Ozone-oxidized carbon black composition with low conductivity and improved color
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United States of America Patent
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Oct 29, 2002
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N/A
app pub date -
Feb 26, 1997
filing date -
Feb 21, 1995
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Abstract
A process for the ozone--oxidation of a carbon black is disclosed. The process employs a gas stream which comprises air and ozone, the type of gas stream typically generated by means of a corona discharge. The ozone--oxidized carbon black is generated by scrubbing (or, intimately contacting) the gas stream with water prior to mixing it with the carbon black. By performing the process disclosed herein, an oxidized carbon black having low electrical conductivity and excellent color properties results.
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