Process for the production of ethanol
CA 1233484 A · Owner: Mckee (Davy) (London) Limited · Inventors: Harris, Norman; Bradley, Michael W.; Turner, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethanol is produced by carbonylation of methanol by reaction with carbon monoxide in the presence of a carbonylation catalyst to form acetic acid which is then converted to an acetate ester followed by hydrogenolysis of the acetate ester formed to give ethanol or a mixture of ethanol and another alcohol which can be separated by distillation. Preferably the other alcohol or part of the ethanol recovered from the hydrogenolysis step is recycled for further esterification. Carbonylation can be effectedusing a CO/H2 mixture and hydrogenolysis can similarly be conducted in the presence of carbon monoxide leading to the, possibility of circulating gas between the carbonylation and hydrogenolysis …
Read the whole patent
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
- Granted March 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.