Method of washing organic solvent solution of polycarbonate

Details Method of washing organic solvent solution of polycarbonate Method of washing organic solvent solution of polycarbonate

1979-04-11

1982-04-06

Daus, Donald G.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528487, 528490, 260463, 524464, 524611, C07C 6802

Patent

active

043235190

ABSTRACT:
A crude organic solvent solution of a polycarbonate containing an impurity is washed with an aqueous washing liquid by forming a water in oil dispersed phase by mixing the crude solution of the polycarbonate with a small amount of aqueous washing liquid in order to form the water in oil dispersed phase and then causing a phase inversion from the water in oil dispersed phase into an oil in water dispersed phase, and then, separating the organic solvent solution of the polycarbonate from the aqueous washing liquid.

REFERENCES:
patent: 3160606 (1964-12-01), Dietrich et al.
patent: 3663727 (1972-05-01), Yamamoto et al.
patent: 3668181 (1972-06-01), Oxeurider
patent: 4016190 (1977-04-01), Bockmann et al.
Z. Dobkowski et al., Chemical Abstracts: 85: 193320r (1976) Polycarbonates.

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