Appeal No. 1996-1566
Application No. 08/095,369
The examiner relies upon a combination of three
references to disclose the claimed subject matter. It is the
examiner’s position that one skilled in the art would have
found it obvious to add an organometallic catalyst taught in
Sumida to the composition of Endo as an adhesion promoter for
a hydroxy terminated polydiorganosiloxane. See Answer, page
5. We disagree.
Endo discloses a primer composition on a substrate
material. See column 1, lines 6 - 8. The primer includes an
epoxy resin, an amino group containing silane, an additional
organic silicon containing compound, a silane containing a
mercapto group and an organic solvent. See Endo, column 1,
line 55 through column 2, 12. The composition is spread as a
primer on base materials such as glass, aluminum, mortar and
polyester. Thereafter an aminoxy-type silicone sealant is
applied to the primer. See Example 1.
We find that Endo discloses each of the components (A), (B)
and (D) required by the claimed subject matter. There is no
disclosure of component (C), an organometallic compound.
Sumida likewise discloses a primer composition spread on
a substrate as a primer for silicon rubber or an elastomeric
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