Claims
- 1. A continuous process for preparing a di-alkyl carbonate via oxidative carbonylation by reacting the corresponding lower alkanol with carbon monoxide and oxygen in the presence of a catalyst system consisting essentially of a copper alkoxy-halide and a quantity of water such that the mole ratio of the water to the copper salt is between 0.5 and 1.0.
- 2. The process of claim 1, wherein the lower alkanol is of formula ROX in which R is methyl, ethyl, propyl or isopropyl, and the copper alkoxy-halide is of formula Cu(OR)X in which R is as heretofore defined and X is a halogen atom.
- 3. The process of claim 2, wherein R is methyl.
- 4. The process of claim 2 or 3, wherein X is a bromine or chlorine atom.
- 5. The process of claim 4, wherein X is a chlorine atom.
- 6. The process of claim 1, wherein the copper alkoxy-halide is used in a weight quantity of between 10 and 50 parts per 100 parts of alkanol.
- 7. The process of claim 6, wherein the copper alkoxy-halide is used in a weight quantity of between 20 and 30 parts per 100 parts of alkanol.
- 8. The process of claim 1, wherein the reaction is effected at a temperature of between 50.degree. and 200.degree. C. and a pressure of between 1 and 100 atmospheres.
- 9. The process of claim 8, wherein the reaction is effected at a temperature of between 70.degree. and 150.degree. C. and a pressure of between 10 and 100 atmospheres.
Priority Claims (1)
Number |
Date |
Country |
Kind |
22355 A/88 |
Oct 1988 |
ITX |
|
Parent Case Info
This application is a continuation of Ser. No. 07/420,060, filed Oct. 11, 1989, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4360477 |
Hallgren et al. |
Nov 1982 |
|
4761467 |
Bhattacharya |
Aug 1988 |
|
4785130 |
Bhattacharya |
Nov 1988 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
420060 |
Oct 1989 |
|