Polyester polymers comprising lignin

US10836929B2 · kind B2 · utility

Assignee

• PPG Industries Ohio, Inc. · US

Inventors

• Mark P. Bowman · New Kensington, US
• Carole A. Conley · Verona, US
• Irina G. Schwendeman · Wexford, US
• Mercy M. Hibbert · Melbourne, AU

Key dates

• Filing date: Dec 6, 2017
• Grant date: Nov 17, 2020
• Expiry date: Jan 2, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/3179
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Disclosed is a polyester polymer prepared from a reaction mixture comprising a polyacid component and a polyol component that comprises lignin. Residues of lignin are incorporated into the backbone of the polyester polymer. Coatings comprising the same and substrates coated at least in part with such coatings are also disclosed.