Polymeric supported extractants for the removal of metal values and organic compounds from aqueous solutions
CA 1196621 A · Owner: American Cyanamid Company · Inventors: Savides, Christos; Chaudhuri, Ajit K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Polymeric supported extractants their use and, preparation are disclosed. Said extractants comprise macroreticular resins containing phosphorus based extractant compounds encapsulated therein. The extractants are useful for the extraction of mineral values and organic compounds from aqueous solutions and may be prepared by the suspension polymerization of a monovinylidine compound and a polyvinylidine compound in a solution of the phosphorusbased extractant and a short chain (C4 to C10) alkanol.
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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 November 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2002.
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Timeline
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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.