Appeal 2007-4316
Application 09/911,268
processes such as chromatography or solvent extraction. (268 Application
at 22:1–5.)
7. A particular example of an oligophosphate is shown in formula (V), in
which R1, R2, R3 and R4 are all phenyl, n and q are 0, and N, the
oligomerization index, is 1.1. (Y, isopropyldene, is -C(CH3)2-).
(268 Application at 27:10–19.)
8. The inventors provide in Table 2 a comparison of the physical
properties of a sample of polycarbonate containing an oligophosphate having
9 wt% IPP with an otherwise identical polycarbonate containing an
oligophosphate having 0.1 wt% IPP. (268 Application at 30.)
9. The properties are said to have been determined according to various
standards listed in the 268 Application at 29.
10. According to Table 2, the polycarbonate sample having less IPP has a
higher notched impact strength, higher heat resistance, higher flame
resistance, and exhibits less yellowing upon aging. (268 Application at 30.)
Eckel 930
11. Eckel 930 describes flame resistant polycarbonate molding
compositions. (Eckel 930 at 2:26–3:11.)
12. The Eckel 930 compositions comprise, inter alia, component D that is
an oligophosphate comparable to the oligophosphates described in the
268 Application, but for the limitation on the amount of IPP (Id. at 8:1–54).
13. In particular, Eckel 930 oligophosphate D.1 is within the scope of
formula (I) of the 268 Application, and is nearly the same as the
oligophosphate of formula (V) used in the example of the 268 application
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