Appeal 2007-3686
Application 10/965,349
STATEMENT OF THE CASE
The subject matter on appeal is directed to “reacting an organic
isocyanate with an isocyanate-reactive compound in the presence of a
blowing agent composition which includes greater than 0.5% by weight
(based on total weight of foam forming materials) of water and less than
12% by weight (based on total weight of foam forming materials) of HFC-
245fa” (Specification 3, ll. 22-26). The resulting polyurethane/polyurea
foams may have “good insulation characteristics (as measured by k-factor)”
(Specification 1, ll. 3-6). Further details of the appealed subject matter are
recited in representative claim 8 reproduced below:
8. A foam-forming reaction mixture comprising:
a) an organic isocyanate,
b) an isocyanate-reactive compound and
c) a blowing agent comprising
(1) greater than about 0.5% by weight, based on
total weight of foam forming materials, of
water and
(2) less than 12 % by weight, based on total weight
of foam forming materials, of HFC-245fa.
As evidence of unpatentability of the claimed subject matter, the
Examiner has relied upon the following references:
Lund 5,688,833 Nov. 18, 1997
Doerge 6,562,880 B1 May 13, 2003
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