Polymerization catalysts for producing polymers with low...

Details Polymerization catalysts for producing polymers with low... Polymerization catalysts for producing polymers with low...

2006-03-31

2009-08-18

Lu, Caixia (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S129000, C526S137000, C526S943000, C502S103000, C502S119000, C502S120000, C502S152000

Reexamination Certificate

active

07576163

ABSTRACT:
This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.

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