Patent ID: 6069109
Filing Date: 2000-05-30
Classification: B01J,C07F,C08F

Abstract:
A process for the production of a half-sandwich transition metal catalyst precursor comprising:(I) reacting, in a hydrocarbon medium at a temperature from about 20 to about 60 degrees .degree. C. for approximately one to ten hours under an inert atmosphere, (a) 1 equivalent of a metallocene dihalide of the formula (L)(L')MX.sub.2 wherein M is a metal atom from Groups 4 to 6 of the Periodic Table; X is a halogen atom; and L and L' are the same or different; are bridged to each other or unbridged; and are each independently a substituted or unsubstituted .pi.-bonded ligand coordinated to M; (b) 3 equivalents of a compound of the formula: ##STR5## wherein each Q is the same or different and is independently selected from the group consisting of O, NR, CR.sub.2, and S; Y is either C or S; Z is selected from the group consisting of --OR, --NR.sub.2, --CR.sub.3, --SR, --SiR.sub.3, --PR.sub.2, --H, and a substituted or unsubstituted aryl group; and each R is independently a group containing carbon, silicon, nitrogen, oxygen, and/or phosphorus, and (c) 3 equivalents of a trialkylamine of the formula NR'.sub.3 wherein R' is a hydrocarbon group containing from 1 to 20 carbon atoms; and(II) recovering the product.