Process for obtaining an organic acid from an organic acid ammonium salt, an organic acid amide, or an alkylamine organic acid complex
CA 2440987 A1 · Owner: Cockrem, Michael Charles Milner · Inventors: Kovacs, Istvan; Cockrem, Michael Charles Milner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the recovery of an organic acid such as a heat stable lactic , acid, from a feedstream (1) comprising at least one of an organic acid amide an organic acid ammonium salt or an alkylamine-organic acid complex. The feedstream is mixed with at least one azeotroping agent (2) and the mixture fed to a fractional distillation apparatus or reactor (3). The azeotroping agent is a hydrocarbon capable of forming at least one azeotrope with the organic acid that is produced by the thermal decomposition of the amide ammonium salt, or complex in the feedstream. The mixture is heated to produce vapor stream (11) that comprises an azeotrope. The vapor stream can be condensed in …
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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 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2024.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.