Polymer recovery process

Details Polymer recovery process Polymer recovery process

C - Chemistry, Metallurgy

08

J

402/181, 402/187

C08J 3/14 (2006.01) C08G 63/89 (2006.01)

Patent

CA 1148691

ABSTRACT OF THE DISCLOSURE Polymer product, such as a polyester resin, is re- covered in finely divided form from a polymer product/ solvent solution by the addition of the solution to a hot, non-boiling water phase with non-shearing agitation of the resulting composition of the water, polymer prod- uct, and solvent under conditions which give rise to turbulence in the composition. The solvent, which has a lower boiling point than the temperature at which the hot water is maintained, boils off from the polymer product, solvent and water composition and leaves the d???red, finely divided, polymer product admixed in the water phase. The product can be recovered by fil- tration or other suitable separation technique.

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