Oxidized Wet Beaded Carbon Black
AssigneeOrion Engineered Carbons IP GmbH & Co. KG
InventorsAinhoa Noguera, Michael Richter, Hauke Westenberg, Rudolf Scharffenberg-Kahlke, Jad Abi Haidar, Ralf Bergsträsser
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Abstract
The present invention relates to a process for the production of oxidized wet beaded carbon black. It has been found that carbon black can be wet beaded and oxidized subsequently. This process allows a better control of the degree of oxidation without damaging the beads. Moreover, the oxidized wet beaded carbon black can be beneficially used in a rubber composition to increase the properties of the resulting rubber product.
Claims15
A process for the production of oxidized wet beaded carbon black comprising the following steps:
- (a) providing carbon black,
- (b) wet beading the carbon black obtained in step (a) to obtain wet beaded carbon black, and
- (c) oxidizing the wet beaded carbon black obtained in step (b) in a reaction chamber to obtain oxidized wet beaded carbon black.
An oxidized wet beaded carbon black having a volatile content measured at 950° C. of 1 to 25 wt.-% and an average pellet crush strength of pellets with a diameter of from 0.71 to 1.0 mm of from 4 to 80 cN.
Dependencies are inferred from the claim text.