Process for preparing aromatic polyethers

Details Process for preparing aromatic polyethers Process for preparing aromatic polyethers

1976-03-25

1977-11-01

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 50, C08G 6540

Patent

active

040565114

ABSTRACT:
Aromatic polyether ketones, polyether sulphones and etherketone/sulphone copolymers are made by heating a molar excess of a dihalogenobenzenoid compound having halogen atoms activated by ketone or sulphone groups at 250.degree. to 400.degree. C with dialkali metal salt of a bisphenol containing ketone or sulphone linking groups in the presence of certain diaryl sulphones to form a prepolymer and then adding an additional amount of a dialkali metal salt of a bisphenol containing ketone or sulphone linking groups and continuing polymerization.

REFERENCES:
patent: 3647751 (1972-03-01), Darsow et al.
patent: 3840580 (1974-10-01), Feasey et al.
patent: 3886120 (1975-05-01), Yagi et al.
patent: 3886121 (1975-05-01), Yagi et al.
patent: 3928295 (1975-12-01), Rose

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