Polyurethane latexes, processes for preparing them and polymers prepared therewith

US6720385B2 · kind B2 · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Rick Tabor · Plymouth, US
• Douglas R. Moore · Vernon Hills, US
• James J. Jakubowski · Midland, US
• Wayne R. Willkomm · Wheat Ridge, US
• Ruben Solis · Lake Jackson, US

Key dates

• Filing date: Apr 30, 2002
• Grant date: Apr 13, 2004
• Expiry date: Apr 30, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are stable aqueous polyurethane latexes prepared from prepolymer formulations including a polyisocyanate component and polyol component, wherein from 5 to 40 percent of the weight of the polyol component is ethylene oxide in the form of ethylene oxide applied as an end cap onto a propylene oxide or higher oxyalkylene polyoxyalkylene polyol, and no more than 45 percent of the weight of polyol component is ethylene oxide. These latexes are prepared without the use of organic solvents.