Process for the production of tertiary butyl phenols
AssigneeCouncil of Scientific and Industrial Research
InventorsPraveen Kumar Khatri, Suman Lata Jain, Indrajit Kumar Ghosh
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved process for the selective alkylation of phenols by reacting it with methyl tertiary butyl ether (MTBE) using polymer supported carbon composite acidic catalyst under mild to moderate conditions at atmospheric pressure. The process is economically viable since the catalyst regenerated after the initial reaction on further use gives the para tertiary butyl phenol (PTBP) in high yield.
Claims11
An improved process for production of tertiary butyl phenols by selective alkylation of phenols by reacting said phenols with methyl tertiary butyl ether (MTBE) in the molar ratio 1:1 to 1:5 using sulfonic acid functionalized polymer supported carbon composite solid acid catalyst in 0.5-10 wt % with respect to total weight of phenol and MTBE, under the temperature in the range of 100-160° C. at atmospheric pressure for 1 to 5 h, provided more than 99% conversion with 70-80% selectivity for the p-tert. butyl phenol with the facile recovery and recycling of the recovered catalyst for at least seven runs.
Dependencies are inferred from the claim text.