Patent ID: 6914112

Claim:
An ethylene-based copolymer [I] characterized by: (a-1) having temperature (T m ) at the maximum peak in the endothermic curve, measured by a differential scanning calorimeter (DSC), of 40 to 90° C., (a-2) the copolymer comprising a component soluble in decane at normal temperature and a component insoluble in decane at normal temperature, and (a-3) the component soluble in decane at normal temperature is present at 1 to 70% by weight and comprises (i) a recurring unit derived from ethylene and (ii) a recurring unit derived from an α-olefin of 4 or more carbon atoms, and in which a content of (i) the recurring unit derived from ethylene is 50 to 75% by mole, wherein the component insoluble at normal temperature of the ethylene-based copolymer contains a recurring unit derived from an α-olefin and cyclo-olefin of 3 or more carbon atoms and a melt flow rate (at 190° C. and a load of 2.16 kg) of 0.1 to 50 g/10 min and has a temperature Tm at the maximum peak in an endothermic curve, measured by differential scanning calorimeter (DSC), is correlated with density (d) by a relationship: Tm <400 ×d −250.