Cascaded polyolefin slurry polymerization employing...

Details Cascaded polyolefin slurry polymerization employing... Cascaded polyolefin slurry polymerization employing...

2005-07-26

2005-07-26

Teskin, Fred (Department: 1713)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C526S064000, C526S065000, C422S132000, C422S134000

Reexamination Certificate

active

06921804

ABSTRACT:
A disengagement vessel employing a lock hopper effectively reduces concentration of non-polymer-associated components in the polymer product slurry of a first olefin slurry polymerization reactor, allowing cascading of a second slurry polymerization reactor operating at lesser concentration of comonomers, hydrogen, and other components to produce multicompositional polyolefin polymers and/or polymers having a multimodal monomer distribution, e.g. diblock polymers having substantially non-overlapping comonomer contents between the blocks.

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