Process for the production of high quality carbon black forming material
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsLothar Rothbuhr, Werner Sroka, Walter Fritz
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Abstract
High quality carbon black forming material convertible with high yield into furnace black having a high abrasion resistance in rubber is prepared by dissolving pitch with conventional thinly liquid carbon black feed stock and mechanically separating suspended matter from the mixture obtained.
Claims44
A process of producing a high quality carbon black forming material convertible with high yield into furnace black having a high abrasion resistance in rubber compositions consisting essentially of dissolving aromatic pitch in a thin liquid hydrocarbon carbon black feedstock having a viscosity at 100.degree. C. of 5 to 30 cp, there being present suspended matter in the mixture thus formed, mechanically separating suspended matter from the mixture obtained and recovering the pitch containing feedstock having a viscosity at 100.degree. C. of 40 to 300 cp.
A process according to claim 23 wherein the filter has an average pore size of 5 to 10.mu. and the filtering is carried out at a temperature of 100.degree. to 170.degree. C.
A process of producing a high quality carbon black forming material convertible with high yield into furnace black having a high abrasion resistance in rubber compositions consisting essentially of mechanically separating suspended matter from a thermally cracked aromatic pitch containing thin liquid hydrocarbon carbon black feedstock having a viscosity at 100.degree. C. of 40 to 300 cp, there being present suspended matter in the mixture thus formed, the feedstock in the absence of the pitch having a viscosity at 100.degree. C. of 5 to 30 cp, and recovering the pitch containing feestock.
Dependencies are inferred from the claim text.