DE3764995D1 - Verwendung von wasser bei der katalytischen umwandlung von formamiden in isocyanate. - Google Patents
Verwendung von wasser bei der katalytischen umwandlung von formamiden in isocyanate.Info
- Publication number
- DE3764995D1 DE3764995D1 DE8787303329T DE3764995T DE3764995D1 DE 3764995 D1 DE3764995 D1 DE 3764995D1 DE 8787303329 T DE8787303329 T DE 8787303329T DE 3764995 T DE3764995 T DE 3764995T DE 3764995 D1 DE3764995 D1 DE 3764995D1
- Authority
- DE
- Germany
- Prior art keywords
- water
- formamids
- isocyanate
- catalytic conversion
- formamides
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/12—Preparation of derivatives of isocyanic acid from or via nitrogen analogues of carboxylic acids, e.g. from hydroxamic acids, involving a Hofmann, Curtius or Lossen-type rearrangement
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C265/00—Derivatives of isocyanic acid
- C07C265/02—Derivatives of isocyanic acid having isocyanate groups bound to acyclic carbon atoms
- C07C265/04—Derivatives of isocyanic acid having isocyanate groups bound to acyclic carbon atoms of a saturated carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Image Analysis (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/852,707 US4683329A (en) | 1986-04-16 | 1986-04-16 | Beneficial use of water in catalytic conversion of formamides to isocyanates |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3764995D1 true DE3764995D1 (de) | 1990-10-25 |
Family
ID=25314036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787303329T Expired - Lifetime DE3764995D1 (de) | 1986-04-16 | 1987-04-15 | Verwendung von wasser bei der katalytischen umwandlung von formamiden in isocyanate. |
Country Status (11)
Country | Link |
---|---|
US (1) | US4683329A (de) |
EP (1) | EP0242203B1 (de) |
JP (1) | JPS62255463A (de) |
KR (1) | KR870009986A (de) |
AT (1) | ATE56700T1 (de) |
BR (1) | BR8701796A (de) |
DE (1) | DE3764995D1 (de) |
IL (1) | IL82204A0 (de) |
IN (1) | IN167822B (de) |
PT (1) | PT84689B (de) |
SU (1) | SU1586510A3 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795830A (en) * | 1986-09-02 | 1989-01-03 | E. I. Du Pont De Nemours And Company | Use of water to inhibit decomposition of monoalkylformamides |
US5162575A (en) * | 1991-04-01 | 1992-11-10 | Olin Corporation | Preparation of isocyanates using a silver salt promoted rearrangement |
US5155267A (en) * | 1991-10-24 | 1992-10-13 | Arco Chemical Technology, L.P. | Synthesis of isocyanate precursors from primary formamides |
US8316660B2 (en) * | 2005-11-16 | 2012-11-27 | Technologies Holdings Corp. | Defrost bypass dehumidifier |
US10227568B2 (en) | 2011-03-22 | 2019-03-12 | Nanofiber Solutions, Llc | Fiber scaffolds for use in esophageal prostheses |
US10239262B2 (en) | 2011-11-21 | 2019-03-26 | Nanofiber Solutions, Llc | Fiber scaffolds for use in tracheal prostheses |
WO2013106822A1 (en) | 2012-01-12 | 2013-07-18 | Johnson Jed K | Nanofiber scaffolds for biological structures |
WO2017079328A1 (en) | 2015-11-02 | 2017-05-11 | Nanofiber Solutions, Inc. | Electrospun fibers having contrast agents and methods of making the same |
US10898608B2 (en) | 2017-02-02 | 2021-01-26 | Nanofiber Solutions, Llc | Methods of improving bone-soft tissue healing using electrospun fibers |
ES2974887T3 (es) | 2017-04-05 | 2024-07-02 | Basf Se | Catalizadores heterogéneos para la carbonilación directa de compuestos nitroaromáticos a isocianatos |
CN117561235A (zh) | 2021-06-28 | 2024-02-13 | 马克斯-普朗克科学促进学会 | 游离异氰酸酯的催化合成 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960914A (en) * | 1975-05-06 | 1976-06-01 | Sun Ventures, Inc. | Conversion of formamides to isocyanates |
US4207251A (en) * | 1977-08-02 | 1980-06-10 | Akzona Incorporated | Catalytic oxidation of formamides to form isocyanates |
DE3229323A1 (de) * | 1982-08-06 | 1984-02-09 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung aliphatischer isocyanate durch oxidative dehydrierung von formamiden |
US4537726A (en) * | 1984-11-09 | 1985-08-27 | E. I. Du Pont De Nemours And Company | Multi-stage process with adiabatic reactors for the preparation of isocyanates |
-
1986
- 1986-04-16 US US06/852,707 patent/US4683329A/en not_active Expired - Fee Related
-
1987
- 1987-04-10 SU SU874202326A patent/SU1586510A3/ru active
- 1987-04-10 IN IN290/CAL/87A patent/IN167822B/en unknown
- 1987-04-13 IL IL82204A patent/IL82204A0/xx unknown
- 1987-04-14 BR BR8701796A patent/BR8701796A/pt unknown
- 1987-04-15 DE DE8787303329T patent/DE3764995D1/de not_active Expired - Lifetime
- 1987-04-15 AT AT87303329T patent/ATE56700T1/de not_active IP Right Cessation
- 1987-04-15 EP EP87303329A patent/EP0242203B1/de not_active Expired - Lifetime
- 1987-04-15 KR KR870003607A patent/KR870009986A/ko not_active Application Discontinuation
- 1987-04-15 PT PT84689A patent/PT84689B/pt not_active IP Right Cessation
- 1987-04-15 JP JP62092932A patent/JPS62255463A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
PT84689B (pt) | 1989-11-30 |
KR870009986A (ko) | 1987-11-30 |
BR8701796A (pt) | 1988-01-26 |
IN167822B (de) | 1990-12-29 |
US4683329A (en) | 1987-07-28 |
SU1586510A3 (ru) | 1990-08-15 |
EP0242203B1 (de) | 1990-09-19 |
ATE56700T1 (de) | 1990-10-15 |
EP0242203A1 (de) | 1987-10-21 |
JPS62255463A (ja) | 1987-11-07 |
IL82204A0 (en) | 1987-10-30 |
PT84689A (en) | 1987-05-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |