Interference 103,482
corresponds to a different pentad, and the intensity or area
of each peak indicates the percentage of that pentad in the
“stereochemical pentad compositions in the polymer” (Dolle
Application 08/147,006, spec., p. 15, l. 13-14). Compare the
pentad compositions reported in Table II of Ewen, U.S. Patent
5,036,034, from the C-13 NMR spectrum for the hemiisotactic
polypropylene made by the process described in Ewen’s Example
IV (Ewen, U.S. Patent 5,036,034, col. 9, l. 11-22, and col. 8,
l. 21-29).
In light of our findings above, we understand why Winter
pointed (Declaration of Andreas Winter dated July 10, 1995,
p. 2 (RD 2)) to the following statement in Randall, James C.
(Randall), “Carbon-13 Nuclear Magnetic Resonance Quantitative
Measurements of Average Sequence Lengths of Like
Stereochemical Additions in Polypropylene and Polystyrene,”
Journal of Polymer Science, Polymer Physics Edition, Vol. 14,
pages 2083-2094 (1976) (Randall, EE VI, p. 2086):
For a sequence length measurement, an average number of
repeating units is desired that describes a typical run
of like stereochemical configurations terminated by
opposite configurations on either end.
Randall’s statement is the key to the meaning to be given to
the phrases “syndio-isoblock polymer[(s)] having molecular
chains in which syndiotactic and isotactic sequences are
57
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