Ethylene/.alpha.-olefin copolymer and film made thereof
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United States of America Patent
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Oct 14, 2003
Grant Date -
N/A
app pub date -
Nov 3, 2000
filing date -
Nov 5, 1999
priority date (Note) -
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Abstract
An ethylene/.alpha.-olefin copolymer having a density of 0.900 to 0.965 g/cm.sup.3 ; having an MI of 0.01 to 100 g/10 minutes; in a chromatogram with the use of Rayleigh ratio obtained by extrapolating GPC-MALLS data at a scattering angle of 0.degree., showing an average Mc obtained by measuring five times of 0.5% or more and a standard deviation <.sigma.> from the average of 35% or less, wherein Mc stands for the chromatographic area ratio of the components having molecular weight of 1,000,000 or more calculated on the basis of the above measurement; and having a W30 (weight fraction of the portion eluted below 30.degree. C.) in CFC measurement of 1 (% by weight) or less; and a film thereof.
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