A coating composition, effective in emitting heat without breaking down
when connected to a source of electricity, is formulated from a binder; an
electrically conductive carbon black particle generated by high
temperature pyrolysis of acetylene and having a particle size between of
between about 5 and 500.mu.; an electrically conductive graphite particle
having a degree of crystallinity of at least about 67% and having a
particle size between about 5 and 500.mu.; and a volatile solvent. The
weight amount of (b) and (c) together ranges from between about 10 and 75
weight-% based on the non-volatile solids content of the coating
composition.