Evonik Carbon Black Gmbh

Orion Engineered Carbons Gmbh

Riebel, Ulrich

Kai Krauss

Helmut Mangold

Kai Schumacher

Alfons Karl

Rainer Golchert

Helmut Roth

Matthias Katzer

Ulrich Riebel

Michael Stanyschöfsky

Catharina Quitmann

Juergen Behnisch

Udo Wieschnowsky

Jürgen Behnisch

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

The invention relates to a method for producing carbon black or other flame aerosols, comprising the following steps: the heat is removed from the flame by dissipation and/or radiation; a thin gas boundary layer is formed; the flow formed by the flame and the gas boundary layer is accelerated or expanded; the obtained aerosol is withdrawn; and the cooling surface is cleaned. The invention further relates to a device for carrying out such a method and a black carbon having a maximum pH value of 6.0, a maximum ignition residue of 0.1 percent, and a maximum 5 &#x3bc;m screening refuse of 200 ppm. The inventive black carbon can be used in rubber, plastic, printing inks, inks, inkjet inks, toners, lacquers, dyes, paper, bitumen, concrete, and other construction materials.

Carbon black, method for the production of carbon black or other flame aerosols, and device for carrying out said method

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Grosskrotzenburg, Germany

Kai Krauss