Single-site catalysts Syndiotactic polypropylene and polyethylene containing polyolefin blends, methods and articles made from these blends

摘要

The present invention is based on the finding that the specific syndiotactic polypropylene content in weight percent relative to the total weight of both polyethylene and syndiotactic polypropylene contained in the formulation_ppAt least one single-site catalytic polyethylene and at least one single-site catalytic syndiotactic polypropylene, corresponding to the following: [Wherein, is up to 1.40, MI2_PEIs the melt flow index of polyethylene as measured according to ISO 1133 at 190C under a load of 2.16 kg, MFI_PPIs the melt flow index of syndiotactic polypropylene as measured according to ISO 1133 at 230C under a load of 2.16 kg.The blend exhibits improved impact properties at temperatures below RTI ID = 0.0 0 C. /RTI The present invention also relates to a process for preparing such a formulation as well as an article made from these formulations.