Lewis acid polymerization catalyst

US11001669B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Arjun Raghuraman · Pearland, US
• William H. Heath · Lake Jackson, US
• Sukrit Mukhopadhyay · Midland, US
• Heather A. Spinney · Midland, US
• David R. Wilson · Midland, US

Key dates

• Filing date: Sep 14, 2018
• Grant date: May 11, 2021
• Expiry date: Sep 14, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2190/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A Lewis acid polymerization catalyst has a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, R1, R2, R3, and R4 are each independent, R1 is a 3,5-bis(trifluoromethyl)-substituted phenyl group, R2 is the 3,5-bis(trifluoromethyl)-substituted phenyl group or a first fluoro-substituted phenyl group selected from Set 1 structures, R3 is independently a second fluoro-substituted phenyl group selected from the Set 1 structures, and optional R4 includes a third functional group or functional polymer group.