JPS56100751A - Preparation of isocyanate - Google Patents
Preparation of isocyanateInfo
- Publication number
- JPS56100751A JPS56100751A JP311180A JP311180A JPS56100751A JP S56100751 A JPS56100751 A JP S56100751A JP 311180 A JP311180 A JP 311180A JP 311180 A JP311180 A JP 311180A JP S56100751 A JPS56100751 A JP S56100751A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- shwon
- formula
- isocyanate
- catalytic layer
- 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.)
- Granted
Links
- 239000012948 isocyanate Substances 0.000 title abstract 2
- 150000002513 isocyanates Chemical class 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 abstract 3
- -1 N- monosubstituted formamide Chemical class 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052741 iridium Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To raise the selectivity and yield of the desired substance, by using a specific metal oxide as a catalyst in preparing an isocyante by oxidizing an N- monosubstituted formamide with oxygen under heating.
CONSTITUTION: An N-monosubstituted formamide shwon by the formula I (n is 1W3; R is n functional organic residue) is oxidized in the presence of a catalyst comprising oxides of one or more metals selected from the group consisting of Ru, Rd, Pd, Ir, and Pt, to give an isocyanate shwon by the formula II. The reaction temperature is 200W600°C, preferably 250W500°C. The catalyst may be supported on a carrier, e.g., silicon carbide, etc. Especially a method wherein a raw material in gas state together with oxygen is brought into contact with the catalytic layer continuously is preferable. In the method, the contacting time with the catalytic layer is about 0.05W20sec.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP311180A JPS56100751A (en) | 1980-01-17 | 1980-01-17 | Preparation of isocyanate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP311180A JPS56100751A (en) | 1980-01-17 | 1980-01-17 | Preparation of isocyanate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56100751A true JPS56100751A (en) | 1981-08-12 |
| JPS6317051B2 JPS6317051B2 (en) | 1988-04-12 |
Family
ID=11548233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP311180A Granted JPS56100751A (en) | 1980-01-17 | 1980-01-17 | Preparation of isocyanate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56100751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4698438A (en) * | 1985-04-26 | 1987-10-06 | E. I. Du Pont De Nemours And Company | Process for the preparation of methyl carbamates and thioimidates |
| US8716471B2 (en) | 2008-11-24 | 2014-05-06 | Reliance Life Sciences Pvt. Ltd. | Process for the preparation of tetrazine derivatives |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0211057U (en) * | 1988-07-04 | 1990-01-24 | ||
| JPH0245961U (en) * | 1988-09-26 | 1990-03-29 |
-
1980
- 1980-01-17 JP JP311180A patent/JPS56100751A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4698438A (en) * | 1985-04-26 | 1987-10-06 | E. I. Du Pont De Nemours And Company | Process for the preparation of methyl carbamates and thioimidates |
| US8716471B2 (en) | 2008-11-24 | 2014-05-06 | Reliance Life Sciences Pvt. Ltd. | Process for the preparation of tetrazine derivatives |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6317051B2 (en) | 1988-04-12 |
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