Process for polymerisation of alpha-mono olefins, supported catalyst therefor and method of preparing said catalyst.

摘要

Olefin polymers having low metal and chloride residues and larger polymer particle size than polymer particles produced by an unsupported catalyst can be obtained if there is used as the catalyst the combination of an organo-aluminium compound and the product of (1) reducing a transition metal compound with an organomagnesium compound in the presence of a support material selected from the group consisting of silica, alumina, or mixtures thereof and (2) reacting excess organomagnesium compound with a deactivation agent, such as hydrogen chloride.