Process for producing polyolefins

摘要

The polymerization of ethylene or propylene alone or of ethylene and another alpha-olefin is performed using at least the following compounds (A) and (B) : (A) a solid catalyst component prepared from at least (a) a solid-product obtained by the reaction of metallic magnesium, alcohol and at least 0.0001 gram-atom, per 1 gram-atom of the metallic magnesium, of halogen or a halogen-containing compound containing at least 0.0001 gram-atom, per 1 gram-atom of the metallic magnesium, of a halogen atom, and (b) a titanium compound; and (B) an organometallic compound. <IMAGE>