Supported catalyst for 1-olefin and 1,4-diolefin copolymerization

Claim 1

A process for polymerizing ethylene and 1,4-hexadiene comprising: (i) contacting ethylene and 1,4-hexadiene with a supported catalyst system comprising the reaction product of a metallocene and methylalumoxane deposited on an inorganic porous support, said metallocene being of the formula: ##STR3## wherein R 2 bridging group is a linear, branched or cyclic alkylene group having from one to six carbon atoms, an alkyl substituted silaalkylene group having from one to two silicon atoms in place of carbon atoms in the bridge, or a Si 1 -Si 2 alkyl substituted silaalkylene group; "b" is a number 0 to a; each R 1 independently is a linear or branched hydrocarbyl radical having from one to twenty carbon atoms; "z" is an integer number from 0 to 2; and each X is a hydride, halide, oxygen bridge or a metallocene dimer, or a hydrocarbyl radical; (ii) reacting said ethylene and 1,4-hexadiene in the presence of said catalyst to produce a polymer having a diene content of from about 0.1 to about 10 mole %; and (iii) recovering said polymer.