Cationic catalyst system

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S160000, C526S172000, C502S162000, C502S167000, C502S117000, C502S152000, C502S155000

Reexamination Certificate

active

10399736

ABSTRACT:
A 3+ metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a anionic multidentate ligand and at least two monoanionic ligands. The multidentate ligand and the transition metal form a metallocycle having at least five primary atoms, counting any π-bound cyclopentadienyl group in the metallocycle as two primary atoms. Olefin polymerization is exemplified.

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