Use of a fluoro-aromatic desorbent in a process for adsorptive separation of para-alkylaromatic hydrocarbons
CA 1322176 C · Owner: Neuzil, Richard William · Inventors: Antos, George John; Neuzil, Richard William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The para-isomer of a dialkyl-aromatic hydrocarbon is separated from a mixture with at least one other isomer of the hydrocarbon by contacting the mixture with a crystalline aluminosilicate adsorbent containing barium and potassium ions at exchangeable cation sites in a mole ratio corresponding to a BaO to K20 ratio of 0.6:1 to 1.2:1 at adsorption conditions selected to effect adsorption of said para-isomer and thereafter contacting the para-isomer containing adsorbent with a desorbent material selected from monofluroaromatics, difluoroaromatics or mixtures thereof at desorption conditions selected to effect recovery of said para-isomers.
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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 September 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 14, 2010.
- 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
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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.