Polypropylene resin composition and film thereof
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United States of America Patent
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Jan 25, 2011
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N/A
app pub date -
Mar 10, 2003
filing date -
Mar 14, 2002
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Abstract
α-olefin, in (B-1) the amount of units derived from propylene is more than 50% to 85%, and in (B-2) the amount of units derived from propylene is 15 to 50%, the molecular weight distribution is 3.0 or less, and blockness is 1.3 or less; in which composition the amount of (B-2) is 3% or more, and the ratio of the limiting viscosity of (B-1) to the viscosity of (A). is 1.5 or less, and the ratio of the limiting viscosity of (B-1) to the viscosity of (B-2) is 0.8 or more.
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