | 1982-04-13 | 1983-10-20 | Nippon Synthetic Chem Ind Co Ltd:The | 炭化水素系液状混合物の安定化法 |
| GB8300016D0 (en) * | 1983-01-04 | 1983-02-09 | Exxon Research Engineering Co | Middle distillate compositions |
| GB8618397D0 (en) * | 1986-07-29 | 1986-09-03 | Exxon Chemical Patents Inc | Liquid fuel compositions |
| 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 (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 |
| DE10021742A1 (de) * | 2000-05-04 | 2001-11-08 | Bayer Ag | Verfahren zur Herstellung organischer Monoisocyanate |
| EP2042485A1 (en) * | 2007-09-28 | 2009-04-01 | Huntsman International Llc | Process for fractionating a mixture of polyisocyanates |
| WO2012176631A1 (ja) * | 2011-06-24 | 2012-12-27 | 昭和電工株式会社 | エチレン性不飽和基含有イソシアネート化合物の製造方法 |
| CN103351312A (zh) * | 2013-07-01 | 2013-10-16 | 太仓市恒益医药化工原料厂 | 一种用于苯二异氰酸酯的制备工艺 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773086A (en) * | 1953-01-19 | 1956-12-04 | Monsanto Chemicals | Production of isocyanates from substituted ureas |
| FR1473821A (fr) * | 1963-07-05 | 1967-03-24 | Carbochimique Et Inst Francais | Nouveaux procédé de fabrication d'esters isocyaniques |
| GB1359032A (en) * | 1971-06-01 | 1974-07-03 | Quimco Gmbh | Process for preparing organic mono-and polyisocyanates |
| JPS4964421A (es) * | 1972-10-20 | 1974-06-21 | ||
| US3936484A (en) * | 1974-09-25 | 1976-02-03 | Atlantic Richfield Company | Production of isocyanates from substituted ureas |
-
1978
- 1978-08-26 DE DE2837341A patent/DE2837341C2/de not_active Expired
-
1979
- 1979-06-29 FR FR7916847A patent/FR2434144A1/fr active Granted
- 1979-07-04 ZA ZA793327A patent/ZA793327B/xx unknown
- 1979-07-05 AU AU48677/79A patent/AU523314B2/en not_active Expired - Fee Related
- 1979-07-10 AT AT0481279A patent/AT362773B/de active
- 1979-07-26 IT IT49869/79A patent/IT1119804B/it active
- 1979-08-01 US US06/062,900 patent/US4223145A/en not_active Expired - Lifetime
- 1979-08-10 BR BR7905159A patent/BR7905159A/pt unknown
- 1979-08-14 ES ES483389A patent/ES483389A1/es not_active Expired
- 1979-08-20 NL NL7906291A patent/NL7906291A/nl not_active Application Discontinuation
- 1979-08-22 CA CA000334276A patent/CA1116621A/en not_active Expired
- 1979-08-23 DD DD79215154A patent/DD145632A5/de unknown
- 1979-08-24 JP JP10731679A patent/JPS5533480A/ja active Granted
- 1979-08-24 SE SE7907068A patent/SE7907068L/xx not_active Application Discontinuation
- 1979-08-24 GB GB7929568A patent/GB2029413B/en not_active Expired
- 1979-08-24 BE BE0/196864A patent/BE878409A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT7949869A0 (it) | 1979-07-26 |
| AT362773B (de) | 1981-06-10 |
| DE2837341C2 (de) | 1983-02-17 |
| SE7907068L (sv) | 1980-02-27 |
| NL7906291A (nl) | 1980-02-28 |
| US4223145A (en) | 1980-09-16 |
| AU523314B2 (en) | 1982-07-22 |
| BE878409A (fr) | 1979-12-17 |
| FR2434144B1 (es) | 1984-10-05 |
| JPS5533480A (en) | 1980-03-08 |
| GB2029413B (en) | 1982-11-03 |
| ATA481279A (de) | 1980-11-15 |
| ZA793327B (en) | 1980-07-30 |
| JPS6320218B2 (es) | 1988-04-26 |
| DE2837341A1 (de) | 1980-03-20 |
| GB2029413A (en) | 1980-03-19 |
| FR2434144A1 (fr) | 1980-03-21 |
| IT1119804B (it) | 1986-03-10 |
| BR7905159A (pt) | 1980-05-06 |
| CA1116621A (en) | 1982-01-19 |
| AU4867779A (en) | 1980-03-06 |
| DD145632A5 (de) | 1980-12-24 |
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