C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/107, 252/93
C08F 4/603 (2006.01) C08F 4/643 (2006.01) C08F 4/76 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1340578
The present invention provides a method of stabilizing an active ionic polymerization catalyst species comprising stabilizing said species with a water-stable anion containing a plurality of lipophilic radicals covalently coordinated to and shielding a central, formal charge bearing metal or metalloid atom, in which the lipophilic radicals of the anion include at least one substituted aromatic radical. It also provides a method of stabilizing an active ionic polymerization catalyst species comprising stabilizing said species with an anion represented by the general formula: [BAr1Ar2X3X4]- wherein B is boron is a valence state of 3; Ar1 and Ar2 are the same or different substituted-aromatic hydrocarbon radicals which radicals may be linked to each other through a stable bridging group; and X3 and X4 are, independently, selected from the group consisting of hydride radicals, halide radicals, hydrocarbyl radicals, substituted-hydrocarbyl radicals, and organometalloid radicals.
617074
Hlatky Gregory George
Turner Howard William
Borden Ladner Gervais Llp
Exxon Chemical Patents Inc.
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