METHOD OF PRODUCING BRANCHED MODIFIED RUBBER AND A RUBBER MIXTURE CONTAINING A BRANCHED MODIFIED RUBBER OBTAINED USING SAID METHOD, AS WELL AS USE THEREOF Russian patent published in 2019 - IPC C08F4/48 C08F36/14 C08F136/14 C08F236/14 C08C19/25 C08L9/00 

FIELD: technological processes.

SUBSTANCE: invention relates to methods of producing branched-modified rubber. Disclosed is a method of producing branched modified rubber, involving anionic polymerisation of a conjugated diene or conjugated diene and a vinyl aromatic compound in the presence of an initiator and a polyfunctional modifying agent, where the initiator used is a compound which is a product of reacting an organolithium compound and a secondary amine, and the modifying agent used is oligo- or polysiloxanes containing in their structure simultaneously alkoxy and epoxy functional groups. Branched-modified rubber obtained using said method and a rubber mixture containing said branched modified rubber are also disclosed.

EFFECT: disclosed method enables to obtain rubber which is suitable for making rubber with improved hysteresis characteristics.

20 cl, 9 dwg, 3 tbl, 9 ex