Random copolymer

Details Random copolymer Random copolymer

C - Chemistry, Metallurgy

08

F

402/403, 402/418

C08F 232/06 (2006.01) C08F 210/02 (2006.01) C08G 61/08 (2006.01) C08L 65/00 (2006.01)

Patent

CA 1223399

Abstract of the Disclosure: A random copolymer comprising ethylene, a 1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene and optionally an alpha-olefin having at least three carbon atoms or cycloolefin. The mole ratio of polymerized units from the 1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydro- naphthalene to polymerized units from ethylene is from 3:97 to 95:5 and the 1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octa- hydronaphthalene is incorporated in the polymer chain as polymerized units without ring-opening. The copolymer is prepared by copolymerizing ethylene with the 1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a- octahydronaphthalene in a hydrocarbon medium in the pre- sence of a catalyst formed from a vanadium compound and an organoaluminum compound which are soluble in the hydro- carbon medium. The copolymer has excellent transparency and a well balanced combination of heat resistance, heat aging resistance, chemical and solvent resistance, dielectric properties and mechanical properties such as rigidity.

473143

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