Waterborne two component polyurethane coating compositions comprising alicyclic rigid polyols

US9365739B2 · kind B2 · utility

Assignee

• Rohm and Haas Company · US

Inventors

• Gary W. Dombrowski · Chester Springs, US
• Zhenwen Fu · Lansdale, US
• Caroline Slone · Quakertown, US
• Andrew Swartz · Kutztown, US
• Jia Tang · Tangxia, CN

Key dates

• Filing date: Dec 16, 2013
• Grant date: Jun 14, 2016
• Expiry date: Jul 17, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D175/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides two-component polyurethane compositions that are substantially free of VOCs and comprising, as one component, polyisocyanate compositions and, as a second component, a polyol which is chosen from a cycloaliphatic diol or polyol having a molecular weight of from 100 to 500 and containing one or more 4 to 7 member aliphatic ring and an oligomeric diol or polyol comprising the condensation reaction product of from 30 wt. % to 78 wt. %, based on the total weight of reactants used to make the oligomer, and an acrylic or vinyl emulsion polymer.