Polymerization process for preparing polyolefin blends

Details Polymerization process for preparing polyolefin blends Polymerization process for preparing polyolefin blends

2011-07-26

2011-07-26

Eashoo, Mark (Department: 1767)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S191000, C525S240000

Reexamination Certificate

active

07985799

ABSTRACT:
A process for preparing polyolefin blends comprising:a) polymerizing in a solution phase propylene or 1-butene to prepare a polymeric solution containing a semicrystalline polymer component;b) polymerizing in a solution phase 1-hexene or 1-octene to prepare a polymeric solution containing an amorphous polymer component;c) mixing the polymeric solutions obtained from steps a) and b);d) subjecting the mixture of step c) to a devolatilization step to separate a polyolefin blend comprising a semicrystalline component and an amorphous component;the polymerization steps a) and b) being carried out in two polymerization reactors connected in parallel.

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