SEPARATION OF POLYMER SUSPENSIONS Russian patent published in 2012 - IPC C08F6/00 C08F10/10 C08F10/14 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing elastomers or elastomer compositions, a system for production thereof and an elastomer composition obtained using said method. The method involves polymerisation of one or more C₄-C₇ isoolefins in the presence of a diluent which contains one or more fluorohydrocarbons in a reactor operating under suspension polymerisation conditions; extracting the output product of the reactor which contains a polymer product, unreacted monomer and diluent from the reactor; heating the suspension to temperature higher than the temperature of the unstable suspension by a value ranging from 1°C to about 50°C; extrusion of the output product of the reactor to separate at least a portion of the diluent and unreacted monomer from the polymer product; and recirculating the separated diluent and unreacted monomer into the reactor.

EFFECT: improved process of separating suspensions when producing elastomers and compositions thereof by using diluents or mixtures of diluents.

22 cl, 1 tbl, 4 dwg