Appeal No. 2006-0436
Application No. 09/942,465
polyisocyanates blocked by pyrazole or pyrazole derivatives,
which are useful for “treating textiles, paper or leather.” See
the specification, page 1. Claims 1 and 8 are representative of
the appealed subject matter and read as follows:
1. An NCO-containing reaction product blocked at the NCO
groups by 1-H-pyrazole or a derivative thereof, wherein the NCO-
containing reaction product is a reaction product of
(A) one or more aromatic polyisocyanates,
(B) one or more NCO-reactive compounds containing sulfonate
and/or tert-amino groups, and
(C) optionally, one or more further NCO-reactive compounds other
than compounds (B).
8. A process for preparing a blocked NCO-containing reaction
products according to Claim 1 comprising reacting components (A),
(B), and optionally (C) and 1-H-pyrazole or a derivative thereof
as a blocking agent with each other at one and the same time or
in any desired order.
EVIDENCE
As evidence of obviousness of the claimed subject matter,
the examiner relies on the following prior art references:
Reiff et al. (Reiff ‘370) 5,508,370 Apr. 16, 1996
Reiff et al. (Reiff ‘737) 5,693,737 Dec. 2, 1997
Danner WO 99/52961 Oct. 21, 1999
(Published International Patent Application)
As evidence of nonobviousness of the claimed subject matter,
the appellants rely on the following references:
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