Polymerization process

Details Polymerization process Polymerization process

2005-12-20

2005-12-20

Teskin, Fred (Department: 1713)

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

Synthetic resins

Removing only nonpolymerized or nonpolymerizable material...

C526S060000, C526S064000, C526S065000, C526S068000, C526S077000, C526S170000, C526S348000, C526S348200, C526S348300, C526S348400, C526S348500, C526S348600, C526S901000, C526S912000

Reexamination Certificate

active

06977283

ABSTRACT:
The present invention relates to a process for polymerizing monomer and comonomer(s) utilizing a bulky ligand transition metal metallocene-type catalyst or catalyst system, where the process is operated in the absence of or with a low amount of any of the isomers of the comonomer(s). The level of these isomers in the process of the invention are eliminated or maintained below a threshold level. It has been discovered that removal of certain isomers of the comonomer used in a polymerization process using metallocene-type catalysts results in an improved process.

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