Appeal 2007-1850
Application 10/939,879
1. An aqueous polymer dispersion comprising
a) at least one polyurethane dispersion having a mean particle size of
from 60 to 350 nm, and
b) at least one polychloroprene dispersion having a mean particle size of
from 60 to 300 nm, and
c) at least one aqueous silicon dioxide dispersion having a particle
diameter of the SiO2 particles of from 1 to 400 nm.
The Examiner relies upon the following references as evidence of
obviousness:
Raines US 5,017,630 May 21, 1991
Duan US 6,017,998 Jan. 25, 2000
Appellants’ claimed invention is directed to an aqueous polymer
dispersion comprising at least three components, namely, dispersions of
polyurethane, polychloroprene, and silicon dioxide. According to
Appellants, the claimed polymer dispersion makes it “possible to produce
adhesives which exhibit a high initial strength, wet strength, and stability to
heat after bonding” (Br. 3, first para.).
Appealed claims 1-16 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Duan in view of Raines.
Appellants have not set forth an argument that is reasonably specific
to any particular claim on appeal. Accordingly, all the appealed claims
stand or fall together with claim 1.
We have thoroughly reviewed each of Appellants’ arguments for
patentability, as well as the Specification data relied upon in support thereof.
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