One step synthesis of methyl t-butyl ether from t-butanol using fluorophosphoric acid-modified clay catalysts
CA 2079416 A1 · Owner: Sanderson, John R. · Inventors: Sanderson, John R.; Knifton, John F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ONE STEP SYNTHESIS OF METHYL t-BUTYL ETHER FROM t-BUTANOL USING FLUOROPHOSPHORIC ACID-MODIFIED MONTMORILLONITE CLAYS (D#81,157-F), ABSTRACT OF THE DISCLOSURE A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement of accomplishing the reaction which comprises:, a. Using a catalyst comprising a montmorillonite clay treated with a fluorophosphoric acid, b. continuously contacting said t-butanol and methanol in a molar amount of about 0.1 to 10 moles of methanol per mole of t-butanol with said catalyst at a temperature of about 20°C to about 250°C and a pressure of about atmospheric to about 1000 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2014.
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