Process for the preparation of an aromatic polyether in the...

Details Process for the preparation of an aromatic polyether in the... Process for the preparation of an aromatic polyether in the...

C - Chemistry, Metallurgy

08

G

402/359

C08G 65/38 (2006.01) C08G 65/40 (2006.01)

Patent

CA 2022912

HOE 89/F 256 Abstract of the disclosure Process for the preparation of an aromatic polyether in the presence of finely divided condensation auxiliaries. The process for the preparation of an aromatic polyether by condensation of the reactants in the presence of carbonates of metals of Group I of the Periodic Table, as condensation auxiliaries, employs the metal carbonates sodium carbonate or sodium bicarbonate or mixtures thereof in the form of very finely ground salts. The fine particle size distribution of the carbonate allows a significant shortening of the reaction times and permits polyethers having a defined degree of condensa- tion to be reproducibly prepared.

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