Production and use of octafluoropropane

Details Production and use of octafluoropropane Production and use of octafluoropropane

2006-09-05

2006-09-05

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C510S117000, C216S058000

Reexamination Certificate

active

07102039

ABSTRACT:
Octafluoropropane is produced by a process including a step (1) of reacting hexafluoropropene with hydrogen fluoride in a gas phase at a temperature of from 150 to 450° C. in the presence of a fluorination catalyst to obtain 2H-heptafluoropropane and a step (2) of reacting 2H-heptafluoropropane obtained in step (1) with fluorine gas in a gas phase at a temperature of from 250 to 500° C. in the absence of a catalyst to obtain octafluoropropane. High-purity octafluoropropane is obtained which can be used in a process for producing a semiconductor device.

REFERENCES:
patent: 4158023 (1979-06-01), Von Halasz
patent: 1161952 (1997-10-01), None
patent: 0 612 709 (1995-12-01), None
patent: 2311522 (1997-10-01), None
patent: WO 99/06342 (1999-02-01), None
Korean Office Action dated Aug. 30, 2004.

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