Process for the recovery of phenol from a reaction mixture resulting from the acid cleavage of cumene hydroperoxide
CA 1184941 A · Owner: Uop Inc. · Inventors: Pujado, Peter R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the recovery of phenol from a reaction mixture resulting from the acid cleavage of cumene hydroperoxide is disclosed. Neutralization of the acidic reaction mixture is effected with sodium phenate -- a product derived from the subsequent recovery of phenol and recycled to the neutralization process. The resulting mixture is further treated to effect an improved separation of the salt of neutralization therefrom.
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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 April 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2002.
- 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
Timeline From CIPO dates
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.