POLYMERIZATION OF 1-VINYLCYCLOHEXENE IN THE PRESENCE OF GROUP-4 METALLOCENES - MAO CATALYSTS

1-Vinylcyclohexene was polymerized in the presence of several homogene ous catalytic systems consisting of methylaluminoxane and group 4 meta llocenes such as CpTiCl3, [isopropyl(cyclopentadienyl) (1-fluorenyl)]Z rCl2,rac-[ethylenebis(1-indenyl)] ZrCl2, (CH3)(2)Si(Cp)(2)ZrCl2, CpZrC l3. The structure of the polymers depends on the catalyst. In fact, wi th CpTiCl3, [isopropyl(cyclopentadienyl) (l-fluorenyl)]ZrCl2 and rac[e thylenebis-(1-indenyl)]ZrCl2 the polymers are chemo-, regio-and stereo regular with 1,4 cis, 1,4 trans and 1,2 isotactic structure, respectiv ely.