Ethylene-alpha-olefin polymers, processes and uses

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 210/16 (2006.01) C08F 8/00 (2006.01) C08F 8/50 (2006.01) C10M 107/02 (2006.01) C10M 107/04 (2006.01) C10M 107/06 (2006.01) C10M 107/08 (2006.01) C10M 107/10 (2006.01) C10M 107/12 (2006.01) C10M 171/04 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/02 (2006.01) C08F 210/06 (2006.01)

Patent

CA 2294070

A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.

L'invention concerne une nouvelle série de copolymères et de terpolymères, utiles en tant qu'huiles de base pour lubrifiants synthétiques, que l'on produit en polymérisant de l'éthylène, une alpha-oléfine et éventuellement un troisième monomère comprenant une alpha-oléfine à 3 à 20 atomes de carbone, en présence d'un catalyseur de combinaison comprenant un composé de métal de transition du groupe IVB du tableau périodique et un aluminoxane. Le copolymère ou le terpolymère peuvent être encore traités par craquage thermique pour la production de polymères craqués nouveaux, éventuellement hydrogénés. Les copolymères ou terpolymères sont utiles comme huiles de base pour huiles lubrifiantes et produits de consommation.

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