Solution polymer recovery process

Details Solution polymer recovery process Solution polymer recovery process

1994-03-11

1995-04-18

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523343, 528499, 528500, C08C 206, C08F 612

Patent

active

054079748

ABSTRACT:
An improved process is provided for the recovery of a polymer from a solution thereof in a process wherein the polymer solution is contacted with hot water and steam to yield a slurry in water of polymer particles and a vapor stream comprising water vapor and the solvent, the slurry in water of polymer particles is passed to means to grossly separate the polymer particles and the water and the polymer particles are dried, wherein the water contains small particles of polymer and a portion thereof is mixed with the original polymer solution and the remaining portion is passed to the vessel wherein the polymer solution is first contacted with hot water and steam.

REFERENCES:
patent: 3131160 (1964-04-01), Alexander et al.
patent: 3160586 (1964-12-01), Duke
patent: 3590026 (1971-06-01), Carlson et al.
patent: 4546172 (1985-10-01), Kohyama et al.

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