Interference 103,482
Syndiotactic polyolefins generally include a high
percentage of syndiotactic sequences, i.e., “racemic” dyads r,
or successive methyl or other alkyl groups on opposite sides
of the polymer plane (Ewen Brief, pp. 2-3; Ewen et al., U.S.
Patent 4,892,851 (EE I), col. 1, l. 43, to col. 3, l. 6; Ewen,
U.S. Patent 5,036,034 (Appendix F), col. 1, l. 12-47; Dolle
Application 08/147,006, specification, p. 1, l. 12-14):
\
\
“racemic” dyad r
A “racemic” triad rr generally has the following configuration
(Ewen Brief, pp. 3-4, bridging para.):
\
\ \
“racemic” triad rr.
Syndiotactic polyolefins generally have a high percentage of
“racemic” triads rr.
(6) Hemiisotactic polyolefin
Hemiisotactic polyolefins generally have one or more of
the following configurations:
\ \ \ \ \ \ \
\ \ \
44
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