Process for electrolytic production of alkali metal chlorate and auxiliary chemicals
CA 2060724 A1 · Owner: Carlsson, Arne · Inventors: Carlsson, Arne; Wanngaerd, Johan; Baeckstroem, Jan Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process to limit the content of impurities in the production of alkali metal chlorate, by integrating the production of chlorate with the production of chlorine and alkali metal hydroxide which auxiliary chemicals are used in the chlorate process. The alkali metal chlorate is produced by electrolysis of a purified electrolyte containing alkali metal chloride alkalization of the chlorate electrolyte obtained and precipitation of the chlorate formed by evaporation of the chlorate electrolyte. The very pure water separated in the crystallizer and alkali metal chloride is used in a membrane or diaphragm cell in the production of alkali metal hydroxide, which …
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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 February 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2014.
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Timeline
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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.