Appeal No. 2006-0436
Application No. 09/942,465
resins as textile treating compositions, wherein the
blocked isocyanates are the reaction product of
polyisocyanates, including aromatic isocyanates; active
hydrogen compounds containing ionic or potential ionic
groups, including sulfonate and/or ter-amino groups;
polyoxyalkylene ethers; and blocking agents. See also
Reiff ‘370, column 1, lines 10-15, column 2, lines 3-15
and 63-65 and column 4, lines 1-12; and Reiff ‘737,
column 10-27, column 2, lines 3-14 and 59-60, and
column 3, line 65 to column 4, line 10.
The appellants do not challenged this finding. See the Brief in
its entirety. Rather, the appellants argue that one of ordinary
skill in the art would not have been led to employ pyrazoles (the
claimed pyrazole and pyrazole derivatives) as the blocking agent
of Reiff ‘370 or ‘737. Id. We do not agree.
We find that it can be inferred from columns 1, 2 and 4 of
Reiff ‘370 and ‘737 that any conventional NCO-blocking agent can
be used to form their blocked aromatic isocyanates having ionic
compounds containing at least one NCO-reactive group and at least
one, for example, amino or sulfonate group. We find that Reiff
‘370 and ‘737 teach that the preferred conventional NCO blocking
agents may be “compounds with preferably one group capable of
reacting with isocyanate groups and undergoing an addition
reaction with organic isocyanates above 50 0C...” See Reiff
‘370, column 10, lines 50-54 and Reiff ‘737, column 10, lines 50-
5
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