Polyactic acid-based blends
AssigneeUniversity of Massachusetts
InventorsStephen P. McCarthy, Richard A. Gross, Wenguang Ma
Life of this patent
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Abstract
Biodegradable blends including a first, polylactic acid-based polymer or copolymer, and a second polymer or copolymer including one or more polyesters, e.g., an aliphatic polyester or a polyester of one aliphatic C.sub.2 to C.sub.20 diacid or of a combination of two more different aliphatic C.sub.2 to C.sub.20 diacids, wherein the first and second polymers are present in a ratio of 9:1 to 1:9, are described.
Claims25
A biodegradable blend comprising:
- (a) a first polylactic acid-based polymer or copolymer, and
- (b) a second polymer consisting essentially of one or more polyesters,
- wherein said first and second polymers are present in a ratio of 9:1 to 1:9 by weight, and wherein the second polymer is a homopolymer or random copolymer that forms a continuous or co-continuous phase in the blend.
A film comprising a biodegradable blend comprising:
- (a) a first polylactic acid-based polymer or copolymer, and
- (b) a second polymer consisting essentially of one or more polyesters,
- wherein said first and second polymers are present in a ratio of 9:1 to 1:0 by weight, and wherein th second polymer is a homopolymer or random copolymer that forms a continuous or co-continuous phase in the blend.
A bag comprising a biodegradable blend comprising;
- (a) a first polylactic acid-based polymer or co-polymer, and
- (b) a Second polymer consisting essentially of one or more polyesters.
- wherein said first and second polymers are present in a ratio of 9:1 to 1:0 by weight, and wherein the second polymer is a homopolymer or random copolymer that forms a continuous or co-continuous phase in the blend.
A container comprising a biodegradable blend comprising:
- (a) a first polylactic acid-based polymer or copolymer, and
- (b) a second polymer consisting essentially of one or more polyesters,
- wherein said first and second polymers are present in a ratio of 9:1 to 1.0 by weight and wherein the second polymer is a homopolymer or random copolymer that forms a continuous or co-continuous phase in the blend.
A disposable diaper comprising a biodegradable blend comprising:
- (a) a first polylactic acid-based polymer or copolymer, and
- (b) a second polymer consisting essentially of one or more polyesters,
- wherein said first and second polymers are present in a ratio of 9:1 to 1:0 by weight, and wherein the second polymer is a homopolymer or random copolymer that forms a continuous or co-continuous phase in the blend.
Dependencies are inferred from the claim text.