Catalyst for olefin polymerization and method for producing olefin polymers using the same

摘要

A catalyst for olefin polymerization comprising the following Components (A) to (D), Component (D) being optional, in combination: (A): a solid catalyst component comprising Ti, Mg, a halogen and an electron donor; (B): an organoaluminum compound; (C): a sulfonic ester represented by R<4>SO3R<5> (R<4> and R<5>: hydrocarbon group); and (D): an organosilicon compound. The electron-donating compound comprised in Component (A) is specified in one aspect of the invention. Olefin polymers having excellent moldability and processability and extremely high crystallinity can be produced in high yield when the above catalyst is used.