POLYETHYLENE RESIN COMPOSITION

PURPOSE:To obtain the title composition excellent in low-temperature impact resistance, heat resistance, fuel oil resistance, etc., by mixing four specified polyethylene resins having different properties, different compositions, etc. CONSTITUTION:A high-density polyethylene resin (A) having a density of 0.935g/cm or above and a melt index of 0.01g/10min or above, a modified polyethylene resin (B) derived by grafting an unsaturated carboxylic acid (derivative) onto component A, a low-density linear polyethylene resin (C) having 5-30 short-chain branches per 1000 carbon atoms in the main chain, a density of 0.91-0.935g/cm , a melt index of 0.1-50g/10min and a melting point as determined by differential scanning calorimetry of 115-130 deg.C, and an ultralow-density linear polyethylene (D) having 18-60 shortchain branches per 1000 carbon atoms in the main chain, a density of 0.89-0.91g/cm , a melt index of 0.1-30g/10min and a melting point as determined by differential scanning calorimetry of 110-125 deg.C are mixed together in such amounts that B/(A + B) is 0.1wt.% or above, C/(A + B + C) is 2.5-75wt.%, and D/(A+B+C+D) is 5-40wt.%.