Appeal No. 1999-0905 4
Application No. 08/504,319
and the corresponding bis-4,5,6,7-tetrahydroindenyl compounds,
wherein:
1 2
on each indenyl or tetrahydroindenyl group the substituents R and R ,
same or different from each other, are hydrogen atoms, -CHR2
groups, or -CHR- groups that form a cycle comprising from 3 to 8
carbon atoms, wherein the R substituents are hydrogen atoms, C -C
1 20
alkyl radicals, C -C cycloalkyl radicals, C -C alkenyl radicals, C -3 20 2 20 6
C aryl radicals, C -C alkaryl radicals or C -C aralkyl radicals20 7 20 7 20
and can contain Si or
Ge atoms;
3 4 5 6
the substituents R , R , R and R , same or different from each other,
3 4 5 6
are defined as R substituents, in addition two adjacent R , R , R and R
substituents on the same ring can form a ring comprising from 5 to 8
carbon atoms;
M is a transition metal atom of groups IVb, Vb or VIb of the Periodic
Table;
substituents X, same or different from each other, are hydrogen
7 7 7 7 7
atoms, halogen atoms, -R , -OR ,- SR , -N R or -PR groups where2 2
7
substituent R are defined as substituent R; and
(B) at least a compound selected from the group consisting of (a) organo-
metallic compounds of aluminum containing at least a heteroatom
selected from the group consisting of oxygen, nitrogen and sulphur,
and (b) compounds capable of reacting with the metallocene
compound to form an alkyl metallocene cation.
THE REFERENCE OF RECORD
As evidence of obviousness, the examiner relies upon the following reference:
Waymouth et al. (Waymouth) 5,594,080 Jan. 14, 1997
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