Process for the separation treatment of polymer from polymer sol

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

1982-02-16

1983-10-04

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

528501, C08J 928

Patent

active

044079893

ABSTRACT:
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 sufficient to maintain said solution in a liquid phase, sending said solution into a flashing tank kept at an inner surface temperature of 140.degree. C. or above and a pressure ranging from ordinary pressure to 5 kg/cm.sup.2 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 flashing tank.

REFERENCES:
patent: 3553156 (1971-01-01), Anolick et al.
patent: 3586089 (1971-06-01), Mato et al.
patent: 4129629 (1978-12-01), Gordon
patent: 4198265 (1980-04-01), Johnson

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