Manufacture of polyethylenes

Details Manufacture of polyethylenes Manufacture of polyethylenes

C - Chemistry, Metallurgy

08

F

C08F 10/00 (2006.01) C08F 4/602 (2006.01) C08F 10/02 (2006.01) C08F 110/02 (2006.01) C08L 23/04 (2006.01) C08L 23/08 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2379607

Blends of two or more polyethylenes are made by reacting ethylene with an oligomerization catalyst that forms .alpha.-olefins, and two polymerization catalysts, one of which under the process conditions copolymerizes ethylene and .alpha.-olefins, and the other of which under process conditions does not readily copolymerize ethylene and .alpha.-olefins. The blends may have improved physical properties and/or processing characteristics.

L'invention concerne des mélanges d'au moins deux polyéthylènes, produits par réaction de l'éthylène avec un catalyseur d'oligomérisation formant des alpha -oléfines, et deux catalyseurs de polymérisation, l'un d'entre eux copolymérisant l'éthylène et des alpha -oléfines sous les conditions de processus, et l'autre ne copolymérisant pas immédiatement l'éthylène et des alpha -oléfines sous les conditions de processus. Lesdits mélanges peuvent présenter des propriétés physiques améliorées et/ou des caractéristiques de traitement.

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