Appeal No. 2006-0436
Application No. 09/942,465
polyisocyanate according to its invention by employing the
claimed pyrazole, i.e., dimethylpyrazole. See column 8, Example
3. This claimed pyrazole is shown to block the NCO groups of a
polyisocyanate at a temperature of 80 oC (above 50 oC). Id. In
other words, Baumbach also teaches that the claimed pyrazole is
within the category of the NCO blocking agents preferred by Reiff
‘370 and ‘737 as indicated supra.
Deiner and Reiff ‘737, on the other hand, do not mention
pyrazole blocking agents. See Deiner and Reiff ‘737 in their
entirety. Rather, they state that any conventional NCO blocking
agents may be used to block the NCO groups of their
polyisocyanates so that they can form desired blocked
polyisocyanates for treating textiles materials. See Deiner,
column 2, line 62 to column 3, line 1 and Reiff ‘737, columns 1,
2, and 3.
Thus, for the reasons well articulated by the examiner at
pages 6 through 9 of the Supplemental Answer and set forth above,
it cannot be said that the appellants have carried their burden
of rebutting the prima facie case established by the examiner.
Indeed, the references of record relied upon by the appellants
support, rather than negate, obviousness of the claimed
invention.
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