Inventors:
Helmut G. Alt - Bayreuth, DE
Konstantinos Patsidis - Bayreuth, DE
M. Bruce Welch - Bartlesville OK
Rolf L. Geerts - Bartlesville OK
Bernd Peifer - Bayreuth, DE
Syriac J. Palackal - Bartlesville OK
Assignee:
Phillips Petroleum Company - Bartlesville OK
International Classification:
C08F 4648
Abstract:
A composition is provided comprising a metallocene having the formula of: ##STR1## wherein each Z can be the same or different hydrocarbyl radical selected from the group consisting of cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, and mixtures thereof; each X can be the same or different and is selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, R, OR, NR. sub. 2, PR. sub. 2, or OQ, or mixtures thereof wherein the R is a C. sub. 1 -C. sub. 20 hydrocarbyl radical and Q is an inorganic moiety selected from the group consisting of silica, alumina, clay, phosphated alumina, and mixtures thereof; each Y can be the same or different and is an alkyl group, hydrogen, fluorine, chlorine, bromine, iodine, or mixtures thereof; E is selected from C, Sn, Si, Ge, B, Al, N, or P; M is a metal selected from Ti, Zr, Hf, Sc, Y, V, or La; m is a number sufficient to fill out the valences of metal M; and n is 1 or 2. Also provided is a process for preparing the metallocene by contacting a hydrocarbon having an acidic, replaceable hydrogen with an organolithium and an organohalosilane to prepare a ligand which is then contacted with an organo alkali metal compound to form a bridged ligand followed by contacting the bridged ligand with an organolithium and a metal halide. The composition is useful for olefin polymerization, hydrogenation, alkene epoxidation, alkene isomerization, and ketone reduction.