Assertion: carbon black | /r/HasProperty | obtained
Facets:
Source sentences:
text: We have found that carbon blacks with low structure, e.g., a DBP of 20 cc/100 g to 40 or 50 cc/100 g, can be obtained at intermediate to high surface area, e.g., an iodine number of 30 mg/g or 70 mg/g to 200 mg/g, by a combination of adding alkali and/or alkaline earth salts to the feedstock of a carbon black furnace operated under particular conditions, for example, with addition of auxiliary hydrocarbon and an increased overall combustion ratio, as described in more detail below.