Process for the preparation of a catalyst for the hydration of olefins to give alcohols
CA 2062658 C · Owner: Huls Aktiengesellschaft · Inventors: Schlueter, Dietrich; Schubert, Klaus-Peter; Baumeister, Franz-Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the preparation of a catalyst from clay minerals and silica gel for the hydration of olefins having 2 to 3 C atoms to give the corresponding alcohols by means of phosphoric acid applied to the carrier, by two-stage acid treatment of this essentially montmorillonite-containing clay which, is contaminated with not more than 3% of accompanying materials, such as quartz, feldspar and mica and may, contain up to 0.5% of K2O, and optionally shaping and calcination between both acid treatments in which 20 to, 40 parts, based on the total dry substance of fine-, particled silica gel are added in a first stage to the clay which is acid-treated to 10-20% by …
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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 March 11, 1992 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2014.
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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.