One-step synthesis of methyl t-butyl ether from t-butanal using pentasil zeolite catalysts
CA 2128907 A1 · Owner: Texaco Petrochemical Inc. · Inventors: Knifton, John F.; Dai, Pei-Shing E.
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 PENTASIL ZEOLITE CATALYSTS (D#81,270 -F), ABSTRACT OF THE DISCLOSURE Disclosed is a process for preparing alkyl tertiary alkyl ethers in one step which comprises reacting tert-butanol and a C1-C4 primary alcohol in the presence of a catalyst consisting essentially of a pentasil zeolite having a silica/alumina ratio of 50-150, optionally with a binder at a temperature of about 80° to 200°C and atmospheric pressure to about 1000 psig, wherein when the temperature is in the operating range above 140°C, the product comprises a two-phase mix of a MTBE or ETBE and isobutylene product-rich phase and a heavier aqueous primary …
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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 July 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2016.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.