BITUMEN COMPOSITIONS, METHODS OF PRODUCTION AND USE THEREOF Russian patent published in 2024 - IPC C08L95/00 C08K3/22 C04B26/26 E01C7/18 C08J3/22 C04B22/06 C04B111/00 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a bitumen composition and a method for production thereof, as well as to the use of hydroxide XOH with X = Na or K in said composition, to the use of a bitumen composition as a binder for producing a waterproof coating, a membrane or a sealing layer and for preparing a surface coating, a hot mixture, cold mixture, cold pouring, gravel emulsion or compacted layer, to a method of preparing a binder mixture, to a binder mixture, to asphalt and a method for preparing it. Bitumen composition contains a mixture of a bitumen base, which is at least 50 wt.% of the total weight of the composition, and hydroxide XOH with X = Na or K, which is 0.001–1 wt.% with respect to the weight of the composition. Said bitumen base has internal stability S 1–2.5 and/or peptization level Sa 0–0.6, wherein said values S and Sa are measured in accordance with ASTM D 7157-12. Method includes the following stages: a) preparing the available starting bitumen composition specified above, and b) adding hydroxide XOH, where X = Na or K.

EFFECT: development of bitumen compositions which help to reduce the appearance of cracks at low temperatures.

26 cl, 2 tbl