Olefin based polymer having excellent processability

1. An ethylene-alpha olefin copolymer having:

a weight average molecular weight of 50,000 to 150,000,

a molecular weight distribution (Mw/Mn) of 2 to 5,

a density of 0.910 to 0.940 g/cm 3 ,

MFRR (MI 10 /MI 2.16 ) of 10 to 20, and

a C 2 value of −0.30 to −0.60 when a graph of complex viscosity (η*[Pa·s]) at the frequency (ω [rad/s]) of 0.05 to 500 rad/s is fitted to the following Equation 1:

y=c 1 x c 2   [Equation 1]

and a plateau delta value in Van Gurp Palmen plot satisfies the following Equation 2:

−0.02×(Mw/10 4 )+0.76≦plateau delta≦−0.02×(Mw/10 4 )+1.36.  [Equation 2]

2. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the C 1 is 30,000 to 300,000.

3. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the weight average molecular weight is 90,000 to 125,000.

4. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the molecular weight distribution is 2.5 to 3.5.

5. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the density is 0.915 to 0.930 g/cm 3 .

6. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the C 2 is −0.30 to −0.55.

7. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the plateau delta value satisfies the following Equation 2-1:

−0.02×(Mw/10 4 )+0.91≦plateau delta≦−0.02×(Mw/10 4 )+1.26.  [Equation 2-1]

8. The ethylene-alpha olefin copolymer according to claim 1 ,

wherein the alpha olefin is one or more selected from the group consisting of propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, and 1-hexadecene.