Process for producing ethylene- alpha -olefin-polyene random copolymer
AssigneeSumitomo Chemical Company, Limited
InventorJun Kawashima
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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.
Claims9
A process for producing an ethylene-α-olefin-polyene random copolymer which 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 introducing into a polymerization reactor:
- (a):
- ethylene
- (b):
- an α-olefin of 3-20 carbon atoms
- (c):
- a polyene.
Dependencies are inferred from the claim text.