Patent ID: 6627058
Filing Date: 2003-09-30
Classification: C12Q,G01N

Abstract:
A composition consisting essentially of:(a) electrocatalyst selected from the group consisting of (1) platinum black and platinum group metal powders, alloys and mixtures thereof; (2) platinum group metals, alloys or mixtures thereof deposited on graphite support particles; or (3) mixtures of (1) and (2) wherein the surface area of said electrocatalyst is less than 150 m2/g; (b) carbon-based electrically conductive filler selected from the group consisting of graphite and mixtures of graphite and conductive carbon black; (c) a hydrophobic poly(glycol ether) material selected from the group consisting of a hydrophobic poly(glycol ethers)polymer, poly(tetramethylene glycol), poly(propylene glycol), hydrophobic copolymers of poly(gycol ether) with alkyl and carboxylated poly(glycol ether) and mixtures thereof; and (d) a thermoplastic polymer material; and; (e) an aromatic hydrocarbon solvent.