Conductive coating composition
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United States of America Patent
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Aug 20, 1991
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N/A
app pub date -
Jan 12, 1989
filing date -
Jan 12, 1989
priority date (Note) -
Expired
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Abstract
A composition for forming electrically-conductive coatings, consisting essentially of a water-urethane resin, a plurality of carbon pigments including carbon black and natural graphite, each carbon pigment having a different preselected average particle size, and sufficient water to permit dispersion of the resin and carbon pigments therethrough. The ratio of resin to total carbon pigment and the ratio of each carbon pigment to total carbon pigment is selected such that a coating formed upon air drying of the composition has a resistance of less than 1 ohms per square and as low as 0.15-0.3 ohms per square.
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