Method of inhibiting corrosion in hydrocarbon systems due to presence of propionic acid
CA 1261135 A · Owner: Betzdearborn Inc. · Inventors: Edmondson, James G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to the use of a reaction product of an alkynediol and a polyalkylene polyamine to control corrosion of metallic surfaces in contact with a substantially anhydrous elevated temperature mixture of a hydrocarbon and propionic acid. The method is particularly useful in controlling the corrosion of overheads in a crude unit of a refinery where problems of this nature are prevalent.
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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 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.