Abstract: This disclosure relates to a certain class of carbon black products having high surface area and very low degree of porosity and the use thereof as reinforcing additives in the preparation of rubber compositions having improved properties.

Abstract: This disclosure relates to a certain class of carbon black products having high surface area and very low degree of porosity and the use thereof as reinforcing additives in the preparation of rubber compositions having improved properties.

Abstract: A process is provided for making high-quality carbon blacks at unusually good yields in a highly compact reaction space. The key steps of the process are the generation of a very hot combustion gas stream moving at very high speed in essentially plug flow by burning a hydrocarbon gas in oxygen in a compact combustion zone under conditions of very high heat release assuring the attainment of temperatures of over 3,000.degree. F., and the transverse injection into said highspeed combustion stream from the periphery thereof of a plurality of individual streams of liquid hydrocarbon make, each of which is injected under sufficient pressure to cause same to enter said high-speed combustion stream at a linear velocity of more than about 100 fett per second. Preferably, a highly oxygen-enriched oxidant is used to burn the hydrocarbon gas.