Pan-tactic crystalline and recyclable polythioesters
AssigneeColorado State University Research Foundation
InventorsEugene Y. Chen, Changxia Shi
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Abstract
A monomer design strategy based on a bridged bicyclic thiolactone that produces stereo-disordered to perfectly stereo-ordered polythioesters is disclosed. The described polythioesters exhibit high crystallinity and full chemical recyclability. Such polymers possess intrinsic tacticity-independent crystallinity and chemical recyclability, tunable tacticities from stereo-disorder to perfect stereoregularity, as well as combined high-performance properties such as high thermal stability and crystallinity, and high mechanical strength, ductility and toughness.
Claims16
A polymer comprising a polythioester represented by Formula I:
- wherein
- the polythioester is a linear polythioester or a cyclic polythioester;
- and
- n is 20-50,000.
A polymer comprising a cyclic polythioester represented as Formula IIIA:
- wherein y is 0-10,000.
Dependencies are inferred from the claim text.