Process for polymerization of α-olefin

Details Process for polymerization of α-olefin Process for polymerization of α-olefin

2005-07-05

2005-07-05

Teskin, Fred (Department: 1713)

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

Synthetic resins

Polymerizing in two or more physically distinct zones

C526S066000, C526S901000

Reexamination Certificate

active

06914104

ABSTRACT:
The object of the present invention is to provide a polyolefin polymerization method which prevents fine particles of polymer from scattering from a fluidized bed in a gas phase polymerization reactor. This object is achieved by a process for polymerization of α-olefin in multi-stage polymerization process and in at least two serially arranged polymerization reactors including a gas phase polymerization reactor, the process comprising;drawing out polyolefin particles from a polymerization reactor, andtransferring the polyolefin particles into the interior of fluidized bed of a gas phase polymerization reactor of the next stage.

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