A Correlation for Temperature Effect on Coal Tar Pitches and Refined Tars Viscosity

Abstract

A logarithmic viscosity-temperature relationship fits the results, was suggested. It shows that the correct order of viscosity of a tar product, within the range of materials and viscosities investigated, can be predicted from its softening point and its toluene insoluble content.

Viscosity evaluation of the mixture of coal tars from collection main and primary cooler on the base of rheometer measurements and empirical formulas

“…The viscosity dependence of coal tars and pitches on temperature was estimated in [10]. Logarithmic correlation was established, but it had been obtained for substances with a viscosity higher than 104 cP.…”