An isoparaffin-olefin alkylation catalyst comprising hf, sulfone and water
CA 2117530 C · Owner: Uop Llc · Inventors: Del Rossi, Kenneth J.; Child, Jonathan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a process for alkylation of an isoparaffin with an olefin in the presence of acid catalyst composition comprising from 50 to 80 weight percent hydrofluoric acid from 20 to 50 weight percent sulfolane and from 0.5 to, 10 weight percent water. The addition of the water decreases the corrosivity of the mixture of hydrofluoric acid and sulfolane.
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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 23, 1993 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2015.
- 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.