High shrinkage propylene-based films
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United States of America Patent
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Jun 19, 2012
Grant Date -
Mar 17, 2011
app pub date -
May 27, 2009
filing date -
Jun 27, 2008
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Abstract
A heat-shrinkable film. The film comprising at least one layer having at least one propylene-based polymer comprising 60 wt % to 98 wt % propylene derived units and 2 wt % to 40 wt % one or more other alpha olefins, the propylene-based polymer having: a triad tacticity of 70% or more, a heat of fusion of less than 80 J/g, a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000. The layer also comprises at least one thermoplastic resin and at least one hydrocarbon resin.
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