Methods for polymer synthesis

US10308761B2 · kind B2 · utility

Assignee

• Saudi Aramco Technologies Company · SA

Inventors

• Scott D. Allen · Ithaca, US
• Christopher A. Simoneau · Ithaca, US
• William D. Keefe · Ithaca, US
• Jeff R. Conuel · Ithaca, US

Key dates

• Filing date: Dec 2, 2016
• Grant date: Jun 4, 2019
• Expiry date: May 14, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G64/34
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.