COPOLYMERS OF MONOCYCLIC ESTERS AND CARBONATES AND METHODS FOR MAKING SAME

Copolymers having repeating units derived from monocyclic esters or carbonates and certain bicyclic diesters and/or carbonates have controllable rheological properties. The bicyclic diester and/or carbonate copolymerizes easily with the monocyclic monomers, especially with lactide, to form copolymer...

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Bibliographic Details
Main Authors WOLF, RICHARD, HARTMANN, MARK, DRUMRIGHT, RAY, E
Format Patent
LanguageEnglish
French
German
Published 14.04.2004
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Copolymers having repeating units derived from monocyclic esters or carbonates and certain bicyclic diesters and/or carbonates have controllable rheological properties. The bicyclic diester and/or carbonate copolymerizes easily with the monocyclic monomers, especially with lactide, to form copolymer that can have tailored levels of branching. The copolymers have excellent rheological properties, including increased melt tensions and improved shear thinning, compared to the analogous linear polymers.
Bibliography:Application Number: EP20020741975