POLYOLEFIN AND PREPARATION METHOD THEREOF

摘要

A polyolefin is provided to ensure excellent workability and a melt flow rate ratio(MFRR) of the range suitable for processing and to produce a blow molding product due to excellent moldability, impact strength, tensile strength, especially, environmental stress crack resistance(ESCR), Full Notch Creep Test(FNCT) and die swell property. A polyolefin is characterized in that (i) a density is 0.93 ~ 0.97 g/cm^3, (ii) a BOCD(Broad Orthogonal Co-monomer Distribution) index is 1 ~ 5; (iii) the distribution of molecular weight (average molecular weight / number average molecular weight) is 4 ~ 10. The melt flow index (190°C, 2.16kg loading condition) of polyolefin is 0.05 ~ 2g / 10 minute.