Catalyst support, process for obtaining a catalyst support by polymerizing one or more alpha-olefins, catalyst usable for the polymerization of alpha-olefins, and, process for the polymerization of alpha-olefins by means of a catalytic system ( T)

摘要

Catalyst support containing an alpha -olefin polymer in the form of particles of mean size from 5 to 350 mu m in which the pore volume produced by the pores of radius from 1000 to 75,000 ANGSTROM is at least 0.2 cm3/g. Catalyst usable for the polymerisation of alpha -olefins, including a compound containing at least one transition metal belonging to groups IIIb, IVb, Vb and VIb of the Periodic Table, bound into or onto this support.