Production of aromatic polyethers

Details Production of aromatic polyethers Production of aromatic polyethers

1978-03-03

1979-09-25

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528128, 528174, 528219, C08G 6540

Patent

active

041691784

ABSTRACT:
Aromatic polyethers are made by reacting i) an equimolar mixture of a bisphenol of formula ##STR1## in which Y is a direct link, --O--, --S--, --SO.sub.2 --, --CO-- or a divalent hydrocarbon radical, and an aromatic dihalo compound or ii) a halophenol, in which dihalo compound or halophenol the halogen atoms are activated by ortho or para --SO.sub.2 -- or --CO-- groups, with an alkali metal carbonate or bicarbonate. At least some of the halophenol and/or dihalo compound is fluorine containing. The amount of carbonate or bicarbonate is such that there is between 1 and 1-x/2 atoms of alkali metal per phenol group, where x is the fraction of activated halogen atoms that are fluorine.

REFERENCES:
patent: 3332909 (1967-07-01), Farnham et al.
patent: 3941748 (1976-03-01), King
patent: 4009149 (1977-02-01), King et al.
patent: 4010147 (1977-03-01), Rose
patent: 4036815 (1977-07-01), Feasey et al.

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