Evonik Carbon Black Gmbh

Orion Engineered Carbons Gmbh

Michael Stanyschöfsky

Joachim Fröhlich

Alfons Karl

Conny Vogler

Arndt-Peter Schinkel

Paul Dieter Messer

Thomas Pelster

Matthias Katzer

Bernhard Schwaiger

Kai Krauss

Catharina Quitmann

Gernot Meinerzhagen

Paul Messer

Kai Krauß

The invention relates to carbon black having a C-14 content greater than 0.05 Bq/g and a ratio &#x394;D50/Dmode of the aggregate size distribution of less than 0.7. The carbon black is produced by thermal oxidative pyrolysis or thermal cleavage of the carbon black raw material in that the carbon black raw material contains renewable carbon black raw materials and an oxygen deficiency is present in the pyrolysis/cleavage reaction. The carbon blacks can be used in rubber and rubber mixtures, plastic, printing inks, inks, inkjet inks, toners, lacquers, paints, paper, adhesives, batteries, pastes, bitumens, concrete, and other building materials and as reducing agents in metallurgy.

Carbon black, method for the production thereof, and use thereof

The invention relates to a carbon black with a CTAB surface area of from 20 to 49 m/g, with a COAN greater than 90 ml/(100 g), and with a sum of OAN and COAN greater than 235 ml/(100 g). The carbon black is produced in a furnace reactor, where from 20 to 55% by weight of the feedstock used for the carbon black are introduced radially through a nozzle within the first third of the reaction zone, and the remaining amount of the feedstock used for the carbon black is introduced through a nozzle upstream at least one further point into the reactor. The carbon black can be used in rubber mixtures.

The invention relates to a carbon black having an aggregate size distribution which has a (d-d)/dratio of less than or equal to 1.1. The carbon blacks are produced by admixing hot air if desired to a gas mixture comprising a carrier gas and a carbon black feedstock, passing the gas mixture into a burner pipe, burning the gas mixture at the burner pipe openings, and drawing the flames under suction, together with the ambient air drawn in freely under suction from the outside, through a cooled, narrowing gap, and carrying out cooling, the cooled, narrowing gap having a height (h) to width (b) ratio of 1-100, the width (b) being 0.5 to 10 mm, and the flow rate at the narrowest point of the gap being 10-200 m/s. The carbon blacks of the invention can be used as non-reinforcing filler, reinforcing filler, UV stabilizer, conductive black, pigment or reducing agent.

Carbon black, method of producing carbon black, and device for implementing the method

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Hürth, Germany

Michael Stanyschöfsky