Appeal No. 1997-3036
Application No. 08/268,094
methacrylic acid and acrylic acid. (Takiyama, col. 3, lines 34-39). In carrying out the reaction,
the epoxy compounds and the acid are used in such amounts that the total carboxyl groups of the
acid is at least 0.1 mol to each mol of the epoxy group of the epoxy compound, preferably the
total carboxyl groups range from 0.2 to 1.2 moles per epoxy group. (Takiyama, col. 4, lines 23-
33). Accordingly, Takiyama disclose the formation of both partial and fully acrylated epoxy
compounds. Yet, as with Fekete, Takiyama fails to disclose appellants' claimed epoxy acrylates
of formula (III) with acrylate side radicals M or an epoxy acrylate of formula (III) with one
acrylate end group and one aromatic bifunctional compound having an -OH radical as the other
end group. Consequently, Takiyama fails to provide the requisite motivation or suggestion
necessary for the person skilled in the art to modify the disclosed unsaturated ester resins and
form appellants' claimed epoxy acrylate.
Secondary References
The Green Reference
Green teaches novel epoxide resins for use in the preparation of printing plates and
printed circuits. (Green, col. 12, lines 8-18). Green's epoxide resins are capable of
polymerization on exposure to actinic radiation and have, per average molecule, at least two
photopolymerizable groups and also at least two 1, 2-epoxide groups. (Green, abstract). To
improve the adhesion of the epoxide resins, Green teaches that the epoxide resins contain a
glycidyl ether group attached to a secondary carbon atom. (Green, col. 1, line 60 to col. 2, line
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