JPS55162415A - Production of phosgene - Google Patents
Production of phosgeneInfo
- Publication number
- JPS55162415A JPS55162415A JP6949379A JP6949379A JPS55162415A JP S55162415 A JPS55162415 A JP S55162415A JP 6949379 A JP6949379 A JP 6949379A JP 6949379 A JP6949379 A JP 6949379A JP S55162415 A JPS55162415 A JP S55162415A
- Authority
- JP
- Japan
- Prior art keywords
- cocl
- liq
- reaction
- gaseous
- residue
- 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
Abstract
PURPOSE: To produce phosgene in a high yield by reacting CO and Cl2 in chlorobenzenes in the presence of triphenylphosphine oxide and/or triphenylphosphine dichloride as catalyst.
CONSTITUTION: In the presence of the above-mentioned catalyst Cl2 is dissolved in chlorobenzene and/or dichlorobenzene, and by blowing gaseous CO into the soln. COCl2 is formed quantitatively. CO is preferably used in excess of Cl2, and the reaction temp. is usually 0W200°C. The liq. reaction product is taken out of the CO atmosphere, and gaseous COCl2 is separated from the liq. product by making the pressure lower than the reaction pressure or other method. The COCl2-free liq. residue is recycled to the reaction of CO and Cl2, and repeated use of this liq. residue results in little lowering in COCl2 yield.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6949379A JPS55162415A (en) | 1979-06-05 | 1979-06-05 | Production of phosgene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6949379A JPS55162415A (en) | 1979-06-05 | 1979-06-05 | Production of phosgene |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55162415A true JPS55162415A (en) | 1980-12-17 |
JPS6129886B2 JPS6129886B2 (en) | 1986-07-10 |
Family
ID=13404284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6949379A Granted JPS55162415A (en) | 1979-06-05 | 1979-06-05 | Production of phosgene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55162415A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5693853A (en) * | 1994-11-15 | 1997-12-02 | Chematur Engineering Ab | Phosgenation method |
-
1979
- 1979-06-05 JP JP6949379A patent/JPS55162415A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5693853A (en) * | 1994-11-15 | 1997-12-02 | Chematur Engineering Ab | Phosgenation method |
Also Published As
Publication number | Publication date |
---|---|
JPS6129886B2 (en) | 1986-07-10 |
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