Components and catalysts for the polymerization of the olefins

Details Components and catalysts for the polymerization of the olefins Components and catalysts for the polymerization of the olefins

C - Chemistry, Metallurgy

08

F

C08F 4/76 (2006.01) C08F 4/642 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2088525

ABSTRACT The present invention relates to spherical solid components of catalysts for the polymerization of olefins comprising, supported on a magnesium dihalide in active form, a titanium compound containing at least one Ti-halogen bond and one OR group, said OR group being bonded to Ti in an amount such that the OR/Ti molar ratio is greater than or equal to 0.5; optionally the component also comprises an electron donor compound. The spherical solid components of the invention are characterized by having a porosity comprised between 0.35 and 0.7 cm3/g and by a pore size distribution such that at least 50% of the porosity is due to pores having an average radius greater than 800 A. (ZZ5059-ES-01)

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