Method for producing phosphonium phenolates
AssigneeBayer Aktiengesellschaft
InventorsAnnett König, Lothar Bunzel, Uwe Hucks
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Abstract
A process for preparing phosphonium phenolate is disclosed. The process entails a reaction of phosphonium halide with phenol in an aqueous alkaline solution at a temperature of 0 to 55° C. The molar ratio of phenol to phosphonium halide is between 2:1 to 10:1 and the pH of the solution is 9.5 to 11. An optional embodiment entails carrying out the reaction in the further presence of alcohol.
Claims5
A process for preparing phosphonium phenolate comprising a reaction of phosphonium halide with phenol in a medium consisting of aqueous alkaline solution at a temperature of 0 to 55° C., wherein molar ratio of phenol to phosphonium halide is between 2:1 to 10:1 and wherein pH is 9.5 to 11.
Dependencies are inferred from the claim text.