BISSYLAMINOSILYL-FUNCTIONALIZED CONJUGATED DIENES AND THEIR USE IN PRODUCTION OF RUBBERS Russian patent published in 2021 - IPC C07F7/10 C08L9/00 B60C1/00 

FIELD: rubber production.

SUBSTANCE: invention relates to bissilylaminosilyl-functionalized conjugated dienes and their use in the production of rubbers. A functionalized conjugated diene selected from the group of compounds described by formulas (Ia), (Ib), (Ic), where R is optional and, if present, represents a linear or branched, saturated or unsaturated hydrocarbylene group, R¹ is selected from a single bond, the SiR⁷R⁸ group and a hydrocarbylene group optionally containing one or more SiR⁷R⁸, R², R³, R⁴, R⁵, R⁷ and R⁸ groups, identical or different and is an alkyl group containing from 1 to 10 carbon atoms. Also proposed are the composition of the specified diene, the use of a derivative of an alkali metal salt and the specified diene as an initiator of anionic copolymerization of conjugated diene monomers and a copolymerization method with its use, as well as an elastomeric copolymer, a rubber production method, a rubber and a rubber composition containing an elastomeric copolymer, a tire component made of the specified composition and tire.

EFFECT: proposed conjugated diene can be obtained by a technological method from readily available raw materials and imparts improved dynamic and mechanical properties to tires obtained from compositions with its use.

46 cl, 6 tbl, 9 ex