FIELD: chemistry.
SUBSTANCE: invention relates to oligomeric organosilanes used in rubber mixtures. Proposed are oligomeric organosilanes containing at least two different structural units in one molecule, selected from the structural units A, B, C, and D and linked in any linear, branched or cyclic arrangement, at the same time at least one group R, R1, R2, R3, R4 or R7 represents a group of simple alkyl polyester-O-(R5-O)m-R6. Also, a method for their preparation, their use in rubber mixtures, the corresponding rubber mixtures and a method for their use have been proposed. 
EFFECT: proposed oligomeric organosilanes have improved processability and impart increased tear resistance to rubber mixtures containing them.
27 cl, 4 tbl, 6 ex
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