Patent Number: 6,255,246

Title: Boratabenzene cocatalyst with metallocene catalyst

Abstract: Boratabenzene cocatalysts, especially novel pentafluorophenyl boratabenzenes, are useful cocatalysts or activators with metallocenes. They are less expensive than prior art activators, are soluble and offer more irreversible reactions. Compositions comprise at least one metallocene catalyst and at least one dihydroboratabenzene or anion thereof. Processes include polymerizations with metallocenes in the presence of a boratabenzene cocatalyst.

Inventors: Devore; David D. (Midland, MI), Timmers; Francis J. (Midland, MI), Neithamer; David R. (Midland, MI)

Assignee: The Dow Chemical Company

International Classification: C08F 10/00 (20060101); C08F 4/619 (20060101); C08F 4/6192 (20060101); C08F 4/00 (20060101); B01J 031/00 (); B01J 037/00 (); B01J 021/02 (); C08F 004/02 (); C08F 004/60 ()

Expiration Date: 07/03/2018