METHOD OF PRODUCING BITUMEN MODIFIER Russian patent published in 2024 - IPC C08L95/00 C08K13/04 C08K13/06 

FIELD: construction.

SUBSTANCE: invention relates to methods of producing compositions of bituminous materials, in particular to a method of producing a bitumen modifier. Method is carried out by initial mixing of three parts of bitumen with one part of machine oil, then the obtained mixture is heated, while simultaneously stirring, to temperature of 160 °C. Then three parts of rubber crumb are added, then the obtained mixture is heated, while performing its mixing to the state of homogeneity. After that, the mixture is subjected to homogenisation, then one part of inert materials dust and a quarter of the fluffed cellulose are added, the obtained mixture is mixed. Further, the mixture is cooled to temperature of 15 to 25 °C and the cooled mixture is subjected to granulation with subsequent cutting into granules.

EFFECT: high resistance to cracks in the asphalt pavement at ambient temperature drops.

9 cl, 1 tbl