Patent ID: 6121185
Filing Date: 2000-09-19
Classification: C07F,C08F

Abstract:
A catalyst composition useful for polymerization of addition polymerizable monomers comprising a Group 4 metal complex and a catalyst activator comprising a cation which is a Bronsted acid capable of donating a proton, and an inert, compatible, non-coordinating, anion, having a solubility at 25.degree. C. in hexane, cyclohexane or methylcyclohexane of at least 5 weight percent said activator having the formula:[L*-H].sub.d.sup.+ A.sup.d-,wherein:L* is a nitrogen, sulfur or phosphorus containing Lewis base comprising from 1 to 3 C.sub.10-40 alkyl groups with a total of from 12 to 100 carbons;(L*-H).sup.+ is a Bronsted acid;A.sup.d- is selected from the group consisting of:A) sterically shielded diboron anions corresponding to the formula: ##STR6## wherein: S is alkyl, fluoroalkyl, aryl, or fluoroaryl (and where two S groups are present additionally hydrogen),ArF is fluoroaryl, andX.sup.1 is either hydrogen or halideandB) anions corresponding to the formula: [M'.sup.k+ Q.sub.n,].sup.d-, wherein:k is an integer from 1 to 3;n' is an integer from 2 to 6;n'-k=d;M' is an element selected from Group 13 of the Periodic Table of the Elements; andQ independently each occurrence is selected from hydride, dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, and halosubstituted-hydrocarbyl radicals, said Q having up to 20 carbons with the proviso that in not more than one occurrence is Q halide; andd is an integer from 1 to 3.