Patent ID: 6087460
Filing Date: 2000-07-11
Classification: B01J,C07F,C08F,C08G,Y10S

Abstract:
A method of polymerizing an .alpha.-olefin or copolymerizing a mixture of .alpha.-olefins comprising the steps of adding a catalyst (LL'MR).sup.+ (RBR'R"").sup.- to said .alpha.-olefin where L,L' = C.sub.5 H.sub.n R.sub.5-n, indenyl, allyl benzyl, C.sub.5 H.sub.n R.sub.4-n XNR M = Th, Zr, Hf, Ti or U; X = R.sub.2 '''Si, where R''' is an alkyl or aryl group (C .ltoreq. 10) R, R''' = alkyl, benzyl, or aryl group (C .ltoreq. 20), hydride, silyl B = Boron R' = flurinated biphenyl R'' = fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic fused rings.