Liquid ethylene-type random copolymer, process for...

Details Liquid ethylene-type random copolymer, process for... Liquid ethylene-type random copolymer, process for...

C - Chemistry, Metallurgy

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253/128, 402/640

C08F 210/16 (2006.01) C08F 4/60 (2006.01) C08F 8/04 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 1263498

Abstract of the Disclosure: A liquid ethylene-type random copolymer, charac- terized in that (a) it has an ethylene unit content of 10 to 85 mole% and an alpha-olefin unit content of 15 to 90 mole%, (b) it has a low molecular weight, (c) it has a narrow molecular weight distribu- tion, (d) the dispersion of the ethylene units and alpha-olefin units in the polymer chain is in the advanced state, and (e) the directions of bonding of the alpha-olefin units in the polymer chain are nearly the same. The copolymer is prepared by copolymerizing ethylene and an alpha-olefin having 3 to 20 carbon atoms in the presence of a catalyst comprising a compound of a transition metal of Group IVb of the periodic table and an aluminoxane. The copolymer is very useful as a synthetic lubricant oil.

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