Polymeric ionomer separation membranes and methods of use

US10618008B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Michael A. Yandrasits · Hastings, US
• David S. Seitz · Woodbury, US
• Eric F. Funkenbusch · White Bear Lake, US
• Ryan C. Shirk · Mendota Heights, US
• Jinsheng Zhou · Hamilton, CA
• Eric J. Hanson · Hudson, US
• Moses M. David · Woodbury, US
• Kazuhiko Mizuno · Tokyo, JP

Key dates

• Filing date: Jul 1, 2016
• Grant date: Apr 14, 2020
• Expiry date: Feb 16, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A separation membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., a first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid), wherein the separation membrane includes a polymeric ionomer that has a highly fluorinated backbone and recurring pendant groups according to the following formula (Formula I): —O—Rf—[—SO2—N−(Z+)—SO2—R—]m—[SO2]n-Q wherein: Rf is a perfluorinated organic linking group; R is an organic linking group; Z+ is H+, a monovalent cation, or a multivalent cation; Q is H, F, —NH2, —NH2, —O−Y+, or —CxF2x+1; Y+ is H+, a monovalent cation, or a multivalent cation; x=1 to 4; m=0 to 6; and n=0 or 1; with the proviso that at least one of morn must be non-zero.