Packaging thermoplastics from lactic acid

Details Packaging thermoplastics from lactic acid Packaging thermoplastics from lactic acid

C - Chemistry, Metallurgy

08

L

C08L 67/04 (2006.01) A61L 15/26 (2006.01) A61L 15/62 (2006.01) C08G 63/08 (2006.01) C08J 3/18 (2006.01) C08J 5/18 (2006.01) C08K 5/09 (2006.01) C08K 5/101 (2006.01) C08L 21/00 (2006.01) C08L 53/00 (2006.01) C08L 57/00 (2006.01) C08L 67/00 (2006.01) C08L 101/00 (2006.01) C09D 167/04 (2006.01) C09J 167/04 (2006.01) D21H 17/53 (2006.01)

Patent

CA 2091185

2091185 9204413 PCTABS00011 A first general embodiment includes environmentally biodegradable compositions of poly(lactic acid) intimately plasticized with derivatives of oligomers of lactic acid, and mixtures such as lactic acid. A second general embodiment includes biodegradable polymer comprising polymerized lactic acid where the number of repeating lactic acid units n is an integer between 450 and 10,000 and the alpha carbon is a mixture of L- and D-configurations with a preponderance of either D- or L-units. A third general embodiment includes an environmentally degradable composition of blends of a physical mixture of poly(lactic acid), and a polymer selected from the group consisting of poly(ethylene terephthalate), a polymer or copolymer of styrene, ethylene, propylene, vinyl chloride, vinyl acetate, alkyl methacrylate, alkyl acrylate, and physical mixtures thereof. A fourth general embodiment includes an environmentally degradable composition that comprises blends of a physical mixture of a poly(lactic acid), comprising about 1 to 99 weight percent of the composition, and an elastomeric blend compatible polymer.

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