Polyvinyl butyral-g-polylactide copolymer
AssigneePolyOne Corporation
InventorsYannan Duan, Roger W. Avakian
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Abstract
Copolymers of a polyvinyl butyral backbone with polylactic acid grafts and their compounds are disclosed, which can be used to produce clear, flexible and ductile bio-based films. The copolymers are amorphous and have been shown to maintain clarity, flexibility, and ductility after continuous exposure to thermal aging at 80° C. for one week.
Claims18
A copolymer of polyvinyl butyral-g-polylactide, wherein the copolymer is a reaction product of the polyvinyl butyral and lactide monomer polymerized to form polylactide in the presence of a catalyst, and wherein the weight ratio of polyvinyl butyral to polylactide ranges from about 1:18 to about 4:1.
Dependencies are inferred from the claim text.