C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/622, 402/638
C08F 4/68 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01)
Patent
CA 1171065
Abstract of the Disclosure A solution process for the preparation of high molecule weight homopolymers of ethylene and copolymers of ethylene and C3 - C12 .alpha.-olefins is disclosed. The process involves feeding monomer, a particular coordination catalyst and hydrocarbon solvent to a reactor, polymerizing the mono- mer at a temperature of 105-320°C and recovering the polymer. The catalyst is obtained by combining solutions of titanium tetrahalide and of organoaluminum compound at a temperature of less than 30°C, heating the resulting admixture to a temperature of 150-300°C for a period of 10 seconds to 10 minutes and combining the thus heat-treated mixture with a solution of an organoaluminum compound. In an embodiment part of the titanium tetrahalide may be replaced with vanadium oxytrihalide.
367952
Hamilton Michael A.
Rees Richard W.
Zboril Vaclav G.
Du Pont Canada Inc.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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