Process for production of 4-methyl-1-pentene polymer or...

Details Process for production of 4-methyl-1-pentene polymer or... Process for production of 4-methyl-1-pentene polymer or...

C - Chemistry, Metallurgy

08

F

402/584

C08F 10/14 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1223100

A B S T R A C T A process for producing a polymer or copolymer of 4-methyl-1-pentene, which comprises polymerizing 4- methyl-1-pentene or copolymerizing 4-methyl-1-pentene with up to about 20 mole % of an olefin having 2 to 20 carbon atoms in the presence of a catalyst comprising (A) a solid highly active titanium catalyst component composed of magnesium, titanium, halogen and a diester of a dicarboxylic acid, (B) an organoaluminum compound, and (C) an organosilicon compound represented by the following formula R13Si(OR2) wherein each of R1 and R2 represents a hydrocarbon group with 1 to 5 carbon atoms, and the three R1 groups may be identical or different, wherein prior to the polymerization or copolymerization, a methylpentene is pre-polymerized or pre-copolymerized in the presence of a catalyst comprising the catalyst component (A), a part of the catalyst component (B) and a part of the catalyst component (C) to form about 1 to about 1000 grams, per millimole of titanium atom, of a methylpentene polymer or copolymer.

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