Modification of feedstock for productino of oxidized asphalts

Production of oxidized asphalts with improved quality characteristics an be increased by modifying the initial feedstock, for example, with cationic surfactants (CSF). The use of a quaternary ammonium compound with a C-17-C-19 hydrocarbon radical in the optimum concentration of 0.06 wt. % increases the proportion of heavier components in the asphalt, that is, causes a greater degree of oxidation of the feedstock. A decrease in consumption rates in production of asphalt is possible as a result. The quality of the asphalt obtained either with a 30% decrease in air consumption or a 10 - 15 degreesC decrease in the temperature or with a 30% reduction in the oxidation time is as good as the "baseline" sample.