Appeal No. 1995-4851
Application 08/167,656
CCl FCH Cl is maximized and formation of the more
2 2
highly fluorinated CF CH Cl is minimized.
3 2
Manzer does not disclose whether the catalyst includes $-
aluminum fluoride. However, as indicated by the examiner
(answer, page 5), Manzer discloses (col. 3, lines 13-40) a
process for making his catalyst which is very similar to the
process disclosed by appellants for making their catalyst
(specification, page 6, line 32 - page 7, line 30).
Appellants do not deny that Manzer’s catalyst contains $-
aluminum fluoride (brief, page 19).
For the above reasons, we find that the only difference
between Manzer’s disclosure and the process recited in
appellants’ claim 1 is that Manzer does not disclose that his
catalyst contains zinc.
Groppelli discloses a catalyst for preparing fluorinated
or chlorofluorinated hydrocarbons (col. 1, lines 16-17). The
catalyst consists essentially of aluminum fluoride containing
minor quantities of zinc, chromium, nickel and preferably iron
compounds, wherein the zinc is 0.05-5 wt% of the catalyst and
the zinc, chromium, nickel and iron compounds are present at
least partially in the form of halides, particularly
6
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