Process for producing olefin polymer and olefin polymers
AssigneeMitsui Chemicals, Inc.
InventorsJun-ichi Imuta, Tetsuhiro Matsumoto
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Abstract
An olefin polymer production method is provided by which olefin polymers can be obtained at high polymerization activity under the conditions of reduced hydrogen concentration. Silyl-terminated olefin polymers may be obtained by this method. The olefin is polymerized using a catalyst of a transition metal compound (A) of Groups 3 to 10 of the periodic table, at least one compound (B) selected from organoaluminum oxycompounds (B-1), compounds (B-2) that react with the abovementioned compound (A) to form an ion pair, and organoaluminum compounds (B-3), under the coexistence of an organosilicon compound (C) or dialkylzinc compound (D) and in the presence or absence of hydrogen (E).
Claims5
A process for producing an olefin polymer characterized in that olefin polymerization or copolymerization is carried out under the presence of:
- a catalyst, comprising
- (A) a compound of a transition metal selected from among groups 3 to 10 of the periodic table with lanthanides and actinides being included in group 3 and
- (B) at least one compound selected from among
- (B-1) organoaluminum oxycompounds,
- (B-2) compounds that react with the abovementioned compound (A) to form an ion pair, and
- (B-3) organoaluminum compounds and under the coexistence of
- (C) an organosilicon compound represented by the general formula (1) given below, or (D) a dialkylzinc compound represented by the general formula (II) given below,
- R1R2R3SiH (I)
- wherein R1, R2 and R3 may be the same or may differ from each other, with each indicating a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, an aryl group of 6 to 12 carbon atoms, an alkylaryl group of 7 to 20 carbon atoms, an arylalkyl group of 7 to 20 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, a phenoxy group, a fluoroalkyl group of 3 to 6 carbon atoms, a dialkylamino group containing alkyl groups of 1 to 4 carbon atoms, or a diorganopolysiloxane chain containing 1 to 10 siloxane units
- ZnR4R5 (II)
- wherein R4 and R5 may be the same or may differ from each other, with each indicating an alkyl group of 1 to 20 carbon atoms and
- (E) hydrogen.
Dependencies are inferred from the claim text.