Process for producing polypropylene from c3 olefins selectively produced in a fluid catalytic cracking process
CA 2400524 A1 · Owner: Wachter, William A. · Inventors: Henry, B. Erik; Wachter, William A.; Ladwig, Paul K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt.% of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500 ~C to 650 ~C and a hydrocarbon partial pressure from about 10 to 40 psia.
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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 March 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2023.
- 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.