US 8,445,141 B2 · Sulfonic acid group-containing polymer, method for producing the same, resin composition containing such sulfonic acid group-containing polymer, polymer electrolyte membrane, polymer electrolyte membrane/electrode assembly, and fuel cell

Abstract

The present invention relates to a sulfonic acid group-containing polymer excellent in ion conductivity and durability, a method for producing the same, a resin composition containing the sulfonic acid group-containing polymer, a polymer electrolyte membrane, a polymer electrolyte membrane/electrode assembly, and a fuel cell. The sulfonic acid group-containing polymer of the present invention, in a first embodiment, includes a constituent represented by the following chemical formula 1: wherein X represents hydrogen or a monovalent cation species; Y represents a sulfone group or a ketone group; and n represents an arbitrary integer not less than 2.

Claims16

Dependent claims

A sulfonic acid group-containing polymer comprising, in the molecular chain, a constituent represented by the following chemical formula 1:

wherein X represents hydrogen or a monovalent cation species;
Y represents a sulfone group or a ketone group;
and n represents an arbitrary integer not less than 2,
wherein the sulfonic acid group-containing polymer further comprises a constituent represented by the following chemical formula 2:
wherein n represents an arbitrary integer not less than 2.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/921,799Filed 6 Jun 2006

Priority

JP 2005-1693099 Jun 2005

Published

US 2009/0075147 A119 Mar 2009

Granted

21 May 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

C08J 5/2256
Synthetic macromolecular compounds: based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds,…
C08G 65/40
Derived from phenols: from phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
C08G 65/4056
Other compound containing a ketone group, e.g. X-Ar-C-Ar-X for polyetherketones: or containing sulfur
H01B 1/122
Organic substances: ionic conductors

Sulfonic acid group-containing polymer, method for producing the same, resin composition containing such sulfonic acid group-containing polymer, polymer electrolyte membrane, polymer electrolyte membrane/electrode assembly, and fuel cell

Life of this patent

Sulfonic acid group-containing polymer, method for producing the same, resin composition containing such sulfonic acid group-containing polymer, polymer electrolyte membrane, polymer electrolyte membrane/electrode assembly, and fuel cell

Life of this patent

Abstract

Claims16