MODIFIED TECHNICAL CARBON, WHICH HAS LOW QUANTITY OF PAH CONTAINING ITS ELASTOMERS Russian patent published in 2017 - IPC C09C1/50 C09C3/08 C08K3/04 C08K9/04 

FIELD: chemistry.

SUBSTANCE: modified furnace black carbon has an annealed surface attached and/or adsorbed to at least one chemical group and has a statistical surface area (STSA) of 70-250 m²/G and the content of polyaromatic hydrocarbons (PAH) from the PAH22 group in amount of 75 ppm or less. This chemical group may be triazole, pyrazole, imidazole or combinations thereof, for example 1,2,4-triazol-3-yl group, 3-mercapto-1,2,4-triazol-5-yl group. The surface of carbon black can be annealed at 1200-1800°C in the process of its production from the feedstock or to apply the same temperature to the ready-made technical carbon with the indicated PAH content and then to attach and/or adsorb the mentioned chemical group. The modified carbon black is introduced into the elastomeric composition prior to vulcanization.

EFFECT: invention makes it possible to increase the abrasive wear resistance of the elastomeric composition and to reduce its hysteresis.

102 cl, 2 dwg, 5 tbl, 5 ex