Olefin-based polymer with excellent processability

An olefin-based polymer,

• wherein the olefin-based polymer is a copolymer of ethylene and an alpha-olefin-based comonomer, and wherein the olefin-based polymer has:
• a molecular weight distribution (Mw/Mn) of 5 to 30;
• a weight average molecular weight of from 100,000 to 160,000 g/mol;
• a melt flow rate ratio (MFR21.6/MFR2.16) of 35 to 200, which is measured at 190° C. in accordance with ASTM1238;
• a slope of −0.8 to −0.2 in a curve of complex viscosity (η*[Pa·s]) versus frequency (ω[rad/s]);
• and
• a CI (Co-monomer Incorporation) Index of 0.5 to 5, the CI index represented by the following Equation 1:
• CI Index=SCB content at high molecular weight side−SCB content at low molecular weight side/SCB content at low molecular weight side [Equation 1]
• wherein the SCB (Short Chain Branch) content means a content (unit:
• branch/1,000 C) of side chain branches of 2 to 7 carbon atoms per 1,000 carbons, and
• the SCB content at low molecular weight side and the SCB content at high molecular weight side mean SCB contents at the left border (SCB content at low molecular weight side) and the right border (SCB content at high molecular weight side) of centered 60% area excluding 20% of the left and right ends in the total area of a molecular weight distribution curve which is obtained by plotting a log value (log M) of a molecular weight (M) of the olefin-based polymer on the x-axis, and a molecular weight distribution (dwt/dlog M) with respect to the log value on the y-axis.