Polymer blends with improved rheology and improved unnotched impact strength

This invention relates to a blend of biodegradable polymers comprising: (A) about 70% to about 80% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0< DEG >C, (B) about 30% to about 20% by weight of at least one rigid biodegradable polymer...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HALE WESLEY R.,TANNER CANDACE M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	This invention relates to a blend of biodegradable polymers comprising: (A) about 70% to about 80% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0< DEG >C, (B) about 30% to about 20% by weight of at least one rigid biodegradable polymer (B) having a glass transition greater than about 10< DEG >C; said percentages being based on the total weight of the polymer blend; wherein said polymer blend has a notched Izod impact strength according to ASTM D256 of at least 7.5 fl-lbs/in.