Elastomeric copolymers of ethylene and propylene, the...

Details Elastomeric copolymers of ethylene and propylene, the... Elastomeric copolymers of ethylene and propylene, the...

C - Chemistry, Metallurgy

08

F

402/622, 402/641

C08F 210/06 (2006.01) C08F 210/16 (2006.01) C08L 23/08 (2006.01) C08L 23/12 (2006.01)

Patent

CA 1146699

Abstract The invention concerns elastomeric copolymers of 34 to 67 wt% ethylene and 33 to 66 wt% propylene. The copolymers are characterised in that 60% at least of the units derived from propylene are disposed in sequences of at least three successive units and that their fusion enthalpy, as measured after a given heat treatment, is lower than 15 cal/g (calories per gram) and in most cases is from 5 to 10 cal/g. The copolymers of the invention can be used in particular for the production of isotactic poly- propylene compositions.

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