Screw cap composition based on multimodal polyethylene

摘要

Screw cap comprises a composition based on a multimodal ethylene polymer having a standard density (SD) greater than 950 kg/m<3> and a melt flow index MI2 of less than 10 g/10 minutes. The multimodal ethylene polymer comprises 35-65 wt.% ethylene polymer having an SD of more than 965 kg/m<3> and MI2 of ≥ 10 g/10 minutes, and 35-65 wt.% copolymer of ethylene and 3-12C alpha -olefin(s). Screw cap comprises a composition based on a multimodal ethylene polymer having a standard density (SD) greater than 950 kg/m<3> and a melt flow index MI2 of less than 10 g/10 minutes. The multimodal ethylene polymer comprises 35-65 wt.% ethylene polymer having an SD of more than 965 kg/m<3> and MI2 of ≥ 10 g/10 minutes, and 35-65 wt.% copolymer of ethylene and 3-12C alpha -olefin(s). The copolymer of ethylene and at least one alpha -olefin has an MI2 of less than 10 g/10 minutes and an alpha -olefin content of 0.1-5 mol%.