Appeal 2007-2739
Application 11/106,321
for fiber treatment[,] and in automotive coatings” (Specification 1).
Silylisocyanurate compounds can be prepared by cracking a
silylorganocarbamate in the presence of a cracking catalyst to produce a
silylorganoisocyanate intermediate, and then, without isolating the
intermediate, allowing it to undergo trimerization in situ (id.).
However, the aluminum- and tin-containing cracking catalysts
typically used in such processes “involve[] certain disadvantages, either for
the cracking/trimerization process itself or, potentially, for the
silylisocyanurate product resulting from the process” (id. at 2). The
Specification discloses a process of making silylisocyanurate that “dispenses
entirely with the metal-containing alkoxide and tin-containing cracking
catalysts . . . which may actually hinder the progress of the subsequent
trimerization reaction” (id.).
DISCUSSION
1. CLAIMS
Claims 1 and 3-20 are pending and on appeal. Appellants state that
“Claims 1 [and] 3-20 stand or fall together” (Br. 2).1 Claim 1 is
representative and reads as follows:
1. A process for making silylisocyanurate which
compromises [sic] cracking silylorganocarbamate in the
presence of a catalytically effective amount of, as cracking
catalyst, at least one carboxylate salt selected from the group
consisting of ammonium carboxylate, alkali metal carboxylate
and alkaline earth metal carboxylate to provide
silylorganoisocyanate and trimerizing silylorganoisocyanate in
the presence of the carboxylate salt to provide silylisocyanurate
1 Appeal Brief filed September 21, 2006.
2
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