Upcycling perfluoropolymers into fluorinated olefins

US11795126B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Markus E. Hirschberg · Mühldorf, DE
• Klaus Hintzer · Woodbury, US
• Thomas G. Kolbeck · Burgkirchen am Wald, DE
• Matthias Wieland · Eggstätt, DE
• Peter Bauer · Ludwigshafen, DE
• Achim Schmidt-Rodenkirchen · Bayreuth, DE
• Thorsten Gerdes · Dortmund, DE

Key dates

• Filing date: Feb 19, 2021
• Grant date: Oct 24, 2023
• Expiry date: Feb 19, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Mechanical stirred bed reactors that incorporate a screen are described. Methods of using such reactors to process perfluoropolymers to form perfluorinated olefin monomers are also described. The reactors and methods may be used to upcycle filled perfluorinated materials.