Polyolefin catalysts, production thereof and method of use

Details Polyolefin catalysts, production thereof and method of use Polyolefin catalysts, production thereof and method of use

2005-01-25

2005-01-25

Lu, Caixia (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S075000, C526S124700, C526S123100, C502S115000, C502S132000

Reexamination Certificate

active

06846887

ABSTRACT:
A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.

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