ETHYLENE COPOLYMERS, PROCESS FOR THEIR PREPARATION, THEIR USE FOR THE MANUFACTURE OF FILMS AND FILMS SO PRODUCED

摘要

Copolymers of ethylene and higher 1-olefins which are suitable for the manufacture of thin films, are preferably prepared in a two-step process, the first step yielding a polymer having a high molecular weight, the second step giving a polymer having a low molecular weight. The films obtained from these copolymers have improved mechanical properties as compared to films manufactured from known corresponding raw materials. The mechanical properties are furthermore uniform in longitudinal and in transverse direction.