Process for manufacturing alkylene carbonates
AssigneeTexaco Chemical Company
InventorsEdward T. Marquis, John R. Sanderson
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Abstract
A method for the manufacture of alkylene carbonates is disclosed. Alkylene carbonates that are free of halogen contaminants are prepared by reacting alkylene oxides and carbon dioxide in the presence of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.
Claims14
A process for the manufacture of alkylene carbonates, comprising reacting an alkylene oxide having the formula:
- ##STR4## in which R and R.sup.1 are selected from the group consisting of hydrogen, alkyl groups containing from 1 to 20 carbon atoms, and alkenyl groups containing from 2 to 20 carbon atoms with (b) carbon dioxide in the presence of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.
A process for preparing alkylene carbonates, comprising reacting (a) an alkylene oxide having the formula:
- ##STR5## in which R and R.sup.1 are selected from the group consisting of hydrogen and alkyl groups containing from 1 to 5 carbon atoms with (b) a molar excess of carbon dioxide at a temperature of from about 100.degree. to about 225.degree. C. in the presence of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.
A process for preparing alkylene carbonates, comprising reacting (a) ethylene oxide or propylene oxide with (b) a molar excess of carbon dioxide, at a temperature of from about 175.degree. to about 215.degree. C. and at a pressure greater than about 300 psig, in the presence of a catalyst selected from the group consisting of cerous acetate and cerous nitrate hexahydrate.
Dependencies are inferred from the claim text.