C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/377, 402/381
C08F 10/00 (2006.01) C08F 4/66 (1980.01)
Patent
CA 1120910
ABSTRACT OF DISCLOSURE Catalyst components for mixing with organometallic compounds of Groups I, II and III of the Periodic Table, for polymerizing olefins e.g. alpha-olefins of three or more carbon atoms, ethylene and mixtures thereof with alpha-olefins and/or diolefins or multiolefins, consist essentially of the product obtained by successively reacting (A) A Mg compound (halide, alcoholate, haloalcoholate, carboxy late, oxyde, hydroxyde, salt of an inorganic oxygen contain ing acid, Grignard reagent or reaction product of a Grignard reagent with a silicon compound), optionally in the form of a complex with an electron-donor compound, with (B) a compound having general formula [MOx (OR)y-]n, wherein M = Ti, V or Zr, R = an alkyl, an aryl or a cyaloalkyl con- taining 1 to 20 carbon atoms, x may be zero, y is an integer from 1 to 6 (inclusive), and with (C) a compound, other than the aluminum halide , exerting on component (B) a halogenating action and a reducing action, or a mixture of a halogenating compound with a reducing substance.
303783
Cuffiani Illaro
Zucchini Umberto
Montedison S.p.a.
Stewart & Kolash Ltd
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