Appeal No. 2001-1105
Application No. 09/312,267
THE INVENTION
The appellants’ claimed invention is directed toward a process
for making 1,1,1,3,3-pentafluoropropane. Claim 4 is illustrative:
4. A gas phase process for preparing readily recoverable
1,1,1,3,3-phentafluoropropane which comprises (a) contacting
1,1,1,-trifluoro-3-chloro-propene with hydrogen fluoride in the
presence of a supported antimony halide catalyst under conditions
sufficient to achieve at least about 95% conversion of said 1,1,1-
trifluoro-3-chloro-2-propene; and (b) recovering 1,1,1,3,3-
pentafluoropropane from the resulting reaction mixture.
THE REFERENCES
Boyce et al. (Boyce) 5,616,819 Apr. 1, 1997
Tatsuo et al. (Tatsuo)1 WO 97/24307 Jul. 10, 1997
(PCT application)
THE REJECTION
Claims 2 and 4 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Boyce in view of Tatsuo.
OPINION
We reverse the aforementioned rejection. We need to address
only claim 4, which is the sole independent claim.
1 Citations herein to Tatsuo are to the English translation
thereof which is of record.
2
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