Appeal No. 2001-2396
Application 09/286,150
has one fewer fluorine atom than the starting material.
Kellner discloses a comparative example wherein the
appellants’ starting material, CF CCl CF , is reacted with3 2 3
hydrogen at 150ºC using a palladium catalyst supported on acid
washed carbon to produce a product containing 12.3% of the
appellants’ product, 2-hydropentafluoropropene (col. 5, lines 48-
63). When this example was repeated at a higher hydrogen flow
rate, the product contained 19.8% 1,2,2-trihydropentafluoro-
propane and no more than a small amount of 2-hydropentafluoro-
propene (col. 5, line 64 - col. 6, line 5). Kellner states
(col. 6, lines 6-11): “This experiment illustrates that when
using palladium supported on acid washed carbon as catalyst and
where the two chlorines of the starting compound are on the
internal carbon, an olefin and/or a saturated product containing
one less fluorine than the starting compound can be produced in
significant amounts.”
Webster discloses a method for making hexafluoropropylene by
reacting an intermediate, which can be the appellants’ CF CCl CF3 2 3
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