Patent ID: 6344577
Filing Date: 2002-02-05
Classification: C07F,C08F,Y10S

Abstract:
A process for making a metallocene compound comprising adding:a) a compound of the formula MeQp+2; b) a silicon hydrocarbyl compound; and c) a substituted cyclopentadiene of the formula (C5Râ€²m), to form a compound of the formula: Râ€³(C5Râ€²m)2MeQp â€ƒwherein Râ€² is hydrogen and (C5Râ€²m) is cyclopentadienyl or Râ€² is hydrogen or a hydrocarbyl radical having from 1-20 carbon atom is, each Râ€² being the same or different and (C5Râ€²m) is substituted cyclopentadienyl; Râ€³ is a silicon hydrocarbyl radical and acts as an interannular bridge between the two (C5Râ€²m) rings; Q is a hydrocarbon radical chosen from the group consisting of an aryl, alkyl alkenyl, alkylaryl and arylalkyl radical having 1-20 carbon atoms or is a halogen; Me is a group 4b, 5b, or 6b metal as designated in the Periodic Table of Elements; 0&lE;m&lE;4; and 0&lE;p&lE;3, provided that when all R's are hydrogen, m does not equal 4.