article and process for preparing article from bimodal high density polyethylene (hdpe) resin

摘要

Article and Process for Preparing Article from Bimodal High Density Polyethylene (HDPE) Resin The present invention discloses stoppers and closures produced by injection molding with bimodal high density polyethylene (HDPE) resin, comprising a high polyethylene fraction low molecular weight density, substantially comonomer-free, and a high molecular weight low density polyethylene fraction having a molecular weight distribution of at least 3.5, preferably greater than 4.0, prepared in two reactors linked in series, in the presence of a metallocene-containing catalyst system, the metallocene comprising a bisindenyl or bis-tetrahydrogenated indenyl component.