Modified carbon blacks having low PAH amounts and elastomers containing the same
AssigneeCabot Corporation
InventorsFrederick H. Rumpf, Michael D. Morris, James A. Belmont
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Abstract
Modified carbon blacks, such as rubber blacks, having a low PAH concentration are described. Furthermore, elastomeric or rubber compositions containing the modified carbon black of the present invention are further described, as well as methods of making modified carbon black having a low PAH concentration.
Claims27
A modified carbon black having an STSA of from about 70 m2/g to about 250 m2/g, and having an annealed surface by a heat treatment, and wherein said modified carbon black is a furnace carbon black that is surface deactivated and has attached and/or adsorbed at least one chemical group.
A modified carbon black having a PAH content of 75 ppm or less, wherein the PAH content is determined based on a PAH 22 content, said modified carbon black is a furnace carbon black and has an annealed surface by a heat treatment, wherein said modified carbon black comprises a carbon black that is surface deactivated and has attached and/or adsorbed thereon at least one chemical group.
Dependencies are inferred from the claim text.