Terpolymers from lactide
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United States of America Patent
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Jul 4, 2006
Grant Date -
Jan 6, 2005
app pub date -
Apr 7, 2004
filing date -
Apr 7, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is generally directed to a process for producing lactide-based polymers and the polymers produced by this process. The polymers of the present invention are terpolymers formed by the copolymerization of a lactide monomer, a linking monomer and an epoxy-terminated monomer. In one embodiment of the invention, the polymers may be formed from fluorine-containing monomers or aromatic ring-containing monomers. The disclosed materials may display improved hydrolytic and thermal characteristics as compared to previously known lactide-based materials. For example, the lactide based terpolymers may have a glass transition temperature over 60.degree. C. For instance, lactide-based thermoplastic terpolymers of the present invention can have a glass transition temperatures of about 80.degree. C. or higher. Lactide-based thermoset networks of the invention can have glass transition temperatures of up to about 200.degree. C.
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