POLYMER-BITUMEN BINDER FOR ROAD SURFACE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2017 - IPC C08L95/00 C04B26/26 C09D195/00 

FIELD: chemistry.

SUBSTANCE: method for the production of a polymer-bitumen binder is to be introduced into the bitumen at a temperature of 140-150°C a mixture of tar with a conventional viscosity at 80°C 60-300 s and the distillate fraction 540-610°C at a ratio of 3:1, in an amount of 30-60 wt % of the composition, and then a block copolymer of alkadiene and styrene in an amount of 3.0-3.5 wt %, until complete dissolution.

EFFECT: method increases the degree of homogenisation of bitumen compositions, thus widening the operating range thereof, which is characterised by softening temperature and brittleness temperature, reduces specific energy consumption when producing polymer-bitumen binder, as well as a cost thereof.

2 cl, 1 tbl