Appeal No. 1997-0551
Application 08/157,429
DECISION ON APPEAL
This is a decision on appeal from the examiner's
refusal to allow claims 9-37, all of the claims pending in
this application.
BACKGROUND
Appellants' invention relates to a method of react-
ing tetrafluoroethylene with dichlorofluoromethane to produce
3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-
1,1,2,2,3-pentafluoropropane in the presence of a catalyst
comprising a halogenated oxide of at least one element as
variously specified in the appealed claims. A further under-
standing of the invention can be derived from a reading of
exemplary claim 9, which is reproduced below.
9. A method for producing 3,3-dichloro-1,1,1,2,2-
pentafluoropropane and 1,3-dichloro-1,1,2,2,3-
pentafluoropropane, which comprises reacting
tetrafluoroethylene with dichlorofluoro-methane in the
presence of a catalyst comprising a halogenated oxide
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007