Benzimidazole-containing sulfonated polyethersulfones

US7547756B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Joyce Hung · Niskayuna, US
• Hongyi Zhou · Niskayuna, US
• Daniel J. Brunelle · Scotia, US
• Marianne Elisabeth Harmon · Niskayuna, US
• Daniel Steiger · San Francisco, US
• Hongwei Liu · Troy, US
• David Roger Moore · Rexford, US

Key dates

• Filing date: Oct 31, 2005
• Grant date: Jun 16, 2009
• Expiry date: Mar 2, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Sulfonated polyethersulfones and polymer compositions comprising sulfonated polyethersulfones and at least one inorganic heteropolyacid are useful as proton exchange membranes for fuel cells. The polyethersulfones include structural units derived from at least one biphenol monomer and a monomer of formula Iwherein X is O, S or NR1;