POLYALKENYL BINDING AGENT AND POLYDIENES RECEIVED WITH ITS HELP Russian patent published in 2018 - IPC C08F36/04 C08F297/04 C08F4/48 C08C19/28 C08C19/44 C08C2/00 C08F6/06 

FIELD: biotechnology.

SUBSTANCE: invention relates to a process for preparing a bound polymer. Method for preparing a bound polymer is carried out by anionic polymerization, in which the bound polymer is a conjugated diene polymer, comprising the following reaction steps: a) polymerizing a monomer or a mixture of monomers containing at least one conjugated diene, if necessary, one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a branch “living” polymer or mixture of branches (P) with an average assumed molecular weight of more than 2000, measured by gel permeation chromatography (GPC) using polystyrene calibration standards in accordance with ASTM D5296-11; b) the interaction of a branch, or branches, “living” polymer with a polyalkenyl coupling agent, which is 1,2-bis(vinylphenyl)ethane; c) completion of the polymerization, if any “living” polymers remain after step b); and d) if necessary, the functionalization and/or hydrogenation of the thus obtained bound polymer. Conjugated diene polymer obtained by the process and an product made of a conjugated diene polymer are also claimed.

EFFECT: technical result is the implementation of the process with a binding agent that is sufficiently pure in impurities, and sufficiently active in the process, and stable, moreover, it provides regulation of the binding process.

16 cl, 2 tbl