NOVELTY - At least one educt fluid containing monomer species which are in contact with a solvent, is contacted with a catalyst and/or suspended catalyst in a mixing area, where the contacting is carried out in entrance area of an agitated reactor assembly (01) comprising at least two cells (14) with unit for agitation, or before delivering educt fluid to agitated reactor assembly. The mixture of educt fluid and catalyst solution is conveyed through cells of agitated reactor assembly to generate polymeric coupling product.    USE - Production of polymeric coupling products used for producing printed electronic component, light-emitting diode e.g. organic light-emitting diode, organic field-effect transistor, organic solar cell and semiconductor (all claimed).    ADVANTAGE - The method enables economical production of polymeric coupling product having increased molecular weight and low polydispersity index, with reduced energy consumption.    DETAILED DESCRIPTION - At least one educt fluid containing monomer species which are in contact with a solvent, is contacted with a catalyst and/or suspended catalyst in a mixing area, where the contacting is carried out in entrance area of an agitated reactor assembly comprising at least two cells with unit for agitation, or before delivering educt fluid to agitated reactor assembly. The mixture of educt fluid and catalyst solution is conveyed through cells of agitated reactor assembly to generate polymeric coupling product, where the unit for agitation within cells do not require a mechanical connection of agitating mechanism with cell to drive mechanism which is outside the cell. The polymeric coupling product is discharged out of the exit lines of the reactor assembly.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the apparatus for continuous conductance of coupling reaction in reactor assembly.    Reactor assembly (01)    Cell (14)    Mixing element (15)    Collecting tank for product fluid (16)    Radiation source (22)