Process for direct methylation of phenol in liquid phase

Details Process for direct methylation of phenol in liquid phase Process for direct methylation of phenol in liquid phase

1975-08-25

1976-11-30

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260624C, C07C 3906

Patent

active

039949826

ABSTRACT:
Phenol is directly methylated in liquid phase while in the presence of gamma aluminas derived from Ziegler alcohol synthesis. The reaction is carried out continuously in liquid phase at temperatures of from about 300.degree. to 400.degree. C, liquid hourly space velocities of from about 1.0 to 15.0, pressures of from 500 to 1500 pounds per square inch gauge and a methylating agent to phenol mol ratio of from about .1 to about 3.0. High selectivity and yield of desired products such as ortho cresol, 2,6-xylenol and 2,3,6-trimethylphenol is obtained, while minimizing m,p cresol formation.

REFERENCES:
patent: 3290389 (1966-12-01), Hahn
patent: 3367981 (1968-02-01), Napolitano
patent: 3422156 (1971-11-01), Thoma
patent: 3426358 (1969-02-01), Schlichting et al.
patent: 3624163 (1971-11-01), Del Bel
patent: 3670030 (1972-06-01), Sparks
patent: 3707569 (1972-12-01), Van Sorge
patent: 3737466 (1973-06-01), Sharp et al.

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