Catalyst preparation method

Details Catalyst preparation method Catalyst preparation method

2007-06-12

2007-06-12

Wu, David W. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S134000, C526S172000, C526S161000, C526S943000, C526S351000, C526S348600, C526S348200, C502S104000, C502S114000

Reexamination Certificate

active

11173029

ABSTRACT:
A two-step catalyst preparation method is disclosed. First, a support is combined with an indenoindolyl Group 3-10 metal complex and a first activator comprising an alkyl alumoxane to give a supported complex. The supported complex is subsequently combined with a second activator comprising an ionic borate to produce a borate-treated supported complex. Activating indenoindolyl metal complexes in this sequence surprisingly provides an exceptional activity boost compared with other ways of activating them with either or both types of activators.

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