Process for purifying aldehyde-containing ketones
CA 1106408 A · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Yasuhara, Mitsuki; Miki, Hisaya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a process for purifying an aldehyde-containing ketone, which comprises catalytically hydrogenating a crude ketone containing minor amounts of aliphatic aldehydes at a temperature of from room temperature to about 100°C and a pressure of from atmospheric pressure to 10 kg/cm2.G in, the presence of hydrogen, a palladium-containing catalyst and about 0.4 to, about 15% by weight, based on the weight of the crude ketone of an active, hydrogen-containing compound having a higher boiling point than the ketone which is selected from the group consisting of water aliphatic alcohols, containing 3 to 7 carbon atoms alicyclic alcohols containing 5 to 8 carbon atoms, aliphatic …
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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
- Granted August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.