Ethylene/1-Hexene Copolymer Having Improved Long-Term Physical Property Stability and Processibility

Abstract

Provided is an ethylene/1-hexene copolymer satisfying the following conditions, having excellent long-term stability and processability as well as pipe resistance to internal pressure, and being useful for manufacturing high-pressure heating pipes, PE-RT pipes or large-diameter pipes, a molecular weight distribution (Mw/Mn) is 8 to 12, a broad orthogonal co-monomer distribution (BOCD) is 1 to 2, an integral value in the region where Log M is 6 or more in a gel permeation chromatography GPC curve graph having an x-axis of log M and a y-axis of dw/dlogM is 3.0% or more of the total integral value, and a tie molecule fraction is 6.0% or more.

Dependencies are inferred from the claim text.