Ethylene/alpha-olefins copolymers

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 210/16 (2006.01) C08F 4/44 (2006.01) C10L 1/14 (2006.01) C10L 1/16 (2006.01) C10M 143/00 (2006.01) C08F 4/619 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01)

Patent

CA 2224673

Ethylene copolymers with alpha-olefins utilizable as additives to increase the properties of middle distillates at low temperatures, obtainable by polymerization in the presence of catalysts comprising the reaction product between: 1) a bis-cyclopentadienyl derivative having the general formula: (Cp1Cp2)-M-(L2L3) containing groups with oxygen bound to the transition metal, wherein M is a metal from the IIIb group to the IIb group or of the lanthanides series of the periodic table of the elements; 2) a co-catalyst chosen from alumoxanes or boranes.

Copolymères d'éthylène avec des alpha-oléfines utilisables comme additifs pour rehausser les propriétés des distillats intermédiaires à basse température, que l'on peut obtenir par polymérisation en présence de catalyseurs comprenant le produit de la réaction entre : 1) un dérivé du bis-cyclopentadiényle ayant la formule générale : (Cp1Cp2)-M-(L2L3) contenant des groupes ayant un oxygène lié au métal de transition, où M est un métal du groupe IIIb à IIb ou de la série des lanthanides du tableau périodique des éléments; 2) un co-catalyseur choisi parmi les alumoxanes ou les boranes.

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