Polyethylene resin composition for rotational molding and rotational molded product using the composition

摘要

A polyethylene resin composition for rotational moulding and a rotational moulded product using a composition is provided. The composition comprises an ethylene-á-olefin copolymer (A) having a density of 0.880-0.093 g/cm3 and a melt index (MFR) of 0.01-5.0 g/10 min and an ethylene homopolymer or an ethylene-á-olefin copolymer (B) having a density of 0.931-0.974 g/cm3 and MFR of 0.5-20 g/10 min, wherein the weight gain ((A)/(B)) of component (A) to component (B) is in the range of 10/90 to 50/50, and a blend consisting of these components (A) and (B) has a density of 0.920-0.960 g/cm3 and MFR of 1-10 g/10 min. The component (A) is a copolymer prepared by the use of a metallocene type olefin polymerisation catalyst, and component (B) is a copolymer prepared by the use of a metallocene type or Ziegler type olefin polymerisation catalyst.