The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2014
Filed:
Feb. 22, 2011
Arndt-peter Schinkel, Marienhausen, DE;
Michael Stanyschöfsky, Hürth, DE;
Conny Vogler, Ruppichteroth, DE;
Joachim Fröhlich, Neumarkt, DE;
Bernhard Schwaiger, Erftstadt, DE;
Thomas Pelster, Brühl, DE;
Arndt-Peter Schinkel, Marienhausen, DE;
Michael Stanyschöfsky, Hürth, DE;
Conny Vogler, Ruppichteroth, DE;
Joachim Fröhlich, Neumarkt, DE;
Bernhard Schwaiger, Erftstadt, DE;
Thomas Pelster, Brühl, DE;
Evonik Carbon Black GmbH, Hanau, DE;
Abstract
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.