Catalyst components and catalysts for polymerizing olefins

Details Catalyst components and catalysts for polymerizing olefins Catalyst components and catalysts for polymerizing olefins

C - Chemistry, Metallurgy

08

F

252/105

C08F 4/64 (2006.01) C08F 4/02 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1131202

ABSTRACT OF DISCLOSURE Catalyst-forming components are prepared from (a) a halogenated Ti compound containing at least a Ti-halogen bond; (b) an electron-donor compound free of active hydrogen atoms; and (c) the solid product of the reaction between at least one electron-donor compound containing active hydrogen atoms and a Mg dihalide or a complex thereof with an electron-donor compound free of active hydrogen atoms, obtained by de- composing organic Mg compounds containing at least one Mg-R or Mg-OR group, in which R is an alkyl, aryl, cycloalkyl or alkenyl radical hav- ing 1 to 20 carbon atoms, by means of a halogen ating agent different from (a). Catalysts for polymerizing olefins and prepared by mixing the aforesaid catalyst-forming components with an organometallic compound of Al are also disclosed.

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