Method for isolating solid polyarylene ester from its organic so

Details Method for isolating solid polyarylene ester from its organic so Method for isolating solid polyarylene ester from its organic so

1978-09-22

1980-05-13

Lee, Lester L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528128, 528173, 528176, 528179, 528190, 528191, 528194, C08G 6372, C08G 6374

Patent

active

042029651

ABSTRACT:
A method for isolating a polyarylene ester from a solution of the polyarylene ester in tetrahydrofuran and/or dioxane which is prepared by polycondensing a dihydric phenol compound and an aromatic dicarboxylic acid or its derivative, which comprises adding water to the solvent solution to form a water-containing solution, the weight ratio of water to the solvent solution being from 0.01 to 0.5, subjecting the resulting water-containing solution to an aging treatment, then precipitating substantially all of the polyarylene ester as a particulate solid from the water-containing solution, and separating the precipitated polyarylene ester from the water-containing solution.

REFERENCES:
patent: 3933713 (1976-01-01), Sokolov et al.

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