METHOD OF PRODUCING ASPHALTITE-CONTAINING ROAD BITUMEN Russian patent published in 2015 - IPC C10C3/04 C08L95/00 

FIELD: chemistry.

SUBSTANCE: method is carried out via atmospheric oxygen oxidation of a mixture of tar or a product of mixing tar with a 5th vacuum cut of a masout vacuum distillation apparatus with asphaltite from the process of propane deasphalting of tar with the ratio of tar or product of mixing tar with a 5th vacuum distillation cut:asphaltite of 30:70 to 50:50 wt %, followed by blending the oxidised asphaltite-containing mixture with straight-run tar, with the ratio of the oxidised mixture:tar of 55:45 to 40:60 wt %, to obtain an end product of the required quality.

EFFECT: method enables to obtain high-quality road bitumen of different classes, recycle asphaltite - a by-product of the process of propane deasphalting of tar.

2 cl, 2 tbl, 5 ex