Process for producing ethylene- α -olefin-polyene...

Details Process for producing ethylene- α -olefin-polyene... Process for producing ethylene- α -olefin-polyene...

2007-01-04

2010-06-01

Lu, Caixia (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S160000, C526S161000, C526S336000, C526S339000

Reexamination Certificate

active

07728085

ABSTRACT:
The present invention provides a process for producing an ethylene-α-olefin-unconjugated polyene random copolymer in an aliphatic hydrocarbon solvent under conditions of high-temperature and high-activity. The process comprises polymerizing at least the following components (a)-(c) in an aliphatic hydrocarbon solvent in the presence of a catalyst comprising (A) a transition metal complex having at least one cyclopentadienyl skeleton and (B) an organoaluminum compound and (C) a boron compound as co-catalysts wherein at least a part of the polyene (c) and at least a part of the boron compound (C) are previously contacted with each other before they are introduced into a polymerization reactor:(a): ethylene(b): an α-olefin of 3-20 carbon atoms(c): a polyene.

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