METHOD FOR PRODUCING AN OLEFIN POLYMER

摘要

A method for producing an olefin polymer, which comprises polymerizing or copolymerizing olefins in the presence of a catalytst comprising: (A) a solid catalyst component obtained by thermally reacting (a1) a magnesium compound of the formula Mg(OR<1>)n(OR<2>)2-n wherein each of R<1> and R<2> which may be the same or different is an alkyl group, an aryl group or an aralkyl group, and n is 2 >/= n >/= 0, (a2) a titanium compound of the formula Ti(OR<3>)4 wherein R<3> is an alkyl group, an aryl group or an aralkyl group and (a3) a silicon compound of the formula Si(OR<4>)4 wherein R<4> is an alkyl group, an aryl group or an aralkyl group and contacting and treating (a) the resulting thermal reaction product with (b) a halogen-containing titanium compound and (c) an electron donative compound, and (B) an organometallic compound of a metal of Groups I-III of the Periodic Table. r