Process for the preparation of perfluorocarbons
First Claim
1. Process for the preparation of perfluorocarbon containing at least two carbon atoms, comprisingfeeding fluorine-containing compound having a molecular weight greater than 20 and gaseous CO to a reaction zone wherein the fluorine-containing compound is split apart to liberate fluorine from said fluorine-containing compound and obtaining a gaseous reaction mixture which contains said fluorine and said CO,reacting said reaction mixture with carbon at a temperature of at least 1500°
- C. to obtain a gaseous reaction product,rapidly cooling said gaseous reaction product to obtain said perfluorocarbon as a result thereof, andrecovering said perfluorocarbon from said gaseous reaction product.
4 Assignments
0 Petitions
Accused Products
Abstract
Tetrafluoroethylene and other valuable 2-carbon atom fluorocarbon is made by reacting fluorine-containing compound such metal fluoride with CO in an energized state, e.g. plasma excitation, to form a gaseous reaction mixture which is a precursor to COF2, followed by reacting this reaction mixture with carbon and quenching to obtain the desired fluorocarbon.
-
Citations
36 Claims
-
1. Process for the preparation of perfluorocarbon containing at least two carbon atoms, comprising
feeding fluorine-containing compound having a molecular weight greater than 20 and gaseous CO to a reaction zone wherein the fluorine-containing compound is split apart to liberate fluorine from said fluorine-containing compound and obtaining a gaseous reaction mixture which contains said fluorine and said CO, reacting said reaction mixture with carbon at a temperature of at least 1500° - C. to obtain a gaseous reaction product,
rapidly cooling said gaseous reaction product to obtain said perfluorocarbon as a result thereof, and recovering said perfluorocarbon from said gaseous reaction product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 34, 35, 36)
- C. to obtain a gaseous reaction product,
- 25. Process comprising contacting and reacting fluorine-containing compound with CO to form a gaseous reaction mixture which is capable of being quenched to form COF2 and contacting and reacting said gaseous reaction mixture with carbon to form a second gaseous reaction mixture which is capable of being quenched to form perfluorocarbon which contains at least 2 carbon atoms and quenching said second gaseous reaction mixture.
-
29. Process of reacting metal fluoride and CO by plasma excitation to form a gaseous reaction mixture which is capable of being quenched to COF2 and reacting at least a portion of said gaseous mixture with carbon at a temperature of at least 1500°
- C. to form a second gaseous mixture which is capable of being quenched to form perfluorocarbon containing at least 2 carbon atoms and quenching said second gaseous reaction mixture.
- View Dependent Claims (31, 32, 33)
Specification