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 s urfactants (CSF). The use of a quaternary ammonium compound with a C-17-C-1 9 hydrocarbon radical in the optimum concentration of 0.06 wt. % increases the proportion of heavier components in the asphalt, that is, causes a grea ter degree of oxidation of the feedstock. A decrease in consumption rates i n 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 degree sC decrease in the temperature or with a 30% reduction in the oxidation tim e is as good as the "baseline" sample.