Abstract The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an alpha -olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that (A) the ethylene copolymer has a density (d) of 0.86 to 0.95 g/cm3; (B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190 DEG C. and a load of 2.16 kg; (C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relation log MT>-0.66 log MFR+0.6; and (D) the temperature (T) at which the exothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relation T<400d-250.
An ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an α-olefin having 3 to 20 carbon atoms, which is characterized in that: (A) the ethylene copolymer has a density (d) of 0.87 to 0.94 g/cm 3 ; (B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190° C. and a load of 2.16 kg; (C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relation log MT>-0.66 log MFR+0.6; and (D) the temperature (T) at which the endothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relation T<400(d)-250.
Claim 2
Dependent Claim
122 words
An ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an α-olefin having 3 to 20 carbon atoms, which is characterized in that: (A) the ethylene copolymer has a density (d) of 0.87 to 0.94 g/cm 3 ; (B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190° C. and a load of 2.16 kg; (C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relation log MT>-0.66 log MFR+0.6; and (D) the temperature (T) at which the endothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relation T<400(d)-250.
Claim 3
Dependent Claim
45 words
The ethylene copolymer as claimed in claim 1, wherein the ethylene copolymer comprises the constituent units derived from ethylene in an amount of 70 to 96% by weight, and the constituent units derived from an α-olefin in an amount of 4 to 30% by weight.