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US 11,685,796 B2Granted
Methods for converting PVC to elastomers
AssigneeThe Board of Trustees of The University of Alabama
InventorsJason Edward Bara, Paul A. Rupar
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Abstract
Disclosed are methods for upcycling polyvinyl chloride (PVC) that involve the dissolving of PVC in an organic solvent; and contacting the PVC with a base, thereby providing a partially dehydrochlorinated PVC. Polymers made by the disclosed, and articles therefore, are also disclosed.
Claims21
A method of partially dehydrochlorinating polyvinylchloride (PVC), comprising:
- dissolving the PVC in an organic solvent;
- and contacting the PVC with a base, thereby providing a partially dehydrochlorinated PVC;
- and depolymerizing the partially dehydrochlorinated PVC by contacting the partially dehydrochlorinated PVC with a metathesis catalyst and olefin gas.
A method of partially dehydrochlorinating polyvinylchloride (PVC), comprising:
- dissolving the PVC in an organic solvent;
- and contacting the PVC with a base, thereby providing a partially dehydrochlorinated PVC;
- partially hydrogenating the partially dehydrochlorinated PVC by contacting the partially dehydrochlorinated PVC with a hydrogenation catalyst, thereby providing a partially hydrogenated, dehydrochlorinated PVC;
- and depolymerizing the partially hydrogenated, dehydrochlorinated PVC by contacting the partially hydrogenated, dehydrochlorinated PVC with a metathesis catalyst and olefin gas.
1 more element
Dependencies are inferred from the claim text.