Process for the separation treatment of polymer from polymer solution

Abstract From the Canadian patent

A process for the separation treatment of a polymer solution characterized by, in separating and recovering polymer and polymerization solvent by flashing a polymer solution, heating said polymer solution under an elevated pressure enough to maintain said solution in a liquid phase, sending said solution into a flashing tank kept at an inner surface temperature of 140C or above and a pressure ranging from ordinary pressure to 5 kg/cm2 G, flashing said solution to evaporate and separate the solvent, thereby concentrating said solution so that concentration of the polymer in said solution becomes 80% by weight or more and recovering the concentrated solution from the bottom part of the …