Poly(acrylic acid) from bio-based acrylic acid and its derivatives

US9630901B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Jane Ellen Godlewski · Loveland, US
• Janette Villalobos · Cincinnati, US
• Dimitris Ioannis Collias · Mason, US
• Axel Meyer · Frankfurt am Main, DE
• Peter Dziezok · Hochheim, DE
• Juan Estaban Velasquez · Cincinnati, US

Key dates

• Filing date: Feb 6, 2013
• Grant date: Apr 25, 2017
• Expiry date: Feb 1, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/530496
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid.