Elastomeric copolymer of ethylene with .alpha.-olefins

Details Elastomeric copolymer of ethylene with .alpha.-olefins Elastomeric copolymer of ethylene with .alpha.-olefins

C - Chemistry, Metallurgy

08

F

C08F 210/16 (2006.01) C08F 210/18 (2006.01)

Patent

CA 2111436

2111436 9319107 PCTABS00025 Copolymers of ethylene with propylene and/or higher .alpha.-olefins and, optionally, minor proportions of a diene or polyene, which display the following properties: cristallinity content, measured as fusion enthalpy, lower than 20 J/g; solubility in pentane at 25 ·C higher than 90%; content of propylenic units or units deriving from said .alpha.-olefins in the form of triads comprised between 4 and 50% of the total content of propylene or said .alpha.-olefins, with at least 70% of said triads having an isotactic structure; product of the monomer reactivity ratios r1.r2 comprised between 0.4 and 1; inherent viscosity higher than 1.5 dl/g.

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