Process for preparing alkali metal salts of hydroxyaromatic comp

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568716, C07C 3916

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044928068

ABSTRACT:
Anhydrous alkali metal (especially sodium) salts of hydroxyaromatic compounds, particularly bisphenols such as bisphenol A, are prepared by forming a solution of the hydroxyaromatic compound in a solvent mixture comprising a relatively high boiling non-polar organic liquid such as toluene or o-dichlorobenzene and an alkanol containing up to about 4 carbon atoms, preferably methanol; contacting said solution with an aqueous solution of a substantially stoichiometric amount of alkali metal hydroxide; and removing substantially all volatile materials from the reaction mixture by evaporation. The product thus obtained is a slurry of the anhydrous alkali metal salt in the non-polar liquid.

REFERENCES:
patent: 3554265 (1971-01-01), Milan
patent: 3960968 (1976-06-01), Vernaleken et al.
patent: 3974084 (1976-08-01), Pietzch et al.
patent: 4257953 (1981-03-01), Williams
patent: 4302616 (1981-11-01), Williams
patent: 4410736 (1983-10-01), Dellacoletta

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