Appeal No. 1995-4851
Application 08/167,656
chloroethane (page 1, lines 51-53; page 2, lines 28-35), which
is the product recited in appellants’ claim 1. Scipioni’s
catalyst consists essentially of a partially fluorinated
alumina activated by
impregnation with a solution of one or more polyvalent halides
selected from chromium, cobalt, nickel and manganese, wherein
the total content of polyvalent metal halide expressed as
oxide generally is not more than 15 wt% of the partially
fluorinated alumina expressed as alumina (page 3, lines 40-
49). Scipioni indicates that “partially fluorinated alumina”
is alumina which is 70-80% fluorinated, and teaches that
excessive fluorination impairs the activity of the catalyst
(page 3, lines 84-87). At one point, Scipioni discusses
“impregnating (-alumina with a solution of one or more halides
of polyvalent metals such as chromium, cobalt, nickel,
manganese” (page 3, lines 52-54, emphasis added), but in other
portions, he limits the polyvalent metals to chromium, cobalt,
nickel and manganese (page 3, lines 44-46 and 71-73).
Scipioni does not disclose that the polyvalent metal can be
zinc.
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