IMPROVED RESISTANCE TO ROLLING OF TIRES FROM DIENE RUBBER BY MEANS OF SILANE-MODIFIED POLYBUTADIENES Russian patent published in 2019 - IPC B60C1/00 C08C19/25 C08C19/44 C08L7/00 C08L15/00 C08K3/34 

FIELD: chemistry.

SUBSTANCE: invention relates to use of modified silane polybutadienes in rubber mixtures. Disclosed is use of polybutadienes with end silane group in rubber mixtures, where polybutadiene contains monomer links A, B and C obtained from 1,3-butadiene, where fraction A of total amount of monomer links obtained from 1,3-butadiene present in polybutadiene ranges from 15 to 30 mol. %, fraction B - from 50 to 70 mol. %, and C fraction is from 15 to 30 mol. %, where polybutadienes with end silane group are obtained by reaction of polybutadienes with terminal hydroxyl groups, obtained through free radical polymerisation, with one or more organosilane compounds, and where the organosilane compound is selected from a group comprising compounds of formula I, where R is linear or branched alkylene chains with 1–4 carbon atoms, and R¹ and R² simultaneously or independently from each other represent linear or branched alkyl chains with 1–5 carbon atoms. Disclosed are also corresponding rubber mixtures, use thereof for producing tires, profiles, cable sheaths, hoses, drive belts, conveyor belts, tire treads, shoe soles, O-rings and shock-absorbers, as well as polybutadienes with end silane group.

(A) (B) (C) ,

OCN-R-Si(OR¹)_x(R²)_3-x (I).

EFFECT: technical result is that proposed rubber mixtures are easy to obtain, and articles made from them have improved wear resistance.

9 cl, 16 tbl, 8 ex