摘要 |
A fluorophenylborate useful as an activator for an olefin polymerization catalyst is represented by the formula: <?in-line-formulae description="In-line Formulae" end="lead"?>Ct<SUP>+</SUP>[B-(Ar<SUP>f</SUP>R<SUB>n</SUB>)<SUB>4</SUB>]<SUP>-</SUP><?in-line-formulae description="In-line Formulae" end="tail"?> where Ct<SUP>+</SUP> is a cation capable of extracting an alkyl group from, or breaking a carbon-metal bond of, an organo metallic compound; Ar<SUP>f </SUP>is a fluorophenyl group; n is 1 or 2; and each R is independently selected from a fluorophenyl group and a fluoronaphthyl group, provided that when n=1, each R group is connected at the 3-position relative the connection between the associated Ar<SUP>f </SUP>group and the boron atom and, when n=2; the R groups are connected at the 3-position and the 5-position respectively relative the connection between the associated Ar<SUP>f </SUP>group and the boron atom.
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