The present invention relates to a reaction assembly for continuous manufacture of product. Batch wise operations are not suitable for all kind of products. Particularly batch wise operations are problematic where the product to be manufactured needs reaction temperature higher than boiling points of its reactants and solvents. Vaporization of reactants and solvents drastically. reduces the reaction rate and sometimes it may stop the reaction completely. This results in incomplete reaction affecting badly the product yield.» Present invention provides a reaction assembly for continuous manufacture of desired product at the temperature higher than its reactants and solvents boiling points. This assembly is based on thermosiphon effect and operationally simple. It gives good yield of desired product. Further it provides separate recovery of low boiling point component (s).
