CONTINUOUS SYNTHESIS METHOD FOR A MODIFIED DIENE ELASTOMER, FACILITY FOR IMPLEMENTING SAME

摘要

A continuous method for synthesizing a diene includes modifying the diene elastomer in a functionalizing device by: a kinetic model according to which the ratio of the rate constants is greater than 1, and a flow represented by a residence time distribution in the functionalizing device that is expressed according to equations 1 or 3: (i) in a functionalizing device having at least one tubular continuous reactor or having at least one cascade of at least two stirred reactors, E 1  ( t ) = 1 2  ( P &pgr;&thetas; 1  t ) 1 2   - P  ( &thetas; 1 - t ) 2 4  &thetas; 1  t Eq   1 (ii) in a functionalizing device that is a combination of the device (i) and of a device having at least one continuous stirred reactor, having a residence time distribution characterized by the following equation: E 2  ( t ) =  ( - t &thetas; 2 ) &thetas; 2 Eq   2 the device (ii) having a residence time distribution characterized by the equation 3 below, which is the result of the convolution of equations 1 and 2: E 12  ( t ) = ∫ 0 t  E 1  ( t - T )  E 2  ( T )    T   E 12  ( t ) = ∫ 0 t  1 2  ( P &pgr;&thetas; 1  ( t - T ) ) 1 2   - P  ( &thetas; 1 - ( t - T ) ) 2 4  &thetas; 1  ( t - T )   ( - T &thetas; 2 ) &thetas; 2   T Eq   3