WERKWIJZE TER BEREIDING VAN FIJN VERDEELDE COPOLYMEREN VAN ETHEEN EN ONVERZADIGDE ESTERS.

摘要

A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 mu m which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing 3 to 10 carbon atoms, heating the same with a mixture of said ketone up to a temperature above the softening point of the polymer and thereafter cooling the same.