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US 6,632,862 B2Granted
Biodegradable polymer compositions, methods for making same, and articles therefrom
AssigneesThe United States of America as represented by the Secretary of Agriculture, Biotechnology Research and Development Corporation
InventorsJulius L. Willett, William M. Doane, Sterling St. Lawrence, Parvinder Walia
Life of this patent
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Abstract
A polymer composition includes a first component being a hydroxy-functional polymer, a second component being a natural polymer and a third component being a thermoplastic polyester. The first component, second component and third component are compounded to form a polymer composition.
Claims30
A polymer composition comprising:
- a first component being a poly(hydroxy ester ether)(PHEE);
- a second component being a natural polymer;
- and
- a third component being either one of poly (lactic acid) (PLA) and poly(caprolactone)(PCL), wherein the first component, second component and third component are compounded to form the polymer composition.
1 more element
An article comprising:
- a first component being a poly(hydroxy ester ether)(PHEE);
- a second component being a natural polymer;
- a third component being either one of a poly(lactic acid) (PLA) and poly(caprolactone)(PCL), wherein the first component, second component and third component are compounded to form a polymer composition which is processed by at least one from a group comprising pelletizing, extruding, molding, casting, and stamping into the article.
A method of making a polymer composition, said method comprising the steps of:
- providing a first component being a poly(hydroxy ester ether)(PHEE);
- providing a second component being a natural polymer;
- providing a third component being either one of a poly(lactic acid)(PLA) and poly(caprolactone)(PCL);
- and
- compounding the components to form a polymer composition.
2 more elements
Dependencies are inferred from the claim text.