Biodegradable moldable products and films comprising blends of starch esters and polyesters
AssigneeEvercorn, Inc.
InventorsSteven Bloembergen, Ramani Narayan
Life of this patent
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Abstract
Biodegradable moldable products and films prepared from a compatible blend containing a biodegradable, hydrophobic, starch ester and a biodegradable polyester, and optionally a biodegradable and miscible plasticizer and/or a compatible filler.
Claims13
A biodegradable moldable product or film product prepared from a compatible blend comprising a biodegradable, hydrophobic, water repellant, amorphous, starch ester having a degree of substitution of about 1.0 to about 2.5 DS and a biodegradable polyester selected from the class consisting of poly (.epsilon.-caprolactone) (PCL), poly(lactic acid) or polylactide (PLA), poly(glycolic acid) or polyglycolide (PGA), bacterial and synthetic poly(.beta.-hydroxybutyrate-co-.beta.-hydroxyvalerate) (PHB/V) and poly(.beta.-hydroxyalkanoates) (PHA).
A moldable composition comprising a compatible thermoplastic blend of a biodegradable, predominantly amorphous, hydrophobic, water repellant, starch ester having a degree of substitution (DS) of about 1.0 to about 2.5 DS and a biodegradable polyester is selected from the group consisting of poly(.epsilon.-caprolactone) (PCL), poly(lactic acid) or polylactide (PLA), poly(glycolic acid) or polyglycolide (PGA), bacterial and synthetic poly(.beta.-hydroxybutyrate-co-.beta.-hydroxyvalerate) (PHB/V), poly(.beta.-hydroxyalkanoates) (PHA), and aliphatic biodegradable polyesters.
Dependencies are inferred from the claim text.