Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2007-11-20
2007-11-20
Lu, Caixia (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S152000, C502S167000, C526S134000, C526S348000, C568S006000
Reexamination Certificate
active
11186238
ABSTRACT:
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+[B—(ArfRn)4]−in-line-formulae description="In-line Formulae" end="tail"?where Ct+is a cation capable of extracting an alkyl group from, or breaking a carbon-metal bond of, an organo metallic compound; Arfis 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 Arfgroup 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 Arfgroup and the boron atom.
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Bell Catherine L.
ExxonMobil Chemical Patents Inc.
Lu Caixia
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