Appeal 2007-2133
Application 10/790,502
. . . applied on the plates . . . in a fluid state and then solidified in situ,
comprises a blend of one or [sic] reactive coating precursors that are
subsequently polymerized and/or cross-linked” (id. 6:4-6). Appellants
further state “[h]ere, ‘reactive’ means that the components of the coating 132
react with one another other[sic] or self-react to cure (solidify)” (id. 6:6-8).
Appellants disclose “Epoxy-Nitrile Resins” which include, among
other things, such resins from “useful components of the coating precursor
[which] include an epoxy resin, an acrylonitrile butadiene copolymer, an
optional film-forming thermoplastic polymer, . . . and a polyamine cross-
linking agent,” identifying these ingredients as the “reactive coating
precursor” (id. 18:5-12). The coating precursor composition can include
solvents as well as numerous additives, including fillers, plasticizers, and
pigments (id. 18: 12-15 and 20:11-29). The examples of the reactive “epoxy
resins” include diglycidyl ethers of aromatic and aliphatic polyols, which
can contain two or more epoxy groups; the reactive “acrylonitrile butadiene
copolymer” include carboxylic acid group containing copolymers; and the
reactive “polyamine cross-linking agent,” that is, “curing agent,” include
“aliphatic, alicyclic, or aromatic polyamines” (id. 18:18 to 19:24). In
addition to the polyamine curing agent, the reactive coating precursor
compositions can optionally include a catalyst (Specification 19:12-13). The
polyamine curing agent “can react with carboxylic acid groups . . . of the
acrylonitrile butadiene copolymer and the oxirane groups[, that is, epoxy
groups,] of the epoxy resin” (id. 19:13-15).
Examples of epoxy nitrile resin reactive precursor compositions
containing these ingredients, thus resulting in epoxy nitrile resins upon
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