Shear-thinning ethylene/.alpha.-olefin and ethylene/.alpha.-olefin/diene monomer interpolymers that do not include a traditional branch-inducing monomer such as norbornadiene are prepared at an elevated temperature in an atmosphere that has little or no hydrogen using a constrained geometry complex catalyst and an activating cocatalyst.

i interpolymers d'assottigliamento del monomero di ethylene/.alpha.-olefin/diene e di ethylene/.alpha.-olefin che non includono un monomero d'induzione tradizionale quale norbornadiene sono preparati ad una temperatura elevata in un atmosfera che ha poco o nessun idrogeno usando un catalizzatore complesso costretto della geometria e un cocatalyst d'attivazione.

 
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