Liquid-phase preparation of delta-keto carboxylic acid esters utilizing liquid-phase insoluble catalyst
CA 1212382 A · Owner: Koppers Company, Inc. · Inventors: Greco, Nicholas P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A process is disclosed for making a delta-keto carboxylic acid ester by the addition reaction of a ketone and an acrylic acid ester in the presence ? of a catalyst provided by a mixture of a primary amine component and a waterpromoted catalytic material component. The water-promoted catalytic material component, which is substantially or entirely insoluble in the reaction medium, is selected from the group of materials consisting of an alkali halfsalt of phthalic acid, an aluminum hydrosilicate mineral a silica-alumina, molecular-sieve zeolite a silica-free alumina and a sulfonated perfluorinated resin. The process is particularly suitable for making methyl 4-oxocaproate 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
- Granted October 7, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 2003.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.