Aliphatic polycarbonate quench method

US9868816B2 · kind B2 · utility

Assignee

• Saudi Aramco Technologies Company · SA

Inventors

• Scott D. Allen · Ithaca, US
• Jeffrey R. Conuel · Ithaca, US
• David Decker · Ithaca, US
• Anna E. Cherian · Ithaca, US

Key dates

• Filing date: Mar 10, 2015
• Grant date: Jan 16, 2018
• Expiry date: Mar 10, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G64/406
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure is directed to, in part, an aliphatic polycarbonate polymerization reaction initiated by combining an epoxide with carbon dioxide in the presence of a catalytic transition metal-ligand complex to form a reaction mixture, and further quenching that polymerization reaction by contacting the reaction mixture with an acid containing a non-nucleophilic anion produces a crude polymer solution with improved stability and processability.