PRODUCTION OF HIGHLY CONDUCTIVE CARBON BLACK

PURPOSE:To obtain the title carbon black which has no agglomerates, excels in dispersibility and can give an excellent conductive material when kneaded with a resin etc., by adding a specified amount of an oil with agitation to an aqueous slurry of conductive carbon black, separating powdery carbon...

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Bibliographische Detailangaben
Hauptverfasser: SHINDOU KATSUO, ITOU KISHIYA, NISHII TOSHIBUMI, DEGUCHI JICHIO
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To obtain the title carbon black which has no agglomerates, excels in dispersibility and can give an excellent conductive material when kneaded with a resin etc., by adding a specified amount of an oil with agitation to an aqueous slurry of conductive carbon black, separating powdery carbon black set free on the oil film on the slurry surface and drying it. CONSTITUTION:A reaction gas containing carbon black of high electric conductivity and low ash content, obtained by partially oxidizing a liquid hydrocarbon oil such as a naphtha cracking oil of a C to H weight ratio >=9 with 200-800kg of steam per ton of hydrocarbon feedstock in a reactor 10-80kg/cm and 1,200-1,450 deg.C is scrubbed with water to obtain an aqueous conductive carbon black slurry of a concentration