Abstract: Process for the production of furnace black by producing a stream of hot combustion gases in a combustion chamber, feeding the hot combustion gases along a flow axis from the combustion chamber through a reactor narrow point into a reaction zone, mixing carbon black raw material into the flow of the combustion gases in front of, inside or behind the reactor narrow point and stopping carbon black formation downstream in the reaction zone by spraying in water, steam being jetted in axially through the gas burner and optionally at the radial oil nozzles and beaded carbon black being introduced before and/or after the reactor narrow point.

Abstract: Process for the production of furnace black by producing a stream of hot combustion gases in a combustion chamber, feeding the hot combustion gases along a flow axis from the combustion chamber through a reactor narrow point into a reaction zone, mixing carbon black raw material into the flow of the combustion gases in front of, inside or behind the reactor narrow point and stopping carbon black formation downstream in the reaction zone by spraying in water, steam being jetted in axially through the gas burner and optionally at the radial oil nozzles and beaded carbon black being introduced before and/or after the reactor narrow point.

Abstract: A heat-shrinkable envelope of crosslinked polymeric plastic material is composed of regions having different amounts of shrinkability which regions are disposed uniformly over the entire area of the envelope. The difference in the regions of shrinkability can be obtained by different amounts of crosslinking, by different geometric shapes for the two regions or a combination of both. The regions can be arranged in sandwich-like layers or can be arranged in alternately-arranged, parallel-extending bands. The regions having the lower shrinkability resist tearing and continued tearing of the regions with the high shrinkability and the region with the high shrinkability insure a proper shrinking of the envelope onto the article or material being surrounded thereby.