Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in two or more physically distinct zones
Reexamination Certificate
2005-06-20
2010-02-16
Teskin, Fred M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in two or more physically distinct zones
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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Hagerty Robert Olds
Iaccino Larry L.
Jiang Peijun
Shirodkar Pradeep P.
Shutt John Richard
Bell Catherine L.
ExxonMobil Chemical Patents Inc.
Teskin Fred M
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