Components and catalysts for the polymerization of olefines

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

C - Chemistry, Metallurgy

07

C

252/107, 402/645

C07C 2/08 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1174225

ABSTRACT OF DISCLOSURE Catalyst-forming components and catalysts for the polymerization of olefins based on said components are dis- closed. The catalysts comprise the reaction product of: (a) an Al alkyl compound; (b) a silicon compound containing at least one Si-OR or Si-OCOR or Si-NR2 bond, R being a hydrocarbyl radical; and (c) a solid comprising, as essential support, a Mg dihalide in active form and, supported thereon, a Ti halide or a halo-Ti-alcoholate or said halogenated Ti compound and a silicon compound as defined in (b) in a molar ratio with the supported Ti compound from 1.0 mole to 5 moles of silicon compound per mole of Ti compound.

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