Appeal No. 1999-1418
Application No. 08/418,847
for the cyclic
type, in which,
in the formulae
(II) and (III),
R is a10 C -C -1 6
alkyl group
and n is an
integer from 2
to 50, wherein
the metalloc
ene is at least
one compound of the formula (I)
in which
M is zirconium or hafnium,
4
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