The phenol-cresol-formaldehyde resin (PhCR-F) obtained from phenolic fraction of coal tar has been synthesized via the polycondensation method of "raw" phenols with formaldehyde.The modification of road bitumen by this resin was carried out.PhCR-F in different concentrations was found to be effectively used as a modifier of road bitumen.It was shown that PhCR-F is an effective adhesive additive for road bitumen.The structural types of the oxidized and modified bitumen were determined according to the group-chemical composition and calculated criteria.
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Demchuk et al. (2018) studied this question.
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