ETHYLENPOLYMERTEILCHEN, HERSTELLUNGSVERFAHREN DAFÜR UND FORMKÖRPER UNTER VERWENDUNG DAVON

摘要

The present invention provides ethylene polymer particles obtained by a solid phase method such as solid phase drawing molding and capable of providing a molded article with high strength. The ethylene polymer particles have an intrinsic viscosity [·] of 5 dl/g to 30 dl/g, a degree of crystallinity of as high as 80% or more, and a specific shape on the surface of the particles. The ethylene polymer particles can be obtained, for example, by carrying out polymerization of olefins including ethylene using an olefin polymerization catalyst containing a solid titanium catalyst component including magnesium, halogen and titanium under specific conditions.