Appeal No. 2001-1105
Application No. 09/312,267
Boyce discloses a liquid phase process for converting a
chlorofluoro olefin to a fluorinated aliphatic hydrocarbon (col. 1,
lines 66-67; col. 3, lines 31-36). In Example 1b(ii), 1-chloro-
3,3,3-trifluoropropene is converted to 1,1,1,3,3-pentafluoropropane
by reaction with hydrogen fluoride in the presence of an
unsupported SbCl5/TiCl4 catalyst. In this example Boyce states
that “[a]n average of 131 g (95%) of 1,1,1,3,3-pentafluoropropane
was isolated for each of 2 consecutive runs” (col. 7, lines 6-7).
The examiner argues that “Boyce et al disclose every
limitation of the instantly claimed process except for the
requirement for a catalyst support” (answer, page 4). The
examiner, however, does not point out where Boyce discloses that
the conversion of the chlorofluoro olefin to the fluorinated
aliphatic hydrocarbon can take place in the gas phase. Boyce
teaches that the first step of his process, wherein a chlorofluoro
olefin is made from a chlorinated olefinic hydrocarbon, can be
carried out in either the liquid phase or the gas phase (col. 3,
lines 13-16). The conversion of the chlorofluoro olefin to a
fluorinated aliphatic hydrocarbon, which is the reaction in example
1b(ii), is disclosed as being carried out in the liquid phase (col.
3, lines 33-36).
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