C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/630, 402/633
C08F 4/42 (2006.01) B01J 31/02 (2006.01) B01J 31/12 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1087596
ABSTRACT OF DISCLOSURE A process for the preparation of catalysts for the polymerization of olefines, e.g. ethylene and propylene. This process comprises essentially the two following steps: (1) A compound (A) of an element selected from groups Ia, Ib, IIa, IIb, IIIa, IIIb, VIa and VIIb of the periodic Table of Elements is heated and milled under the protection of an inert gas with an organic acetoxy compound; then the volatile portions of the mixture are eliminated by distillation. (2) The solid resulting from the first step is dissolved or dispersed in a non-polar hydrocarbon and an activator (B) is added, mixed and heated with said solution; or dispersion until a homogeneous solution or dispersion of activated catalyst is obtained. (B) is selected from compounds of elements IVa, IVb and Vb of the Periodic Table. This catalyst is used in admixture with a polymer- ization promoter (C) selected from organo-metallic additives, e.g. aluminum-organic compounds for the polymerization of olefines at relatively low temperatures and pressures. Polymerization activities which may reach about 500,000 have been measured.
278206
Battelle Memorial Institute
Marks & Clerk
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