CARBON BLACK COMPOSITIONS

摘要

Suggested is a carbon black composition showing a narrow Aggregate Size Distribution (ASD) characterized by a ΔD50/Dmode value of about 0.58 to about 0.65 and a Relative Span (D90-D10)/D50 of about 0.5 to about 0.8, which is obtainable by means of a modified furnace reactor. The composition shows superior additive performance and allows producing e.g. bus or truck tires with improved wear resistance and reinforcement.

主权项

1. A furnace reactor comprising the following elements:
(i) a combustion chamber; (ii) a cylindrical tube for injection of the feedstock; (iii) a Venturi shaped reaction tunnel for carbon black formation and (iv) a cylindrical tunnel to terminate carbon black formation by a quench, wherein (a) the combustion chamber narrows conically over its length l from a diameter d1 to a diameter d2, (b) the tube shows over its length l2 a constant diameter d2, (c) the reaction tunnel expands over its length l3 from diameter d2 to diameter d3, and (d) the cylindrical tunnel shows over its length l4 a constant diameter d3, on condition that the ratio d2:l2 ranges from about 1:2 to about 1:6.