Solid state modification of propylene polymers

Details Solid state modification of propylene polymers Solid state modification of propylene polymers

C - Chemistry, Metallurgy

08

F

C08F 8/00 (2006.01)

Patent

CA 2635952

A process for improving the melt characteristics of propylene-ethylene random block and impact copolymers is provided. The process involves contacting a powder of the copolymer with a low level of free radical initiator followed by heating at a temperature below the melting point of the copolymer and above the free radical initiation temperature.

L'invention concerne un procédé d'amélioration des caractéristiques à l'état fondu de copolymères de propylène-éthylène séquencés, aléatoires et à impact. Le procédé comprend la mise en contact d'une poudre du copolymère avec une faible quantité d'amorceur radicalaire libre, puis le chauffage à une température inférieure au point de fusion du copolymère et supérieure à la température d'amorçage du radical libre.

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