Patent ID: 6632911
Filing Date: 2003-10-14
Classification: C08F

Abstract:
An ethylene/&agr;-olefin copolymer which is a copolymer of ethylene with an &agr;-olefin having 3 to 20 carbon atoms;wherein the ethylene/&agr;-olefin copolymer satisfies the following physical properties (a) to (d): (a) having a density of 0.900 to 0.965 g/cm3; (b) having a melt index, MI, at 190Â° C., under a 2.16 kg load, of 0.01 to 100 g/10 min; (c) in a chromatogram using a Rayleigh ratio obtained by extrapolating GPC-MALLS data at a scattering angle of 0Â°, showing an average value of Mc, {overscore (Mc)}, obtained by a five-point measurement method, of 0.5% or more and a standard deviation  of an average of 35% or less; wherein Mc stands for a chromatographic area ratio of components having a molecular weight of 1,000,000 or more calculated on the basis of said five-point measurement; and (d) having a weight fraction, W30, of the portion eluted below 30Â° C. in a CFC measurement of 1% by weight or less.