Degradable impact modified polyactic acid

Details Degradable impact modified polyactic acid Degradable impact modified polyactic acid

1990-09-06

1993-10-12

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524310, 524320, 525 92, 525186, 525190, 5253329, 5253331, 525386, 525411, 525415, 525437, 525450, 525454, 525938, C08L 700, C08L 900, C08L 6702, C08L 6704

Patent

active

052526429

ABSTRACT:
An environmentally degradable composition 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, such as a segmented polyester, that provides improved impact resistance to the poly(lactic acid) and is discrete and intimately bound; plasticizer is added to the blend that is selected from the group consisting of lactide monomer, lactic acid oligomer, lactic acid, and mixtures thereof. Other plasticizer that may be added includes one or more derivatives of an oligomer of lactic acid, its esters and copolymer.

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