Process for preparing 3,5-dimethylphenol

Details Process for preparing 3,5-dimethylphenol Process for preparing 3,5-dimethylphenol

1998-04-27

1999-10-19

Kumar, Shailendra

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568799, 568377, C07C 3750

Patent

active

059691964

ABSTRACT:
For the preparation of 3,5-dimethylphenol by catalytic demethylation of isophorone in the gas phase in the presence of a metal or a metal alloy as catalyst, an isophorone-containing process stream is guided through reaction zones that contain said catalyst, whereby the reactivity of the catalyst varies in the reaction zones and the process stream between these reaction zones is thermostated in zones that do nor contain any catalyst, whereby the residual isophorone is greatly reduced, and the yield of 3,5-dimethylphenol is increased.

REFERENCES:
patent: 3641166 (1972-02-01), Ruhl et al.

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