The easy water dispersibility conductive carbon black, the production manner and the electric

摘要

PROBLEM TO BE SOLVED: To obtain a carbon black which is especially excellent in water dispersibility while it keeps its high conductivity, its water dispersion, and a conducting material obtained by adhering the carbon black on a substrate and drying the same.;SOLUTION: The carbon black is an easily water-dispersible and conductive- boron-containing carbon black which has an electric conductivity by IS K 1469 of not more than 0.15 Ωcm and a contained oxygen concentration of 1.2-5 wt.%. To obtain this carbon black, a boron-containing carbon black is prepared by a heat decomposition or a burning reaction of a hydrocarbon in the presence of a boron source and then the product is subjected to an oxidation treatment. Its water dispersion is obtained by dispersing this carbon black in an aqueous medium. The conducting material is obtained by adhering the carbon black on a substrate and drying the same.;COPYRIGHT: (C)2004,JPO