C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/642 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)
Patent
CA 2101805
Abstract of the Disclosure: A catalyst for polymerization of olefin is provided which comprises (A) a metallocene compound, (s) an organoaluminum compound, and (C) a metal borate or a metal aluminate. The metallocene compound (A) is represented by the general formula (1) below: Image (1) where Cp1 and Cp2 are independently a substituted or unsubstituted cyclopentadienyl group; R1 is an alkylene group, an arylalkylene group, dialkylsilylene group, dialkylgermanylene group, an alkylphosphinediyl group, or an alkylimino group having 1 to 20 carbons, R1 crosslinking Cp1 and Cp2 together; m is 0 or 1; M is titanium, zirconium, or hafnium; and R2 and R3 are independently hydrogen, halogen, or a hydrocarbon group, an alkoxy group, or an aryloxy group having 1 to 12 carbons, the organic aluminum compound (B) is represented by the general formula (2) below: AlR43 (2) where each R4 is independently hydrogen, an alkyl group, an alkoxy group, or an aryl group, at least one R4 being an alkyl group, and the metal borate or the metal aluminate (C) being represented by the general formula (3): (C(L)n)b(A)d (3) - 20 - where C is an alkali metal cation or an alkaline earth metal cation; L is a Lewis base; A is an anion having elemental boron or elemental aluminum; n is an integer of from 0 to 6; b and d are respectively an integer selected to balance the electric charge. A process of polymerization of olefin is also provided wherein olefin is polymerized in the presence of the above catalyst. with the catalyst and the olefin polymerization process of the present invention, the complicated synthesis steps are eliminated, and polyolefin having excellent properties and high moldability is produced efficiently - 21 -
Yamada Satoru
Yano Akihiro
Swabey Ogilvy Renault
Tosoh Corporation
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