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US 8,524,832 B2Granted
Biodegradable impact-modified polymer compositions
AssigneeArkema Inc.
InventorZuzanna Cygan
Life of this patent
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Abstract
The invention relates to a impact-modified bio-degradable polymer composition having large particle size impact modifiers dispersed in a continuous biodegradable polymer phase. The impact modifiers have a core-shell morphology and have average sizes of greater than 250 nm. The impact-modified composition has good impact properties and low haze. The biodegradable polymer is preferably a polylactide or polyhydroxy butyrate. The composition comprises 30-99.9 weight percent of degradable polymer and 0.1 to 15 weight percent of one or more impact modifiers.
Claims14
A biodegradable polymer composition comprising:
- a) 30 to 99.9 weight percent of one or more biodegradable polymers;
- b) 0 to 69.9 weight percent of one or more biopolymers;
- and
- c) 0.1 to 15 weight percent of one or more core-shell impact modifiers,
- wherein said impact modifiers have a number average particle size of greater than 250 nm, and wherein said composition has a haze of less than 15 percent as measured by ASTM 1003-00.
2 more elements
Dependencies are inferred from the claim text.