Catalyst and method for catalytic off-gas cleaning in the dmt process
CA 2215539 A1 · Owner: Maschmeyer, Dietrich · Inventors: Maschmeyer, Dietrich; Neutzler, Ulrich; Sigg, Reinhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are a catalyst for cleaning a pressurized off-gas obtained after the oxidation of para-xylene with air in the liquid phase in the preparation of dimethyl terephthalate which comprises:, a) at least one oxide of titanium and, b) at least one elements form subgroup VIII of the Periodic Table of the Elements in the metal or oxide form, a process for preparing the catalyst by applying the component b) to a shaped article which comprises at least the component a), individually or in a mixture by dip impregnation or spray impregnation, and a method of cleaning a pressurized off-gas obtained after the oxidation of para-xylene in which the, pressurized oxygen-containing off-gas from the …
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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 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2019.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.