【発明の名称】オレフィン重合立体特異性触媒

Japanese Patent JP2676449

B2

A good activity and stereospecifity have been achieved by a catalyst system intended for the polymerization of olefins comprising a procatalyst based on a titanium compound, an organoaluminium cocatalyst and an organosilane compound, the organosilane compound having the following formula (I) in which R is a lower alkyl, R min is an alkyl, R sec is a substituent donating electrons, n = 1, 2, or 3, m = 0, 1, or 2, and n + m