Transition metal compound, ligand system, catalyst system...

Details Transition metal compound, ligand system, catalyst system... Transition metal compound, ligand system, catalyst system...

2000-12-13

2008-03-11

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S161000, C526S129000, C526S134000, C526S943000, C526S170000, C556S053000, C502S103000, C502S152000

Reexamination Certificate

active

07342078

ABSTRACT:
A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

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