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1. WO1994029250 - SAFE HANDLING OF TETRAFLUOROETHYLENE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A container of liquid mixmre of tetrafluoroethylene and carbon dioxide under pressure.
2. The container of claim 1, wherein said liquid mixmre fills less than the entire volume of said container to form a vapor space therein, said vapor space being filled with a mixmre of tetrafluoroethylene and carbon dioxide vapor vaporized from said liquid mixmre.
3. The container of claim 1, wherein said liquid mixmre contains 1 to

99 mol% of said tetrafluoroethylene and 99 to 1 mol% of said carbon dioxide.
4. The container of claim 3, wherein the proportion of carbon dioxide in said liquid mixmre is at least 20 mol%.
5. The container of claim 3, wherein the proportion of carbon dioxide in said liquid mixmre is at least 60 mol% .
6. The container of claim 2 wherein the amount of carbon dioxide in said liquid mixmre is sufficient to provide at least 30 mol% carbon dioxide in said vapor mixmre over the temperamre range of -50 to +55°C.
7. The container of claim 1 wherein its contents are at a temperamre within the range of the critical temperamre of said liquid mixmre and 55°C- 8. The container of claim 7 wherein said pressure is at least 690 KPa.
9. In the process of transporting liquid tetrafluoroethylene in a container under pressure, the improvement comprising combining liquid carbon dioxide and said liquid tetrafluoroethylene, one with the other, said carbon dioxide being present in effective amount to prevent the tetrafluoroethylene vaporized from the resultant liquid mixmre from exploding at temperatures up to +25°C.
10. In the process of claim 9, wherein the resultant vapor mixmre of carbon dioxide and tetrafluoroethylene in said container will exhibit a change in vapor pressure of less than 10% after 50 wt% of said liquid has vaporized from the container.
11. In the process of claim 9 wherein the amount of carbon dioxide present is effective to prevent the tetrafluoroethylene vaporized from the resultant liquid mixmre from exploding at temperamres up to +55°C.
12. A liquid mixmre of tetrafluoroethylene and carbon dioxide.
13. The liquid mixmre of claim 12 as an azeotrope-like composition consisting essentially of about 30 to 99 mol% carbon dioxide and 70 to 1 mol% tetrafluoroethylene, said composition having a boiling point of +25°C when the pressure is adjusted to about 4000 to 6600 KPa.

14. The liquid mixmre of claim 12 as an azeotrope consisting essentially of about 96 mol% carbon dioxide and 4 mol% tetrafluoroethylene, said composition having a boiling point of about -35°C when the pressure is adjusted to about 1205 KPa.