Impact copolymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in two or more physically distinct zones

Reexamination Certificate

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Details

C526S206000, C525S053000

Reexamination Certificate

active

07662892

ABSTRACT:
This invention relates to a continuous process to prepare olefin impact copolymers comprising producing a semi-crystalline olefin polymer in a first reactor and then transferring the reactor contents to a second reactor where a low crystallinity olefin polymer is produced in the presence of the semi-crystalline polymer, where a fluorinated hydrocarbon is present in the polymerization medium of the first reactor, the second reactor or both reactors.

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