| abstract |
A composition useful as an addition polymerization catalyst comprising:A) an inert support;B) a Group 3-10 or Lanthanide metal complex; andC) an activator compound capable of causing the metal complex B) to form an active polymerization catalyst, said compound corresponding to the formula:wherein:A* is a cation of charge +a,Z* is an anion group of from 1 to 50, preferably 1 to 30 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites;J* independently each occurrence is a Lewis acid coordinated to at least one Lewis base-site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality,j is a number from 2 to 12 anda, b, c, and d are integers from 1 to 3, with the proviso that axb is equal to cxd. |