METHOD FOR PRODUCTION OF UNIVERSAL BITUMEN-POLYMER COMPOSITION Russian patent published in 2022 - IPC C08L95/00 C08K13/02 

FIELD: road construction.

SUBSTANCE: invention relates to the field of repair of road surfaces and concrete structures; it is intended for sealing of seams and cracks in asphalt and cement concrete coatings, in particular to a method for the production of a bitumen-polymer composition. The method includes combination of butadiene-nitrile rubber in amount of 12-16 wt.pt. with a chlor-containing hydrocarbon solution – chloroparaffin CP-66T in amount of 0.4-0.6 wt.pt. in an organic solvent in amount of 30-40 wt.pt. at a temperature of 110°C, in which rubber crumb with a fraction <0.65 mm in amount of 8-12 wt.pt., bitumen BND 60/90 in amount of 60-70 wt.pt., a mineral filler – shungite in amount of 8-12 wt.pt., and quinol ether EC-1 in amount of 0.2-0.3 wt.pt. are sequentially added. At the same time, quinol ether EC-1 is added before application.

EFFECT: obtaining a bitumen-polymer composition with increased resistance to different weather conditions, increased adhesive and elastic strength properties.

1 cl, 4 tbl, 3 ex