Toughening Polylactic Acid With Polyhydroxyalkanoates
First Claim
Patent Images
1. A composition comprising a polymer blend of polylactic acid (PLA) and a polyhydroxyalkanoate polymer, copolymer or blend thereof (PHA), wherein the PHA has a Tg between about −
- 5°
C. and about −
50°
C.
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Abstract
Compositions of polymer blends of polylactic acid (PLA) and polyhydroxyalkanoate are described. In certain embodiments, the PHA is a multiphase copolymer blend having one phase a fully amorphous phase with a glass transition temperature of below 20° C. and is between about 5 to about 45% of the total PHA. Methods of making the compositions of the invention are also described. The invention also includes articles, films and laminates comprising the compositions.
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Citations
38 Claims
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1. A composition comprising a polymer blend of polylactic acid (PLA) and a polyhydroxyalkanoate polymer, copolymer or blend thereof (PHA), wherein the PHA has a Tg between about −
- 5°
C. and about −
50°
C. - View Dependent Claims (28, 38)
- 5°
-
2. A composition comprising a polymer blend of polylactic acid (PLA) and a polyhydroxyalkanoate polymer, wherein the PHA is a multiphase copolymer blend of PHA, having an amorphous rubber phase with a Tg between about −
- 15°
C. and about −
40°
C. and is between about 5 weight % to about 45 weight % of the total PHA in the composition. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37)
- 15°
Specification