Process for producing polyphenylene ether, dispersing polyether

Details Process for producing polyphenylene ether, dispersing polyether Process for producing polyphenylene ether, dispersing polyether

1987-06-25

1990-01-23

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528212, 528214, 528486, 528490, 528495, 528496, 528499, C08G 6546

Patent

active

048959294

ABSTRACT:
A process for producing a polyphenylene ether is disclosed, comprising oxidatively polymerizing a phenol in an organic solvent in the presence of a catalyst for oxidative polymerization, finely dispersing the resulting polyphenylene ether containing the organic solvent in an aqueous dispersion medium containing an acid compound, and heating the aqueous dispersion to remove the solvent from the polyphenylene ether. The resulting polyphenylene ether has excellent powder properties and contains a reduced amount of a catalyst residue.

REFERENCES:
patent: 3630995 (1971-12-01), Modan
patent: 3783147 (1974-01-01), Calicchia et al.
patent: 4463164 (1984-07-01), Dalton et al.
patent: 4536567 (1985-08-01), Hambrecht et al.
patent: 4577010 (1986-03-01), Bottazini et al.
Condensed Chemical Dictionary, Eighth Edition, 1971, p. 588.

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