Patent ID: 7687579

Claim:
An ethylene (co)polymer composition (C3-1) comprising: an ethylene (co)polymer (A3) being either an ethylene homopolymer or a copolymer of ethylene and an α-olefin of 3 to 20 carbon atoms, wherein (i A3 ) the melt tension (MT (g)) at 190° C. and the swell ratio (SR) calculated from the strand diameter extruded at 190° C. satisfy the relation; log(MT)>12.9−7.15×SR, (ii A3 ) the intrinsic viscosity ([η] (dl/g)) measured at 135° C. in decalin and the melt flow rate (MFR (g/10 minutes)) measured under 2.16 kg load at 190° C. satisfy the relations; [η]>1.85×MFR −0.192 in the case of MFR<1 and [η]>1.85×MFR −0.213 in the case of MFR≧1, and (iv A3 ) the number average molecular weight (Mn), the weight average molecular weight (Mw), and the Z average molecular weight (Mz) measured by gel permeation chromatography satisfy the relations; Mz/Mw≧ 7/(1−5.5/( Mw/Mn )), and Mw/Mn> 5.5; and another un-modified polymer (B3).