Appeal No. 1999-1418
Application No. 08/418,847
3 4
or in each case two adjacent radicals R or R , together
with the carbon atoms joining them, form a ring,
5 6 7
R , R and R are a hydrogen atom and
R is a phenyl, benzyl, methyl, ethyl, trifluoromethyl or8
methoxy group.
6. A process for the preparation of a polyolefin by
polymerization of an olefin of the formula R -CH=CH-R , in11 12
11 12
which R and R are identical or different and are a hydrogen
B B
atom or a C -C -alkyl radical, at a temperature of 0 C to 150 C,
1 14
under a pressure of 0.5 to 100 bar, in solution, in suspension
or in the gas phase and in the present of a catalyst which
consists essentia
lly of a metalloc
ene and an
aluminoxa ne of
the formula
(II)
for the linear type, and/or of the formula (III)
3
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