Carbon black, method for the production thereof, and use...

C - Chemistry – Metallurgy – 09 – C

Patent

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C09C 1/50 (2006.01)

Patent

CA 2701550

The invention relates to black having a CTAB surface area of 100 to 160 m2/g, a quartile ratio of more than 1.60, and an FP index of > 0. Said black is produced in a furnace reactor. Sixty to 90 percent by weight of the raw black material are injected into the reactor in the first third of the reaction zone, while the remaining amount of the raw black material is injected into the reactor upstream at least in one other point. In addition, the combustible is conducted such that 90 to 100 percent by weight of the combustible are evaporated when first hitting the raw black material and 80 to 99 percent by weight of the combustible are evaporated 5ms before hitting the raw black material. Said blacks can be used in rubber mixtures.

L'invention concerne du noir de carbone présentant une surface CTAB comprise entre 100 et 160 m2/g, un rapport interquartile supérieur à 1,60 et un indice FP supérieur à zéro. Selon l'invention, les noirs de carbone sont produits dans un réacteur de four. 60 à 90% en poids du noir de carbone brut sont injectés dans le premier tiers de la zone de réaction et la quantité restante du noir brut est injectée dans le réacteur, en amont, en au moins un autre endroit. En outre, le combustible est acheminé de sorte que, lorsqu'il entre en contact pour la première fois avec le noir brut, 90 à 100% du combustible se volatilisent, et que, cinq minutes avant qu'il entre en contact avec le noir brut, 80 à 99% du combustible se volatilisent. Les noirs de carbone peuvent être utilisés dans des mélanges de caoutchoucs.

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