METHOD OF PRODUCING HIGH-MOLECULAR BROMATED RUBBER USING COMMON SOLVENT Russian patent published in 2016 - IPC C08F210/12 C08F8/22 C08C19/14 C08F2/06 

FIELD: chemistry.

SUBSTANCE: present invention relates to a process for preparing brominated rubbers. A process for the preparation of brominated rubbers comprising at least the steps of: a) providing a reaction medium comprising a common aliphatic medium comprising at least 50 wt.-% of one or more aliphatic hydrocarbons having a boiling point in the range of 45 °C to 80 °C at a pressure of 1,013 hPa, and a monomer mixture comprising at least one isoolefin monomer, at least one multiolefin monomer and either no or at least one other co-polymerizable monomer in a mass ratio of monomer mixture to common aliphatic medium of from 40:60 to 99:1, b) polymerizing the monomer mixture within the reaction medium to form a rubber solution comprising a rubber polymer which is at least substantially dissolved in the medium comprising the common aliphatic medium and residual monomers of the monomer mixture; c) separating residual monomers of the monomer mixture from the rubber solution to form a separated rubber solution comprising the rubber and the common aliphatic medium, d) brominating the rubber in the separated rubber solution using a brominating agent which is at least partially regenerated by an oxidizing agent, wherein the oxidizing agent is selected from the group consisting of peroxides and peroxide forming substances. Also described is the use of brominated rubber obtained by the above method to obtain cured brominated rubbers and described the use of brominated rubber obtained in the above manner and cured brominated rubber as part of the tire.

EFFECT: technical result - reduction of energy use and consumption of raw materials, reducing the formation of undesired by-products.

21 cl, 1 dwg, 1 tbl, 4 ex