Appeal No. 1999-1418
Application No. 08/418,847
1 2
R and R are identical or different and are a hydrogen
atom, a C -C -alkyl group, a C -C -alkoxy group,1 10 1 10
a C -C -aryl group, a C -C -aryloxy group, a C -C -6 10 6 10 2 10
alkenyl group, a C -C -arylalkyl group, a
7 40
C -C -alkylaryl group, a C -C -arylalkenyl group740 8
7 40 40
or a halogen atom,
3 4
R and R are identical or different and are a hydrogen
atom, a halogen atom, a C -C -alkyl group or a
1 10
9 9 9 9 19 9
-NR , SR , -OR , -OSir -Sir or -PR radical,103
2 3, 2
in which R is a C -C -alkyl group, a C -C -aryl9 1 10 6 10
group or, in the
case of radical
s contain
ing Si or
P, also
a halogen atom,
or in each
case two adjacen
t radicals R or3
R ,4 togethe
r with the carbon atoms joining them, form a ring,
5 7
R and R are a hydrogen atom and
6 8
R and R are identical or different and are a phenyl, benzyl,
methyl, ethyl, trifluoromethyl or methoxy group.
23. 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
atom or a C -C -alkyl radical, at a temperature of 0 C to 150 C,1 14 B B
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 essentially of a metallocene and an aluminoxane of
the formula (II)
5
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