BIODEGRADABLE IMPACT-MODIFIED POLYMER COMPOSITIONS
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Aug 29, 2013
filing date -
Jun 13, 2008
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Abstract
The invention relates to an impact-modified bio-degradable polymer composition having large particle size impact modifiers dispersed in a continuous biodegradable polymer phase. The impact modifiers have a core-shell morphology and may have average sizes of greater than 250 nm. The impact-modified composition has good impact properties and low haze, The biodegradable polymer is preferably a polylactide or polyhydroxy butyrate. The composition comprises 30-99.9 weight percent of degradable polymer and 0.1 to 15 weight percent of one or more impact modifiers.
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