Process for production of polyphenylene oxides

Abstract

Abstract POLYPHENYLENE OXIDE IS PRODUCED BY REACTING OXYGEN WITH A PHENOL COMPOUND REPRESENTED BY THE FOLLOWING FORMULA: 2-R1,3-R2,4-R3,5-R4,6-R5-PHENOL WHEREIN R1, R2, R3, R4 AND R5 INDEPENDENTLY REPRESENT HYDROGEN ATOMS, HALOGEN ATOMS, HYDROCARBON GROUPS, SUBSTITUTED HYDROCARBON GROUPS, CYANO GROUPS, ALKOXY GROUPS, PHENOXY GROUPS, NITRO GROUPS OR MONO-OR DI-ALKYL SUBSTITUTED AMINO GROUPS, AND AT LEAST ONE OF THE THE R1, R2, R3, R4 AND R5 IS A HYDROGEN ATOM AND FURTHER AT LEAST ONE THEREOF IS OTHER THAN A HYDROGEN ATOM IN THE PRESENCE OF (1) AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF MANGANESE COMPOUNDS, COBALT COMPOUNDS AND COPPER COMPOUNDS AND (2) AN ALCOHOLATE AND/OR PHENOLATE OF AN ALKALI METAL WITH OR WITHOUT AN ORGANIC REACTION MEDIUM IN A STATE SUBSTANTIALLY FREE FROM WATER, AND CONTACTING THE RESULTING REACTION MIXTURE WITH A POOR SOLVENT TO THE POLYPHENYLENE OXIDE, THEREBY TO RECOVER THE DESIRED POLYPHENYLENE OXIDE.

Inventors

• 👤 Seizo Nakashio
• 👤 Isamu Nakagawa

Bibliographic Details