Process for the separation treatment of polymer from polymer...

Details Process for the separation treatment of polymer from polymer... Process for the separation treatment of polymer from polymer...

C - Chemistry, Metallurgy

08

J

402/398, 402/7

C08J 9/28 (2006.01) C08F 6/06 (2006.01)

Patent

CA 1211891

ABSTRACT OF THE DISCLOSURE 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 solu- tion 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 con- centrating 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 flashing tank.

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