Recycling of superabsorbent fibers with an extensional flow device

US12104021B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Juliane Kamphus · Schwalbach, DE
• Bruno Johannes Ehrnsperger · Bad Soden, DE
• Arsen Arsenov Simonyan · Schwalbach, DE
• Dimitris Ioannis Collias · Mason, US
• John Andrew McDaniel · Middletown, US
• Martin Ian James · Cincinnati, US
• Gary Wayne Gilbertson · Wadsworth, US
• Jacqueline Besinaiz Thomas · Oregonia, US
• Yiping Sun · Mason, US

Key dates

• Filing date: Feb 3, 2022
• Grant date: Oct 1, 2024
• Expiry date: Apr 5, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/08
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Superabsorbent fibers (SAF) in a feed stream is converted into soluble polymers in an extensional flow device. The total energy used to degrade the SAF into soluble polymers is less than about 50 MJ/kg SAF.