Heat treatment of ziegler-natta catalysts to increase...

Details Heat treatment of ziegler-natta catalysts to increase... Heat treatment of ziegler-natta catalysts to increase...

C - Chemistry, Metallurgy

08

F

C08F 4/64 (2006.01) C08F 2/04 (2006.01) C08F 10/00 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2234189

The present invention provides a novel catalyst preparation method to substantially increase the polymer molecular weight in the high temperature solution process. The method utilizes mixing and heating a mixture of Aluminum alkyl/dialkyl Magnesium with a chlorinating compound, prior to reacting with Transition metal and a second Aluminum alkyl activator. This novel catalyst preparation method is designed to significantly increase the molecular weight in ethylene - alpha-olefin copolymerization by about 80% without any significant loss in activity.

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